JavaScript experts, mentors, speakers

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.

Lenny is a Solutions Architect at Apollo Graph in San Francisco, CA. He was previously a software engineer and graph champion at Square. When he’s not thinking and talking endlessly about GraphQL and frontend, he’s probably trying to recreate some dish from a YouTube cooking video or hanging out with his wife and son.

Johan Eliasson is CEO & Co-Founder of Nhost. Johan has been building apps his whole life and is passionate about making it easy to develop web and mobile apps. Prior to Nhost, Johan helped grow his family business, driving innovation in the Swedish water treatment market. Johan graduated from Blekinge Institute of Technology with a Master of Science in Computer Security, Computer & Information Systems.

Keren is a senior software engineer with over a decade of experience in the industry. She holds an M.Sc. in Computer Science and is passionate about React and learning new technologies. Keren volunteers as a program manager at Baot, a community that supports women in R&D in their professional growth. She instructs and inspires developers to write blogs in her tech blogging workshops. Keren has experience as a dev community leader and a co-organizer of meetups and events. And in her not-so-spare time, she studies psychology. Her hobbies include drawing, photography, and singing.

Software developer building on the web with TypeScript, React, Node.js, and more. Writer, YouTuber, and lifelong learner who enjoys sharing knowledge with others

Senior Developer at Wunder.

Elina builds web apps, untangles state logic, and occasionally wins battles against heavy data waves coming from the backend. She enjoys crafting complex UIs for unusual users, cares about good architecture and mental health, and firmly believes that “just one more refactor” is a valid personality trait.

Hi, I'm Walmyr. I'm a software engineer who loves testing. I'm also a clean coder, blogger, YouTuber, podcaster, Cypress.io Ambassador, online instructor, mentor, speaker, an active member of the testing automation and JavaScript communities, and a fan of good music, tattoos, gardening, vegan 🌱 food, and skateboarding.

Jan is director of engineering at &why and passionate about creating an engineering culture that allows everyone to do their best work. In his free time, he creates a digital atlas of the world's wine regions.

Sierrah Coleman is a seasoned Technical Product Manager with a proven track record of driving product success in high-growth tech environments. At Indeed, she spearheaded initiatives that led to a 20% increase in positive relevance rating feedback and improved job match relevance by 9% through refined ML-based recommender systems. Her leadership in developing and launching an AI-powered query-relevance scoring feature boosted organic apply starts by 20% and sponsored apply starts by 15%. During her tenure at Cisco, Sierrah Coleman increased customer retention by 12% through effective communication strategies and competitive analyses, leading to a 5% increase in annual revenue. She successfully launched an auditing feature, securing substantial upsell opportunities and contract renewals.

Sarah Rainsberger leads a large open-source software documentation project with several maintainers and over 1000 community contributors. She brings a background in high school mathematics education, academic counseling, and curriculum development to her current technical writing and open source community building. She lives in Atlantic Canada with her husband J. B. (Joe). In her spare time, she photographs birds.

Chinmay is a Technical Evangelist at Epsagon with experience in data center and cloud technologies. Previously, he worked at companies such as Intel, IBM and early-stage startups. Chinmay has an MS in Computer Science from Columbia University and an MBA from UC Berkeley. In his free time, he loves traveling and exploring restaurants.

Gabriel is a Node.js core collaborator, TSC member emeritus, and a member of the Node API working group with a passion for improving performance. Formerly of Nokia, Intel, and SpaceX, currently at Auction.com.

André is a seasoned developer with over 20 years of experience and is currently a Principal Engineer at bettermarks, a Berlin-based EdTech company. When AFK, he loves biking, watersports and woodworking.

Christian Sparks is a Systems Engineer working at Cloudflare, primarily focused on Builds and Automation for the developer platform. His work ranges across the stack, from front-end to Golang backends, to bleeding edge Workers-based services. Specifically, he works on the customer-facing build systems for the Pages and Workers CI, helping make the process of deploying applications on Cloudflare easier.

Wowa Effect aka Wowa Barssukov revives the art of creating music with knowledge and analog instruments. His unique tracks originate from a combination of retro synthesizers, drum machines, and samplers. He transcends mood into music, no exact recreation possible when playing live; all sounds originated by hand. His debut performances were underground raves and house parties in 2018. His musical knowledge is based on classical Russian music education. Growing up in Siberia in the ’90s, his childhood was filled with communism, the sense of upheaval, and the upcoming of an underground raver scene. He started his electronic music journey under the name ‘Limpfate’ in 2017 first by creating his tracks with Ableton Live, until growing bored of the unengaging production. He then discovered analog synthesizers and drum machines, which shaped the sound of the electronic music scene in the ’90s, and spent countless hours on mastering the complex devices. This art of performing allows Wowa to explore the vast horizon of electronic music. Therefore his sounds vary from ecstatic electro over the groovy house to deep techno. His tracks take the listeners on journeys through the unknown, full of surprising details. When watching Wowa perform, you will notice a set of blinking lights, cables, and his straight face. When Wowa plays, it’s without exception, live. Wowa now lives in Berlin, close to the pulse of the original German techno scene with its renowned Berghain.

Senior Software Engineer at CureApp inc, & CTO at RENDEZ-VOUS.

dr. Robin Marx is a Web Performance Expert at Akamai Technologies. He focuses on the performance and workings of modern Web protocols like HTTP/2, HTTP/3 and QUIC and has been a contributor in the IETF QUIC working group for multiple years. Robin often talks about web performance at international conferences, making the complex situations more insightful to the wider public. On the weekends, he likes to hit other people with longswords.

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.

Wesley is a Senior Principal Engineer at Modus Create, with over 13 years of experience building cloud-native applications for web and mobile. Working as a tech leader he's spending most of his time working closely with engineering, product, and design to solve customers' business problems. His experience sits at the intersection of hands-on coding, innovation, and people management with a mix of experiences going from AWS, Java and TypeScript to startups, agile and lean practices.

Experienced sales engineering leader with an extensive background in project management, data analytics, BI, data science and a wide range of software skills. Trusted consultant for technical expertise and sales strategy.

For more than twelve years, Itai has been creating on the full spectrum of software development. Anything from simple POCs to intricately complex systems, from native mobile development to fully fledged backend architecture, from libraries and SDKs to client facing applications.

James is Co-Founder and CEO of ElectricSQL. Prior to founding Electric, he co-founded the Post Urban venture builder and was co-founder and CTO of synthetic data company Hazy.

Łukasz Jaźwa, CTO at Workflow Builder. Passionate about diagramming and algorithm design, with a strong focus on graph theory. Loves escaping to the mountains for a good trek after hours.