JavaScript experts, mentors, speakers

Engineering leader with 10+ years of experience in software development, QA, and team leadership. Passionate about delivering high-quality products, empowering teams, and fostering a culture of collaboration and continuous growth. Skilled in engineering management, project execution, and aligning technical excellence with business goals.

Yossi Kahlon is a distinguished technology leader who has spearheaded transformative tech solutions, including leading the Google Cloud Console team in New York, significantly contributing to the development of Google Docs, and leading privacy and security efforts at Waze. As a former Director of Engineering for ClickHouse, his work has been pivotal in advancing database technologies for high-scale, real-time analytics. Yossi brings his wealth of knowledge and experience to co-founding and building Squid AI, an AI agent platform built for developers by developers.

Kelly Goss is a process automation specialist and the founder of Solvaa, a no-code systems, process and automation consultancy. She is the author of "Automate It with Zapier" and "Automate It with Zapier & Generative AI"; a Xero Certified Advisor, Pipedrive CRM Certified Partner, SmartSuite Certified Partner and one of the very few women Zapier Certified Experts. Kelly and the Solvaa team help businesses around the world use the right digital tools and streamline their repetitive tasks to achieve their productivity goals and save money. Kelly loves painting, travelling, and watching psychological thrillers in her spare time.

I am a lead full-stack developer at l’Oréal, leveraging 7 years of expertise. Starting as a data scientist, my curiosity for web components led to a seamless transition into full-stack development, where I challenge myself everyday. Aside from tech, I love board games and sport in general.

Amit Mandelbaum is a tech lead at AI21 labs, prior to joining AI21 labs Amit was an entrepreneur in the field of GenAI and a Director of AI at Nvidia. Amit is also an Angel investor in the field of AI and is a known keynote speaker and consultant on GenAI agents.

Jarred is a Technical Lead at ADB Safegate, where he leads the development of the Intelligent Apron suite of products, which are aimed to increase the performance and safety of airport operations, while lowering the environmental effect aviation has on the world. Originally from the US, he is now based in Malmö Sweden where he serves as a mentor to multiple teams across Europe, and is passionate about solving complex problems while teaching others along the way.

Lena Reinhard (Website, LinkedIn) is an engineering leadership coach, mentor, and organizational developer supporting technology leaders in growing themselves and succeeding in the complexity of engineering organizations. Previously, Lena served as VP Engineering with CircleCI and Travis CI, and a SaaS startup co-founder & CEO, and has dedicated her career to helping leaders and their organizations excel in times of high change and challenging markets. She has worked with a broad variety of companies at all stages, from startups pre-founding and bootstrapped, scale-ups, to late-stage/pre-IPO and VC-funded ventures, to corporations and NGOs. Find her writing on leadership and more about her work at lenareinhard.com.

Denis Ermakov is a software engineer with 15+ years of experience building developer tools and scalable systems. He currently works as a Lead Software Engineer at Tehpotok, where he designs architecture, CI/CD pipelines, and automation for fintech products. Denis previously worked on search infrastructure at ANNA Money and led multiple engineering teams as a CTO and delivery manager. His interests focus on AI-powered developer workflows, CI/CD automation, and improving software delivery systems.

Tiki Lobel is a fintech software developer who leads a team at Rapyd to liberate global commerce and connect the world’s disparate payment systems into a single integrated network. Her team focuses on core API development and Tiki’s ability to handle multiple projects simultaneously, and her understanding of complex dependencies within a larger system, make her an integral part of all product development in the company.

Marissa Masangcay is a Technical Marketing Specialist for Cloudinary and has worked for the company since 2017. She has also served as one of Cloudinary’s Developer Support Engineers, where she responded to customers’ technical support requests and feature-related questions, as well as debugged customer issues and wrote code samples in multiple development frameworks. She has also served as a volunteer instructor for Girls Who Code, which is a nonprofit dedicated to teaching girls in grades 6-12 the fundamentals of coding. Marissa graduated with her bachelor’s degree in computer science from the University of San Francisco.

Richard is a Sr. Partner Solutions Architect at AWS focusing on Application modernization using Serverless and Containers. During his 3-year tenure at AWS he has played a pivotal role assisting partners & customers in various industries with their cloud adoption and modernization strategies. Richard collaborates with the development teams and engineering leaders to optimize software delivery in the cloud, emphasizing best practices and AWS's capabilities.

Dirk-Willem van Gulik is one of the internet engineers behind the world wide web and of the founding fathers of the apache web server. He was the President of the Apache Software Foundation during its first 10 years. He has worked for the Joint Research Centre of the European Commission, the United Nations, telecommunications firms, several satellite & space agencies and founded several startups. He participated in different international standards bodies, such as the IETF and W3C on metadata, GIS, PKI, Security, Architecture and Internet standard since the early days. He build the initial engineering team at the very first ‘webserver’ startup: Covalent, helped make big-data and the semantic web reality at Asemantics and created the first first instant play P2P viewer at joost.com. He was the Chief Technical Architect at the BBC where he shaped the audience facing development-delivery platform Forge in the time for the 2020 Olympics and where he made information security and compliance a core enabler for business processes. He provides technical due diligence to investors and assists companies with their technology; taking an (interim) CTO role where needed. He currently works on several medical and privacy intensive security projects with a heavy emphasis on Architecture and Governance. During the Corona crisis he assisted the Ministry of Health of the Netherlands, the EU and the UN with the `CoronaMelder'; where opensource, cryptography and security-by-design helped build trust. And, more recently has spend waay to much time in Brussels on the Cyber Resilience Act (CRA) and the Product Liability Directive (PLD) as Europe brings in significant regulation of IT and Open Source. When not at work, he loves to sail or hang out with the lovely people at his local https://makerspaceLeiden.nl.

Kseniia Korostelova is a senior engineering leader with over 10 years of experience building complex software systems and leading engineering teams through high-stakes product launches. She has managed engineering organisations of up to 50 engineers and specialises in scaling teams and systems in demanding technical environments. Her work focuses on how AI is reshaping engineering leadership. Through her writing and talks, she explores the concept of Organic Leadership: using AI to remove operational noise while preserving the human judgment, trust, and mentorship that teams depend on. Kseniia writes about leadership and technology in her Substack, "Oh Mind the Gap". Outside of work, she enjoys cooking, being near the sea, and occasionally growing tomatoes, which inspired the metaphor behind Organic Leadership.

Stephanie is a Senior Frontend Engineer at Beamery, and a seasoned full-stack engineer with considerable experience in the financial and public sectors. She's a passionate advocate for tech-for-good, diversity, and developer education. As a speaker, she's known for her entertaining talks and irreverent sense of humour. She is currently developing Beamery's AI-powered talent lifecycle management platform.

Joel is a CTO Coach who supports start-up and scale-up CTOs to successfully and confidently navigate the changes in their roles as their businesses evolve. He has over 20 years experience building, scaling and leading software development teams, mainly in start-ups, where he held both CTO and COO roles.

Professional designer, web developer (freelance), business analyst (Cencosud) and teacher (PUC). Specialized in graphic design, UX/UI, and web development, I have garnered experience in both corporate and educational sectors. As an active volunteer at JSConf Chile, Fundación Antonia, Technovation Girls, and Women Who Code, I am recognized for my communication skills, leadership, and commitment to inclusion in STEAM. I possess a proven track record in teaching and simplifying complex technical concepts. My active participation in tech communities and a unique perspective on user interaction design position me as an influential voice in merging algorithmic art with programming, particularly in JavaScript.

Ryan Feigenbaum is a Dev Advocate at GrowthBook, helping teams build scalable feature flagging and experimentation systems. A JavaScript enthusiast with a love for performance and developer tooling, they’re passionate about making experimentation seamless for engineers. When not deep in flags and rollouts, they’re probably sipping a bourbon, playing chess, and having a spirited disagreement with their dog, Mel.

Ido Moshe is a software engineer with over a decade of experience building scalable web applications and developer tools. He currently works on charting libraries at AG Grid, focusing on clear, high-performance data visualization. He has led front-end architecture across diverse domains, with a focus on building modular UI systems, streamlining development workflows, and reducing complexity in evolving codebases. His work emphasizes maintainability, clarity, and thoughtful abstraction.

Jonas spent years supporting startups as a React and Next.js freelancer. Now, he leverages his expertise as a Developer Success Engineer at Vercel to help customers succeed. When he's not programming, Jonas enjoys preparing the perfect espresso.

Ian Schwartz is a Principal Developer at Cargurus with nearly a decade of experience in JavaScript, and more recently, TypeScript. His passion lies in functional programming, which he loves to integrate with React to build robust and scalable web applications. With a strong background in modern JavaScript frameworks and libraries, He is dedicated to pushing the boundaries of what's possible in web development while fostering a collaborative and innovative environment. He has a dog that looks like a cow.

An avid technologist, Richard has worked on a variety of projects with a diverse range of people, crossing technologies, languages, and continents. With a particular focus on the front end space, he is currently working across teams to help build and develop the tech function at Sainsbury’s. Passionate about teaching and sharing, he’s also a co-organizer of JavaScript London and was previously a senior coach at React GraphQL Academy helping professional devs take their skills to the next level.

Oleksandr Tryshchenko - Senior Engineering Manager @ Personio He has experience with micro-frontends across three SaaS companies. Initiated and led the migration of FreshBooks from a monolithic UI to a micro-frontends architecture. Currently, he serves as a Senior Engineering Manager at Personio, where he leads the efforts to migrate the entire organization, which encompasses over 130 micro-frontends, to a new design system.

Alex is Partner Program Manager on the Microsoft Edge team and Blink API OWNER. Before joining Edge in 2021, he worked on Chrome’s Web Platform team for a dozen years where he helped design many new features. He served as overall Tech Lead for Chromium’s Project Fugu, lead Chrome’s Standards work, and acted as a platform strategist for the web. He also served as a member of ECMA TC39 for more than a decade and was elected to three terms on the W3C’s Technical Architecture Group. His technical projects have included Fugu, Progressive Web Apps, Service Workers, and Web Components, along with ES6 features like Classes and Promises. Previously he helped build Google Chrome Frame and led the Dojo Toolkit project. Alex plays for Team Web.

Hey, I am Joban, and I am currently working as a software engineer at Microsoft Azure. I have been developing planet-scale backend services for the past 2 years and would like to share my experience with Microsoft Orleans Framework, we have been using at Microsoft Teams.