JavaScript experts, mentors, speakers

Alex Shershebnev is a seasoned Computer Vision and MLOps Engineer with over nine years of experience shaping the future of AI-driven software development. Currently, Alex leads the ML/DevOps team at Zencoder, where he leverages his extensive background in Software Engineering, ML and DevOps to deliver high-quality machine learning solutions. His work spans complex data pipelines, cloud infrastructure management (GCP, Kubernetes), and advanced ML/DevOps pipelines, ensuring scalability and efficiency.

Daniel Goren is a lead researcher at Evinced, a pioneering company specializing in automating the detection of accessibility violations. With 6 years of experience and a deep passion for accessibility, Daniel is committed to driving innovation and best practices in the industry.

Benjamin Swerdlow took a break from his studies at UChicago, to go work as a Senior Backend Engineer for Apple, who recently took a break from Apple to build Freestyle. He's been building in the Open Source community since high school, and was a technical lead for the World Health Organization's COVID-19 App team.

Graham is the Co-founder and CEO of GrowthBook, the most popular open-source feature flagging and A/B testing platform. GrowthBook is backed by Y Combinator and Khosla Ventures. Before starting GrowthBook, Graham was the CTO of Education.com for 6 years. Graham is a three-time startup founder, including starting an international non-profit to increase access to communication in the developing world, particularly sub-Saharan Africa. He has a degree in Physics from CMU.

Fullstack TS dev. I like mending legacy code. I organize a few meetup groups in Montréal, including React MTL and Software Crafters.

Andreia brings a wonderful mix of academic experience and open-source passion to Genezio. Her expertise shines through in her contributions to streamlining FaaS/serverless deployments for the end users. Andreia is a passionate public speaker and technology advocate. She empowers developers to write clean, bulletproof code through her talks and articles. When she's not elbow-deep in writing code, you might find her talking about best practices for cloud and backend development at conferences or meetups.

Jiri is an Integrations Engineer at Kontent.ai. He loves to write type-safe, functional code using TypeScript and React as his primary tools. Always eager to learn and keep up with new technologies to enhance his skills and work, he wants to promote the advantages of this approach to project development in the community.

Charly Gomez joined Sentry in 2024 as a Software Engineer. He builds, breaks, fixes and maintains Sentry's JavaScript SDKs out of the city of Vienna, while having also lived several years in Spain and Italy. Charly enjoys salsa dancing, and plays a host of sports, including sailing, padel, cycling, football and is a CrossFit enthusiast.

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.

With 15+ years spanning distributed systems, real-time data infrastructure, and high-performance UIs across Google, Microsoft, Spotify, and Booking.com, Valerii is passionate about developer experience, low-latency systems, and bridging the gap between complex backend architectures and intuitive user-facing products.

Matija is currently a Director of Engineering at Workera, an AI-powered skills intelligence platform for enterprise workflows. At Workera, he leads teams that create assessments based on enterprise knowledge bases and evaluate employees' skills to guide further upskilling. Over the past 12 years, he has held various leadership roles in product and engineering across the financial, semiconductor, and education technology sectors. The main tech questions he enjoys solving are: “How can we get people to play to each other’s strengths?” and “How can we encode architecture so it doesn’t live only in a document or in people’s minds?” After work, his time is delightfully filled with being a parent to two young children, biking, swimming, following F1, and playing his current favorite game: GeoGuessr.

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.

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.

Software Developer at ORTEC | Applied Math, Mechanical Graduate from TU Delft

Jason Santos is a Senior Solution Architect at Rangle.io, where he is responsible for mentoring teams, understanding problems, finding solutions, and providing technical expertise to different projects. In the few years he has been at Rangle, he was able to contribute to the success of large projects in the Banking, Healthcare and Electronic Payment spaces, helping shape Enterprise architecture, leading teams and implementing full stack solutions using NodeJS microservices and cloud-native technologies, as well as both Angular and React. He brings with him 30 years of experience in building software across multiple languages and environments, from embedded software to IDEs and Debugging tools -- designing and implementing software frameworks and building applications on both back-end and front-end since the late 1990s. Being a certified SAFe Agilist, Jason is a strong advocate of process improvement, DevOps and agile delivery practices; he is also passionate about knowledge sharing and mentoring other developers.

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.

I'm a frontend engineer at Polar Signals working on continuous profiling visualization tools. When I'm not coding, I enjoy watching The Office and taking pictures on my analog camera.

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.

Sylwia is a Senior JavaScript Developer with over a decade of experience. She has worked on a wide range of projects, from greenfield applications to complex migrations. As a Tech Lead, she focuses on helping teams modernize legacy codebases and build sustainable solutions.

Kat works as Quality Engineer at Zoopla. Tried lots of paths: fine arts, comparative literature, social psychology and cognitive science studies before discovering the most enjoyable so far tech path. Kat solves automation testing challenges at work and jigsaw after work. Lives in Scotland.

Nancy is a Millennial Executive at a Fortune 500 company as well as a certified Executive and Career Coach. With a 15-year career in innovative startups and large companies, she understands the challenges of Modern Leadership intimately. Nancy works with modern leaders to navigate their career and leadership with more confidence, purpose, and impact.