#next.js

Join us as we journey from React frontend development to fullstack development with Next.js. During this workshop, we'll follow along the official Next.js Learn tutorial with Eric Burel, professional trainer and author of NextPatterns.dev. Together, we'll set up a Next.js website and explore its server-side features to build performant apps.

Frontend issues that affect your users are often triggered by backend problems. In this workshop, you’ll learn how to identify issues causing slow web pages and poor Core Web Vitals using tracing.
Then, try it for yourself by setting up Sentry in a ready-made Next.js project to discover performance issues including slow database queries in an interactive pair-programming session.
You’ll leave the workshop being able to:- Find backend issues that might be slowing down your frontend apps- Setup tracing with Sentry in a Next.js project- Debug and fix poor performance issues using tracing
This will be a live 2-hour event where you’ll have the opportunity to code along with us and ask us questions.

Knowledge of AI tooling is critical for future-proofing the careers of React developers, and the Vercel suite of AI tools is an approachable on-ramp. In this course, we’ll take a closer look at the Vercel AI SDK and how this can help React developers build streaming interfaces with JavaScript and Next.js. We’ll also incorporate additional 3rd party APIs to build and deploy a music visualization app.
Topics:- Creating a React Project with Next.js- Choosing a LLM- Customizing Streaming Interfaces- Building Routes- Creating and Generating Components - Using Hooks (useChat, useCompletion, useActions, etc)

Choosing the right Next.js agency is one of the highest-leverage decisions a SaaS founder or enterprise engineering lead can make. Regardless of the type of project you plan to undertake an agency—be it a small startup, mid-market SaaS, or a large enterprise—Next.js is your sensible choice for the frontend in 2026.This guide evaluates 15 Next.js development agencies across Europe — covering technical depth, verified CMS partnerships, Vercel platform experience, and documented client outcomes — so you can identify the right Next.js developers for your specific project without relying on rankings that prioritise brand size over delivery evidence.According to the State of JavaScript 2025 survey (13,000+ respondents, sponsored by Google Chrome and JetBrains), Next.js is used by 59% of JavaScript developers, making it the most adopted React meta-framework by a significant margin. Not every agency that lists Next.js development services on their website has built production-grade SaaS platforms with it. This guide focuses on European Next.js agencies with documented delivery at scale.Many well-known companies use Next.js for various purposes, e.g., Nike, Stripe, TikTok, Uber, Wayfair, Notion, and Apple. Thanks to its performance, scalability, and developer experience Next.js works well for enterprise websites, SaaS dashboards, and high-traffic landing pages. It’s also popular for e-commerce platforms, marketing sites, and customer-facing web apps.TL;DR — Top Next.js Agencies in Europe at a GlanceBest Next.js agency for headless CMS migrations: FocusReactive (London/Warsaw) — Sanity certified, 35-domain multilingual delivery for EasyPark, clients all over the worldBest for performance engineering and App Router migrations: Blazity (Warsaw) —  70% LCP improvement for CookUnityBest for headless commerce and Shopify Plus: Naturaily (Wrocław); Shopify Plus certifiedBest for large enterprise digital transformation: Dept Agency; Contentful partnerBest for net-new SaaS product builds: Netguru or Boldare; full design-to-engineering lifecycle, strong Clutch track recordBest for custom B2B/B2C commerce platforms: Rigby; Medusa.js specialists for marketplace and multi-tenant buildsBest for design-led SMB and startup builds: Halo Lab; competitive rates, high design qualityKey buying signals to verify before committing to any Next.js development agency: App Router in production (not Pages Router), named Vercel partner status, at least one case study with a measured outcome, and a defined post-launch SLA.Who This Guide Is ForThis guide is written for a single reader: a technical decision-maker — CTO, VP of Engineering, or hands-on founder — at a mid-market SaaS company or enterprise digital team who is evaluating a Next.js development agency for one of the following Next.js projects:Migrating a legacy platform (WordPress, Drupal, AEM) to a headless Next.js architectureBuilding a new SaaS frontend or Next.js website from scratch on the App RouterScaling an existing Next.js codebase that has outgrown the original team's capacityIf you are a marketing director selecting a Webflow agency, or an enterprise procurement team seeking a 500-person outsourcing firm, this selection guide is not the right resource. The Next.js agencies listed here are specialist software engineering teams, not general digital agencies, and the evaluation criteria reflect that difference.How to Evaluate a Next.js Development Agency: 8 CriteriaThese criteria should be applied before reviewing any Next.js agency's portfolio. Outline your project needs for each criterion, then score the agencies based on your requirements — not against each other in the abstract.1. Next.js App Router and React Server Component FluencyAny Next.js agency doing serious work in 2026 should be building on the App Router by default — it is the current production standard and the only model Vercel is actively developing new features for. An agency still defaulting to the Pages Router for new projects, or that cannot clearly explain the Client/Server Component boundary, is working on a deprecated paradigm.Ask: Are your current production projects on the App Router or Pages Router? How do you decide which components are Server Components versus Client Components?Red flag: Defaults to "use client" on most components, or describes App Router as "still evaluating."2. Next.js Rendering Strategy DepthA capable Next.js agency should be able to tell you exactly which rendering strategy — SSG, ISR, SSR, or RSC — applies to each layer of your application and why, including the caching and cost implications of each choice. If the answer is "we use SSR for everything," that is not a strategy, it is a default.Ask: How do you decide between SSG, ISR, and dynamic rendering in an App Router project? How do you handle cache invalidation when CMS content updates?Red flag: Cannot explain the difference between route-level and component-level caching in the App Router.3. Vercel Platform DepthProduction Next.js deployment on Vercel goes well beyond connecting a GitHub repo — it requires managing edge middleware, environment variable scoping, preview deployments, build cost optimisation, and observability tooling. An agency that has only used Vercel's free tier has not encountered the challenges enterprise deployments surface.Ask: Have you managed Vercel enterprise accounts with multiple deployment targets? Have you configured Edge Middleware for geo-routing or A/B testing?Red flag: Cannot describe how they manage Vercel build costs or have never used Speed Insights for production diagnostics.4. Headless CMS Integration as Part of Next.js Development ServicesDeep CMS integration means designing the content model, configuring draft mode for live preview with React Server Components, and ensuring editors can operate independently after handover — not just connecting the API and fetching data. Ask for a certified partnership and a concrete content modelling example, not a list of supported platforms.Ask: Are you a certified partner of the CMS we are considering? How do you implement draft mode with Server Components for live preview?Red flag: Treats CMS setup as a configuration task with no content modelling methodology to show.5. SEO Continuity and Core Web Vitals MethodologyFor platform migrations, organic search equity is a business asset that can be destroyed by poor redirect handling or metadata loss. A qualified Next.js agency treats Core Web Vitals and URL continuity as engineering deliverables from sprint one, not as post-launch cleanup.Ask: How do you handle URL mapping and redirect implementation during a migration? Can you show pre/post Core Web Vitals benchmarks from a previous project?Red flag: Redirects are handled at the end of the project, or the agency cannot produce crawl comparisons from past migrations.6. TypeScript and Code Quality: What to Expect from Senior Next.js DevelopersThe codebase a Next.js agency delivers will be maintained by your internal team or a future agency — TypeScript by default, automated tests, and clear documentation are baseline requirements, not premium extras.Ask: Is TypeScript the default on all projects? What testing framework and coverage standards do your Next.js developers apply?Red flag: Delivers JavaScript-only codebases or has no automated testing in the handover.
ask the programmer meme7. Post-Launch Support and SLA StructureThe first 90 days after launch consistently surface redirect gaps, content model edge cases, and performance regressions. A Next.js agency without a formal post-launch support period and documented SLAs will deprioritise incidents because those hours are unscoped and unbillable.Ask: What are your SLAs for critical production bugs in the first 90 days? Is a retainer model available for ongoing work?Red flag: No formal post-launch support structure beyond "reach out if something breaks."8. Enterprise Delivery EvidencePortfolio logos are not delivery evidence — ask for case studies that name a client, describe the integration complexity, and cite a measurable outcome (Core Web Vitals score, traffic change, time-to-market). An agency that cannot provide this has not delivered at enterprise scale.Ask: Can you share a Next.js App Router case study with similar content volume or language count to our project, including the measured outcome?Red flag: Case studies show design screenshots and describe outcomes as "improved performance" without figures.How Next.js Agencies Were Ranked: MethodologyEvery agency in this list was evaluated against five factors. No agency paid for inclusion. Agencies ranked higher when they demonstrated App Router adoption in production (verified via case studies, public repositories, or technical blog content) and could show documented delivery at enterprise content or traffic scale. Agencies whose public case studies predate the App Router era, or whose documentation suggests primary reliance on the Pages Router, rank lower regardless of brand recognition or team size.FactorWeightSignal UsedApp Router and RSC adoption in productionHighVerified via case studies, public repos, or technical blog postsVercel platform depthHighOfficial partner status, enterprise account evidence, edge middleware usageSEO and Core Web Vitals track recordHighNamed platform certifications; documented content modelling approachHeadless CMS certification and methodologyHighPre/post launch metrics; migration case studies; Metadata API usageEnterprise delivery evidenceMediumNamed clients, measurable outcomes, team scale documentationAgency Comparison MatrixThe matrix below uses factual indicators rather than qualitative labels. Every client's needs differ, but here are the basic agency metrics for you to check.
AgencyVercel PartnerCMS Certifications (verified)Named Client with MetricPrimary FitEst. HourlyFocusReactiveYesSanity, Storyblok, Contentful, PayloadEasyPark (35 domains, top 1–5 rankings in 14 countries)Headless CMS sites, SEO migrations$75–125The Software HouseUnverifiedUnverifiedUnverifiedEnterprise web apps, team augmentation$60–100Dept AgencyUnverifiedContentful (self-reported)Unverified specific metricsGlobal enterprise digital products$100–150NaturailyUnverifiedShopify Plus (certified), Storyblok, Sanity (self-reported)Best IT (Jamstack migration, documented)Headless commerce, performance replatforms$50–99NeoskopUnverifiedAdobe Experience Cloud (self-reported)UnverifiedDACH SaaS and enterprise$80–120NearFormUnverifiedNone verifiedCondé Nast International, Everstream Analytics (self-reported)Enterprise full-stack, Node.js + React$80–120NetguruUnverifiedUnverifiedING, Volkswagen Financial (self-reported)SaaS product development$75–125BoldareUnverifiedUnverifiedUnverifiedSaaS product squads, agile builds$60–100BlazityYes (Silver)Sanity, Hygraph, Contentful (self-reported)CookUnity (70% LCP), Planday (4x dev velocity)Performance engineering, App Router migrations$70–110Makers' DenUnverifiedStoryblok (self-reported)UnverifiedReact e-commerce, composable commerce$65–105BrainhubUnverifiedUnverifiedUnverifiedStaff augmentation, SaaS frontends$70–120LemonhiveUnverifiedSanity, Storyblok, Payload (self-reported)UnverifiedHeadless for agencies and brands$80–13010CloudsUnverifiedUnverifiedPinterest (self-reported)AI-powered apps, fintech platforms$55–95RigbyUnverifiedUnverifiedUnverifiedB2B/B2C e-commerce platforms$60–100Halo LabUnverifiedUnverifiedCorel, Oppo (self-reported)UI/UX, SMB web apps$40–80
The 15 Next.js Development Agencies in EuropeEach Next.js agency entry follows a consistent schema: location and headcount, verified partnerships, documented client outcomes, primary project fit, tech stack, hourly rate estimate, and time zone. Where information is drawn from self-reported sources, this is stated.1. FocusReactive — Next.js Agency — London / Amsterdam / WarsawHourly rate: $75–125
Time zone: GMT/BST (London), CET/CEST (Amsterdam, Warsaw) — UTC to UTC+2FocusReactive operates within the modern React and headless CMS stack — Next.js App Router, Vercel, Sanity, Storyblok, Payload, and Contentful — with no generalist digital agency work alongside it. Their Next.js development services focus on two primary engagement types: headless CMS migrations from legacy platforms (WordPress, Drupal) and new multilingual Next.js website builds for SaaS companies that require editorial independence after launch.Documented delivery: The EasyPark project consolidated 20+ domains into a single Next.js and Storyblok platform supporting 35 languages across 14 countries, with a content system of 6,998 stories, 1,131 assets, and 125 component blocks managed post-launch by a three-person marketing team. The platform achieved top 1–5 search rankings in all active regions (source: FocusReactive case study, verified against EasyPark's public presence). Additional documented clients include TrafficGuard (Sanity-based composable marketing site, SEC-compliant) and EmailOctopus (WordPress to Payload CMS migration with Next.js App Router).Additional context: The team co-organises React Summit, JSNation, and related JavaScript conferences, which reflects a consistent investment in the React ecosystem beyond client delivery. FocusReactive also publishes technical comparisons of headless CMS platforms (Sanity vs Storyblok, Contentful vs Payload) as official partners of both platforms — an indicator of genuine multi-platform depth rather than single-vendor alignment.Best fit: SaaS companies requiring multi-market, multilingual headless CMS migrations; marketing teams that need editor independence after handover; enterprises migrating from WordPress or AEM to headless architecture.Stack: Next.js (App Router), Vercel, Sanity, Storyblok, Contentful, Payload CMS, TypeScript, Tailwind CSS, Shopify Hydrogen2. The Software House — Next.js Development Agency — Gliwice / WarsawHourly rate: $60–100
Time zone: CET/CEST (UTC+1/+2)Software House is a Poland-based custom software house with 12+ years of delivery history across web applications, cloud migrations, and modern frontend development. Their scale (80+ React and Next.js engineers by self-report) makes them a viable option for enterprises that need team extension alongside backend modernisation, rather than a pure frontend specialist. Clutch rating 4.9/5 across 60+ reviews (self-reported, unverified at time of writing).Documented delivery: No independently verified case studies with named clients and specific performance metrics were found at time of writing. Clutch reviews cite enterprise clients in manufacturing, fintech, and SaaS, but specific outcomes (Core Web Vitals scores, traffic changes, migration timelines) are not published.Best fit: Enterprise teams needing Next.js development alongside concurrent backend or cloud modernisation work; companies that require a larger augmentation team than boutique agencies can provide.Stack: Next.js, React, Node.js, TypeScript, AWS, .NET, microservices3. Dept — Next.js Website Agency — Amsterdam / Berlin / CopenhagenHourly rate: $100–150Time zone: CET/CEST (UTC+1/+2) for EU offices; global coverage across 30+ officesDept agency is one of the largest independent digital agencies in Europe, regularly cited in Gartner rankings for digital experience services. Their Next.js delivery happens within larger brand-driven digital transformation engagements rather than as a standalone React practice. The agency suits enterprise organisations that need design, strategy, and engineering in a single contract, and where Next.js is the chosen frontend framework within a broader platform rebuild.Documented delivery: Dept has documented work with global brands including Google, Audi, and Patagonia (self-reported). Specific Next.js App Router case studies with performance metrics were not found at time of writing.Best fit: Global enterprise brands running multi-region digital transformation programmes where Next.js is one component of a broader platform strategy.Stack: Next.js, React, Contentful, commercetools, Vercel4. Naturaily — Next.js Agency — Wrocław, PolandHourly rate: $50–99
Time zone: CET/CEST (UTC+1/+2)Naturaily is a Wrocław-based web development agency founded in 2012, specialising in headless commerce and content sites using Next.js, Jamstack architecture, and composable CMS platforms. Their documented project types include Shopify Plus headless storefronts, Next.js marketing site migrations from monolithic CMS platforms, and e-commerce builds requiring SEO and performance optimisation. Their published blog content on Next.js, headless CMS selection, and ISR strategy reflects active technical investment in the stack.Documented delivery: The Best IT case study documents a migration from a monolithic site to a Jamstack architecture using Next.js and Storyblok, including the scope of content consolidation and performance improvements (case study published on naturaily.com, specific metrics cited within). The n8n project involved building a scalable web solution for automated, API-rich content creation at high page volumes, with documented improvement to product visibility. Additional named clients include FGS Global and Urban (self-reported, partial detail).Best fit: Mid-market e-commerce brands and SaaS companies needing headless Shopify Plus builds or Next.js CMS-driven marketing sites with a performance and SEO focus.Stack: Next.js, React, Shopify Hydrogen, Storyblok, Sanity, Strapi, Node.js, Vercel5. Neoskop — Next.js Development Agency — Mannheim, GermanyHourly rate: $80–120
Time zone: CET/CEST (UTC+1/+2)Neoskop is a German-based web development company focused on SaaS and enterprise clients in the DACH region. Neoskop combines product strategy with software engineering delivery, making them a fit for DACH-market companies that value local market proximity and German data compliance standards alongside Next.js delivery. Their positioning emphasises mid-market SaaS rather than large enterprise transformation.Documented delivery: No independently verified case studies with named clients and performance metrics were found at time of writing. Self-reported client roster includes technology and B2B SaaS companies in Germany and Austria.Best fit: DACH-region SaaS companies that prioritise local agency relationship, German compliance standards, and product-level thinking alongside frontend delivery.Stack: Next.js, React, TypeScript, headless CMS platforms6. NearForm — Next.js Development Agency — Waterford, IrelandHourly rate: $80–120
Time zone: GMT/IST (UTC+0/+1) — strong overlap with UK and Western EuropeNearForm is an Irish enterprise software engineering company founded in 2011, with a primary specialisation in Node.js, React, and open-source JavaScript infrastructure. They are one of the most active contributors to the Node.js runtime globally and created Fastify — the high-performance Node.js web framework now widely used in enterprise backends. Their React and Next.js capability is deployed within large-scale enterprise digital transformation engagements, typically alongside backend modernisation, AI engineering, or data platform work rather than as standalone frontend delivery. Documented delivery: Condé Nast International (Node.js enterprise engagement, documented client quote on nearform.com). Everstream Analytics — NearForm built a data platform on AWS improving incident monitoring engagement by approximately 250% (stated in LinkedIn and conference materials). No specific Next.js App Router case studies with Core Web Vitals outcomes were found at time of writing.Best fit: Enterprises running complex Node.js backends who need a React/Next.js frontend layer delivered by the same team; organisations requiring open-source-first architecture and deep JavaScript runtime expertise alongside frontend delivery.Stack: React, Next.js, Node.js, TypeScript, Fastify, GraphQL, AWS, Google Cloud7. Netguru — Poznań / Warsaw, PolandHourly rate: $75–125
Time zone: CET/CEST (UTC+1/+2)Netguru is one of the most visible software engineering companies in international rankings, with a strong design-engineering integration model suited to early-stage and growth-stage SaaS products. Their Next.js work is delivered within a full product development lifecycle that includes UX design, product strategy, — making them a fit for companies building net-new SaaS platforms than for enterprises migrating existing infrastructure. Documented delivery: Self-reported clients include ING Bank, Volkswagen Financial Services, and Keller Williams. Specific Next.js App Router case studies with performance metrics were not found at time of writing.Best fit: Growth-stage SaaS companies that need a combined design and engineering partner to build a new product from scratch.Stack: Next.js, React, Ruby on Rails, TypeScript8. Boldare — Next.js Development Agency — Wrocław / Gdańsk, Poland
Hourly rate: $60–100
Time zone: CET/CEST (UTC+1/+2)Boldare operates as a product development partner, embedding within client teams to build SaaS products using agile delivery models. They are primarily suited to companies building net-new SaaS platforms rather than migrating existing ones. Their Next.js and React delivery is embedded within a full product lifecycle — design, engineering, testing, and iteration — rather than offered as a standalone frontend service. Clutch rating 4.9/5 (self-reported).Documented delivery: No independently verified case studies with named clients and specific Next.js performance metrics were found at time of writing. Clutch reviews reference SaaS clients across fintech, health, and enterprise software.Best fit: SaaS founders and enterprise innovation teams building net-new digital products under an agile retainer model.Stack: Next.js, React, TypeScript, headless CMS9. Blazity — Warsaw, Poland


Hourly rate: $70–110
Time zone: CET/CEST (UTC+1/+2)Blazity is a Warsaw-based software house operating exclusively within the Next.js and React ecosystem. They are one of the few European agencies where Next.js is not a service line alongside other technologies but the entire practice. Their work divides into four documented areas: performance engineering (diagnosing and resolving Core Web Vitals failures), platform migrations (from Angular, Vue, legacy React/Redux, WordPress, Drupal), full application builds, and production AI agent development on the Vercel AI SDK. Blazity ranked #33 on the Deloitte Technology Fast 50 Central Europe 2024 list, with reported revenue growth of 784% in the prior ranking cycle.Open source: Blazity maintains next-enterprise, an enterprise-grade Next.js boilerplate on GitHub built on the App Router with TypeScript, Tailwind CSS, Storybook, and unit, smoke, and e2e testing included. They also maintain a Next.js commerce starter kit and a Next.js Maintenance Mode middleware library.Best fit: Engineering teams with failing Core Web Vitals or stalled migrations; product organisations that need a senior Next.js architecture partner who transfers knowledge rather than creating dependency.Stack: Next.js (App Router), React, TypeScript, Vercel, Sanity, Contentful, Hygraph, Vercel AI SDK, Terraform (for infrastructure as code deployments)10. Makers' Den — Berlin, Germany -- ReactJS Web Agency
Hourly rate: $65–105
Time zone: CET/CEST (UTC+1/+2)Makers' Den is a Berlin-based product agency specialising in React and React Native development with headless CMS and composable commerce integrations. Their focus on custom, high-performance storefronts and full-stack applications positions them for startups and mid-sized businesses that need bespoke UI work alongside Shopify Hydrogen or Storyblok-driven content.Documented delivery: No independently verified case studies with named clients and specific performance metrics were found at time of writing.Best fit: Startups and mid-sized businesses building composable e-commerce storefronts or React-native cross-platform products.Stack: React, TypeScript, React Native, Storyblok, Node.js, Shopify Hydrogen11. Brainhub Software Development — Gliwice / Warsaw, Poland

Hourly rate: $70–120
Time zone: CET/CEST (UTC+1/+2)Brainhub is a software engineering agency whose primary engagement model is team extension — embedding senior engineers into client development teams rather than delivering end-to-end project builds. Their React and Next.js capability is oriented toward SaaS frontend development within existing engineering organisations. Clutch rating 4.9/5 (self-reported).Documented delivery: No independently verified case studies with named clients and specific Next.js outcomes were found at time of writing. Clutch reviews reference fintech and SaaS companies as clients.Best fit: Engineering teams that have an existing Next.js codebase and need senior frontend engineers embedded for 6–18 months rather than a full agency build.Stack: React, Node.js, .NET, TypeScript, AWS, React Native12. Lemonhive — London / Global

Hourly rate: $80–130
Time zone: GMT/BST (London, UTC+0/+1); global remote teamsLemonhive is a headless engineering consultancy focused on complex MACH (Microservices, API-first, Cloud-native, Headless) architecture builds. Their primary clients are digital agencies that need white-label Next.js and headless CMS delivery depth, and brands with complex integration requirements across commerce, CMS, and authentication layers.Documented delivery: No independently verified case studies with named clients and specific performance metrics were found at time of writing.Best fit: Agencies seeking a white-label Next.js engineering partner; brands with complex multi-system integrations requiring MACH architecture expertise.Stack: Next.js, Shopify Hydrogen, Sanity, Storyblok, Payload, React Native, SvelteKit13. 10Clouds — Warsaw, Poland
Hourly rate: $55–95
Time zone: CET/CEST (UTC+1/+2)10Clouds is a software company with a documented specialisation in AI-powered digital products, fintech platforms, and machine learning integrations. Their Next.js capability supports frontend delivery within backend-heavy product builds. They are better suited to projects where the primary engineering challenge is backend complexity or AI integration rather than frontend architecture or CMS-driven content operations. Self-reported clients include Pinterest and Displate.Documented delivery: Pinterest is cited as a client in self-reported materials. Specific Next.js App Router case studies with Core Web Vitals or performance outcomes were not found at time of writing.Best fit: Fintech or AI-product companies that need Next.js frontend work as part of a larger full-stack or AI-engineering engagement.Stack: React, Flutter, Python, Django, machine learning tooling, AI/LLM integrations, DevOps14. Rigby — Wrocław / Warsaw, Poland

Hourly rate: $60–100
Time zone: CET/CEST (UTC+1/+2)Rigby is a Polish e-commerce development agency focused on custom B2B, B2C, and multi-vendor commerce platforms. Their technical differentiation is depth in Medusa.js — an open-source headless commerce engine — alongside Next.js for the frontend layer. They are a narrow specialist: the right choice if you are building a custom marketplace, subscription platform, or multi-tenant commerce system, and a poor fit for CMS-driven marketing sites or SaaS dashboards.Documented delivery: No independently verified case studies with named clients and specific performance metrics were found at time of writing. Self-reported clients span North America, Europe, the Middle East, Africa, and Asia-Pacific.Best fit: Companies building custom B2B or B2C commerce platforms with complex models — marketplaces, subscriptions, multi-vendor, multi-tenant — on a modern headless stack.Stack: Next.js, React, Medusa.js, TypeScript, Node.js, composable commerce tooling15. Halo Lab — Odesa / Kyiv / Kharkiv, Ukraine

Hourly rate: $40–80
Time zone: EET/EEST (UTC+2/+3)Halo Lab is a full-service digital agency with a design-led delivery model, covering branding, UX design, web development, and QA in end-to-end project engagements. Their Next.js delivery sits within design-driven web app and marketing site builds rather than enterprise platform architecture. Self-reported clients include Corel and Oppo.Documented delivery: Corel and Oppo are cited in self-reported materials. Specific Next.js App Router case studies with Core Web Vitals or performance outcomes were not found at time of writing.Best fit: SMBs and startups that need end-to-end design and development in a single engagement, with competitive rates and high design quality as the primary requirement.Stack: React, Next.js, Webflow, CMS development, Node.js, UI/UX tooling, QA frameworksWhy Next.js Is the Default React Framework for SaaS and Enterprise Projects in 2026The React framework landscape has consolidated significantly over the past three years. According to the State of JavaScript 2025 survey — 13,000+ respondents, sponsored by Google Chrome and JetBrains — Next.js is used by 59% of JavaScript developers, making it the most adopted meta-framework by a significant margin.Three structural factors explain why Next.js framework has become the default choice for SaaS and enterprise frontend development in Europe specifically.Rendering flexibility within a single framework. Next.js supports SSG, SSR, ISR, React Server Components, and Partial Prerendering within a single project. This means the same engineering team handles performance-critical marketing pages, dynamic SaaS dashboards, and API routes without switching frameworks or splitting the codebase. The App Router, now the default since Next.js 13 and stabilised through versions 14 and 15, has matured into a production-ready foundation that engineering teams are actively building on rather than evaluating.Vercel's edge network for multi-market performance. European SaaS companies typically serve audiences across multiple countries and languages. Vercel's global CDN and edge middleware configuration deliver measurable Core Web Vitals improvements over traditional hosting setups, with direct impact on organic search performance in competitive European markets.Ecosystem maturity. The Next.js integration ecosystem — headless CMS platforms such as React CMS solutions (Storyblok, Sanity, Contentful, Payload), authentication providers (Clerk, Auth.js), commerce platforms (Shopify Hydrogen, Medusa), and observability tooling — has reached a level of maturity that substantially reduces integration risk. Native App Router support for draft mode, the Metadata API, route-level caching configuration, and the Vercel AI SDK for AI-powered features means most production requirements are covered without custom workarounds.Frequently Asked Questions about Next.JS1. What is a Next.js development agency?A Next.js agency is a software engineering company that specialises in building, migrating, and scaling web applications using Next.js — the React meta-framework maintained by Vercel. Unlike a general web development agency, a dedicated Next.js agency employs developers who work exclusively or primarily with Next.js, meaning they have hands-on experience with the App Router, React Server Components, Vercel deployments, and headless CMS integrations. When your Next.js project involves performance-critical rendering, multi-language content architecture, or a migration from a legacy platform, a specialist Next.js agency will make different, and usually better architectural decisions than a generalist team that treats Next.js as one tool among many.2. What does a Next.js agency typically charge in Europe?We can't garantee the 100% accuracy, because everything depends, but. Hourly rates for specialist Next.js agencies in Western Europe (UK, Netherlands, Germany) range from $80 to $150. Central European agencies (Poland, Ukraine) typically range from $40 to $100. Total Next.js project costs for a headless CMS migration or a new SaaS marketing site range from $30,000 to $200,000+ depending on content volume, language count, integration complexity, and post-launch support requirements. A Next.js project that involves multiple languages, CMS editorial workflows, and Vercel enterprise deployment will sit toward the upper end of that range regardless of the agency's day rate.
3. What is the difference between the App Router and Pages Router, and why does it matter when hiring a Next.js agency?The Pages Router is Next.js's original routing model, where each file in /pages becomes a route and data fetching happens via getServerSideProps or getStaticProps. The App Router, introduced in Next.js 13, uses a /app directory, supports React Server Components natively, and fundamentally changes how layouts, data fetching, and caching are structured. Vercel is actively developing new features (Partial Prerendering, improved caching primitives) exclusively for the App Router. A Next.js agency still defaulting to the Pages Router for new Next.js projects in 2026 is building on a model that will require migration in the near term — and signals they are not actively working at the current production standard.4. What built-in features does Next.js provide to improve SEO?Next.js aligns its rendering and optimisation defaults with what search engines and Core Web Vitals reward, making good SEO the path of least resistance rather than a bolt-on. The key mechanisms are:SSR and SSG deliver fully rendered HTML to crawlers, unlike client-side React apps that ship an empty <div>. Search engines index pre-rendered content far more reliably.The Metadata API (app/layout.tsx or generateMetadata()) lets you define <title>, <meta description>, Open Graph tags, and canonical URLs declaratively — per page or dynamically based on route params:export async function generateMetadata({ params }) {    return {      title: `Product: ${params.slug}`,      description: "...",      alternates: { canonical: `https://example.com/products/${params.slug}` },    };  }Automatic sitemap.xml and robots.txt are generated via convention-based files (app/sitemap.ts, app/robots.ts), keeping them dynamic and always in sync with your routes.Image optimisation via <Image> enforces correct sizing, serves modern formats (WebP/AVIF), and adds width/height attributes automatically — directly improving LCP and CLS scores.Font optimisation via next/font eliminates layout shift from web fonts by inlining font-face declarations and preloading — directly improving CLS.Streaming and React Server Components reduce TTFB and improve LCP by sending HTML progressively, benefiting both users and crawlers.Structured data (JSON-LD) is injected as a <script> tag in any Server Component, enabling rich results in search.A qualified Next.js agency treats all of these as standard delivery requirements, not optional enhancements.5. What headless CMS platforms work best with Next.js in 2026?
Sanity, Storyblok, Contentful, and Payload CMS are the four platforms with the deepest documented Next.js App Router integrations. Sanity and Storyblok have native visual editing and draft mode support for React Server Components. Payload is a TypeScript-first, self-hostable CMS that can be run within the same Next.js application. The right CMS choice depends on editorial workflow requirements, content model complexity, localisation needs, and whether the team wants a hosted or self-hosted solution.6. What should a Next.js agency deliver at project close?
A production-quality handover from a Next.js agency includes: a TypeScript codebase with automated tests (unit, integration, and ideally end-to-end); documentation covering content model schema, component architecture, and deployment processes; redirect mapping validated against the pre-launch crawl; a configured Vercel project with environment variables scoped correctly to staging and production; editor training and documentation for the CMS; and a defined post-launch support period with documented SLAs for critical and non-critical issues.7. When should I hire a Next.js agency instead of a freelancer? 
A freelancer is the right choice when scope is tight, the project is well-defined, and you need one or two specific skills — a performance audit, a CMS integration, a specific component build. A Next.js agency makes more sense when the project has moving parts that require multiple disciplines at once (architecture, frontend, CMS configuration, DevOps, QA), when the stakes of getting the architecture wrong are high, or when you need continuity after launch.

Code Less, Create More: AI-Driven App Development for React Devs.Join us for a workshop designed for React developers eager to harness the power of AI to streamline their app development process. In "Code Less, Create More," you'll learn how to build applications using the Cursor IDE with the power of AI and minimal manual coding.Explore how Cursor, an AI-enhanced code editor, revolutionizes your coding experience by seamlessly integrating with your existing workflow. Uncover its advanced capabilities: predicting your next edits, offering real-time code suggestions, and comprehending your project's architecture. This allows you to channel your energy into creativity and innovation rather than grappling with syntax and repetitive tasks.We'll guide you through initializing a Next.js project, demonstrating how to utilize AI tools to efficiently craft dynamic, responsive applications. By the workshop's conclusion, you'll possess the skills to construct sophisticated software with reduced coding effort, empowering you to become a more productive and innovative developer.Whether you're a seasoned React developer or new to AI-assisted coding, this workshop will equip you with the knowledge and tools to elevate your development projects to the next level.

Join us as we journey from React frontend development to fullstack development with Next.js. During this workshop, we'll follow along the official Next.js Learn tutorial with Eric Burel, professional trainer and author of NextPatterns.dev. Together, we'll set up a Next.js website and explore its server-side features to build performant apps.
- Introduction: discovering Next.js and its server-centric philosophy- Crafting a perfectly optimized multi-page website- Making sense of Next.js server-side rendering capabilities- Conclusion: how Next.js empowers you as a React developer

Next.js on the Edge with its new secrets sauce for better user experience and high performance. We will unveil Next.js secret sauce and the way of working to deliver the best user experience in Edge network and the new features including partial pre-rendering. How to make use of the Server component and its high performance on Edge network.
Table of the contents:- Intro to the Edge network- Edge runtime in V8- Use cases of the edge functions- Deploy a service on the edge network

React continues to evolve their beta capability, React Server Components, and they're continuing to further develop them in partnership with frameworks like NextJS.In this workshop, attendees will learn what React Server Components are, how to effectively build and use them in NextJS, and focus on one of the major advantages of React/NextJS: reusability through components.We will also cover related beta technologies enabled by the `app` directory, such as nested layouts and server actions (alpha/experimental capability).Join us for this hands-on, 120 minute workshop!Technologies:
React, JavaScript/Typescript, NextJS, Miro

If you’re like me, you probably have a million side-project ideas, some that could even make you money as a micro SaaS, or could turn out to be the next billion dollar startup. But how do you know which ones? How do you go from an idea into a functioning product that can be put into the hands of paying customers without quitting your job and sinking all of your time and investment into it? How can your solo side-projects compete with applications built by enormous teams and large enterprise companies?
Building rich SaaS products comes with technical challenges like infrastructure, scaling, availability, security, and complicated subsystems like auth and payments. This is why it’s often the already established tech giants who can reasonably build and operate products like that. However, a new generation of devtools are enabling us developers to easily build complete solutions that take advantage of the best cloud infrastructure available, and offer an experience that allows you to rapidly iterate on your ideas for a low cost of $0. They take all the technical challenges of building and operating software products away from you so that you only have to spend your time building the features that your users want, giving you a reasonable chance to compete against the market by staying incredibly agile and responsive to the needs of users.
In this 3 hour workshop you will start with a simple task management application built with React and Next.js and turn it into a scalable and fully functioning SaaS product by integrating a scalable database (PlanetScale), multi-tenant authentication (Clerk), and subscription based payments (Stripe). You will also learn how the principles of agile software development and domain driven design can help you build products quickly and cost-efficiently, and compete with existing solutions.

Join us for a hands-on workshop where we'll show you how to level up your React skills to build a high-performance headless website using Next.js, Sanity, and the JAMstack architecture. No prior knowledge of Next.js or Sanity is required, making this workshop ideal for anyone familiar with React who wants to learn more about building dynamic, responsive websites.
In this workshop, we'll explore how Next.js, a React-based framework, can be used to build a static website with server-side rendering and dynamic routing. You'll learn how to use Sanity as a headless CMS to manage your website’s content, create custom page templates with Next.js, use APIs to integrate with the CMS, and deploy your website to production with Vercel.
By the end of this workshop, you will have a solid understanding of how Next.js and Sanity.io can be used together to create a high-performance, scalable, and flexible website.

- React Bricks: why we built it, what it is and how it works- Create a free account- Create a new project with Next.js and Tailwind- Explore the directory structure- Anatomy of a Brick- Create a new Brick (Text-Image)- Add a title and description with RichText visual editing- Add an Image with visual editing- Add Sidebar controls to edit props (padding and image side)- Nesting Bricks using the Repeater component- Create an Image gallery brick- Publish on Netlify or Vercel- Page Types and Custom fields- Access Page meta values- Internationalization- How to reuse content across pages: Stories and Embeds- How to create an E-commerce with Products’ data from an external database and landing pages created visually in React Bricks- Advanced enterprise features: flexible permissions, locked structure, custom visual components

- Introduction- Prerequisites for the workshop- Fetching strategies: fundamentals- Fetching strategies – hands-on: fetch API, cache (static VS dynamic), revalidate, suspense (parallel data fetching)- Test your build and serve it on Vercel- Future: Server components VS Client components- Workshop easter egg (unrelated to the topic, calling out accessibility)- Wrapping up

You might have read already about Jamstack. You probably already used Next.js, and recently you may be hearing a lot about the headless CMSs. This quick course will put all the pieces together and show you why Storyblok, combined with Next.js, is the best combo for your next project. Stop by and try it yourself!
- In-depth Jamstack knowledge. How it changed from old times to the modern world. Learn how Jamstack was created by comparing Static Sites and Dynamic Sites.- How Next.js serves content, and how content is served with Static Site Generation (SSG).- Atomic design methodology, and how this is applied to the content management system.- Hands-on project experience by building a Jamstack project with Next.js and Storyblok.
Prerequisites- Any Text . Visual Studio Code recommended- Node.js LTS- NPM or Yarn- GitHub account- Vercel account- Familiarity with JavaScript, React, and Git. Having worked with Next.js before is a plus
What's included1. Introduction and overview of the workshop2. Introduction to Jamstack3. Introduction to Atomic Design4. Overview of Headless CMS5. Introduction to Storyblok6. Next.js app creation7. Storyblok space creation8. Next.js and Storyblok connection9. Custom components creation10.First-page creation11. Introduction to Visual 12. Dynamic pages addition13. Blog section creation14. Deployment on Vercel

On this crash course, we'll create a new project in the headless CMS, fill it with data, and use the content to build a multilingual Next.js app. We'll spend a lot of time in code to:- Generate strongly typed models and structure for the content- Set up the site for multiple languages- Use respective language codes in content fetching and incorporate language fallbacks- Resolve multilingual content from rich text fields
You will learn:- How to work with content from headless CMS (Kontent.ai)- How content model can be leveraged to generate TS types and what benefits it brings to your project- How to add multilingual capabilities to Next.js website- How to use language fallbacks- What are the typical gotchas when working with multilingual content

Ensuring your code is ready for production without enabling your features to your entire user base used to involve a lot of guesswork. By using feature flags, we can allow our development teams to preview work-in-progress features and unreleased functionality in production without redeploying our code.
In this workshop, we’ll run through the fundamentals of feature flagging on both the client and server sides. We’ll cover working with LaunchDarkly’s SDKs within the context of a React application with a node backend, flagging at different places in the stack and give an introduction to rule targeting in the platform.

Next.js is a compelling framework that makes many tasks effortless by providing many out-of-the-box solutions. But as soon as our app needs to scale, it is essential to maintain high performance without compromising maintenance and server costs. In this workshop, we will see how to analyze Next.js performances, resources usage, how to scale it, and how to make the right decisions while writing the application architecture.

In this workshop, you’ll learn how to build a Next.js app that uses Apollo Client to fetch data from a headless WordPress backend and use it to render the pages of your app. You’ll learn when you should consider a headless WordPress architecture, how to turn a WordPress backend into a GraphQL server, how to compose queries using the GraphiQL IDE, how to colocate GraphQL fragments with your components, and more.

Next.js is a compelling framework that makes many tasks effortless providing many out-of-the-box solutions. But when it comes to authentication and user security, it's our mission to make it reliable, secure, and efficient. In this workshop, we'll focus on different user authentication and session management approaches, starting from a custom authentication strategy (that we will build together), and ending learning how to identify and integrate the right auth provider (Auth0, Firebase, etc.) for any app.
Table of contents:- A brief introduction to Next.js- Building an authentication mechanism from scratch- Why we should avoid custom authentication- How to identify the proper authentication mechanism and provider- Integrating NextAuth.js, Auth0, Firebase, or any other provider

In this workshop we will build and deploy a full stack GraphQL application using Next.js, Neo4j, and Vercel. Using a knowledge graph of news articles we will first build a GraphQL API using Next.js API routes and the Neo4j GraphQL Library. Next, we focus on the front-end, exploring how to use GraphQL for data fetching with a Next.js application. Lastly, we explore how to add personalization and content recommendation in our GraphQL API to serve relevant articles to our users, then deploy our application to the cloud using Vercel and Neo4j Aura.

Table of contents:
- Next.js overview and getting started with Next.js
- API Routes with Next.js & building a GraphQL API
- Using the Neo4j GraphQL Library
- Working with Apollo Client and GraphQL data fetching in Next.js
- Deploying with Vercel and Neo4j Aura

Blitz.js is the Fullstack React Framework. It's heavily inspired Ru on Rails and is focused on making you as productive as possible. It's built on Next.js and adds all the missing pieces you need for building a fullstack app with a database. By far the biggest innovation of Blitz is the new "Zero-API" data layer that abstracts away the API so you don't have to mess with REST or GraphQL APIs!

Simon will introduce all the important parts & guide you through getting started with Blitz, so you'll know if you might want to use it or not.

Jamstack frameworks are changing the way we build top-of-the-line experiences on the web. They are performant, secure and enable developers to build web apps faster than before. In this workshop, Nick DeJesus will walk you through what it's like to build an e-commerce site using NextJS, use-shopping-cart and theme-ui. You will learn how serverless functions with Netlify to help you make secure transactions and how to build accessible UI components that extend use-shopping-cart's abilities.

You'll learn how to build highly scalable cloud APIs with AWS and integrate them with Next.js and style them using Tailwind CSS.