JavaScript experts, mentors, speakers

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.

Arsalan Khattak is a Developer Advocate passionate about modern web technologies. He has created content for GitHub Education and spoken at major events like Google DevFest and Microsoft Reactor. Beyond tech, Arsalan is an adventurer and motorcycle enthusiast.

Theo is a full stack designer, developer, and entrepreneur, passionate about dev tools and building simple solutions to complex problems. He's worked in a range of industries for companies like Breather, System Initiative, and Clay.

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.

I like to introduce myself as a hybrid — part Enterprise Architect, part Senior Solution Architect. I thrive at both ends of the spectrum: shaping strategic E2E target state architectures and rolling up my sleeves to prototype Industrial IoT, AI and Edge solutions with expertise on Azure, AWS and Google Cloud. I’m passionate about solving complex problems, building future-ready platforms, and delivering impact across the products that we build.

I'm a seasoned Product Manager with over five years of experience in a leading digital media company, where I have overseen the development and scaling of multiple high-traffic news platforms built on React. With an engineering background from a prestigious government college in Delhi, I bridge the gap between technical innovation and business strategy. Their expertise spans real-time user management, subscription lifecycle optimization, and cross-functional team leadership. I'm passionate about sharing actionable insights on building robust, scalable, and user-centric React applications that thrive in fast-paced, high-demand environments.

Founder at uncloud on a mission to simplify baremetal for software teams. Software dev at heart with a passion for distributed systems and making things run at scale ⬥ YouTuber ⬥ Dad of Ida 👶🏻 Caretaker of Frodo 🐶

Software developer with more than 20 years of professional experience. Team member of Vite and Svelte.

Shaundai is a front end Senior Software Engineer (Netflix) based in Georgia, US. Through her work as a course instructor (tsforjs.com) and her YouTube channel (youtube.com/shaundai), she aims to make programming interesting and approachable for all.

J. B. Rainsberger (@jbrains@mastodon.social) is a professional 5-pin bowler who enjoys consulting with software development professionals and the companies that employ them. He guides companies to better results from their software projects while he helps individuals work with less stress. He wants everyone to actually realize the promised benefits of Lightweight approaches to software development, which includes making sense of the "Agile" chaos of the past quarter-century. Companies engage him for remote working sessions, training courses, on-site workshops, and in-person consulting visits. Individuals, especially those stuck in companies that don't have the budget for formal consulting, can get the help they need by joining J. B.'s mentoring group by visiting https://experience.jbrains.ca. (Quite often, they can convince their employer to pay for that!) He lives in Atlantic Canada with his wife, Sarah, who is busy showing the Open Source world how to have quality documentation even with a mostly-volunteer project community. They travel to Europe less often than they used to, which makes each visit even more enjoyable.

Evangelia Mitsopoulou is a seasoned tech professional with nearly two decades of experience in software engineering, with a specialization in frontend development for the past 12+ years. She has a strong full-stack engineering foundation and a background in semantic web and linked data engineering, which informs her approach to building intelligent, structured systems. As the founder of her own academy, Evangelia blends her expertise in frontend software engineering with instructional design and cognitive load theory to create learning experiences that help engineers master complex concepts efficiently and retain knowledge effectively. Her career includes roles at prominent European organizations such as Elastic, ETH Zurich, Google, EF, and several fintech startups. Alongside running her academy, she advises startups as a fractional expert, helping them navigate technical challenges and scale successfully.

Simon is a full-stack developer and React Native specialist with a keen interest in experimenting with bleeding edge software, building cool products, and sharing knowledge. Over the years he’s had a diverse set of experiences ranging from mobile apps, full-stack development, web3, AI & LLM’s. His clients have won awards in the healthcare space, been featured at the Cannes Film Festival, and were a partner in the Dubai 2020 Expo. Recently Simon has been exploring the frontier of the future as a member of the Network School in Forest City, Malaysia.

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

Heather is a generative AI expert, Top 20 MarTech influencer, international speaker and Founder of AI for Non-Techies (AI training and learning hub). Regularly featured in Forbes magazine, Heather brings energy and enthusiasm to the world of AI, her jargon-free approach helping people overcome confusion or fear when it comes to where to start. Heather has formed powerful working partnerships with Salesforce, Nokia and Starling and drove $75m in client pipeline in 2023, all with the help of AI. Passionate about purposeful business, Heather and her team uses 20% of all profits to run hands-on work with isolated elderly people.

Saki is a seasoned software developer with decades of experience, specializing in JavaScript and modern web technologies. He has led the development of numerous web applications across various industries, blending deep technical knowledge with hands-on problem-solving. As a consultant and trainer, he supports teams in building scalable, high-quality solutions. His passion is sharing knowledge and promoting clean, maintainable code.

Nik is the Product Director and Managing Partner at Albato, a market leader in iPaaS and NoCode. With over 8 years of experience, Nik is an expert in all aspects of startup creation and development from 0 to 1. In addition to his main job, he also mentors young professionals, participates in conferences, and hosts offline meetings for entrepreneurs and product leaders. In his free time, he enjoys playing paddle, volleyball, hiking, and traveling.

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.

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.

Livecoder, music technologist, educator. creative coding for sound, visuals and algorithmic compositions. maxmsp, jitter, javascript, pd, p5.js, mercury.

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.

Self taught frontend developer from India who loves to tinker around with modern web technologies, College student & currently working at timeless.co

Jeff Hoffer is the Technical Leader for Growth at Rollbar, working to improve Rollbar's current products and assist in developing new products that engage customers by bringing Continuous Code Improvement tools to where they are. With over 20 years of experience developing software for startups and enterprises, scaling to Internet traffic, building and maintaining commercially licensed products, and developing internal enterprise tools, Jeff has worked as a Software Engineer, Software Architect and in Director and VP roles leading technology organizations at Intuit, The Bouqs Company, Lunchbox (acquired), Accordent (acquired by Polycom) and Countrywide along with consulting work at many other prominent firms. Jeff has a passion for software development which is why he loves working at Rollbar so much with the focus on improving the professional lives of developers and the strong engineering culture.

Sam Stepanyan is an OWASP London Chapter Leader and an Independent Application Security Consultant with over 20 years of experience in the IT industry with a background in software engineering and web application development. Sam has worked for various financial services institutions in the City of London specialising in Application Security consulting, Secure Software Development Lifecycle (SDLC), developer training, source code reviews and vulnerability management. He is also a Subject Matter Expert in Web Application Firewalls (WAF). Sam holds a Master’s degree in Software Engineering and a CISSP certification.