JavaScript experts, mentors, speakers
Explore personalities and their talks, workshops, videos, and articles. While we focus primarily on JavaScript and frameworks like React, Vue, Svelte, and Node, you may find experts on other fields on our Portal. To name a few – Testing, DevOps, Machine Learning, and many more!

J. B. Rainsberger
jbrains.ca, Canada
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.

Nik Grishin
Albato, Portugal
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.

Evangelia Mitsopoulou
Tech Founder, Mentor @Philomath Academy, Thessaloniki, Greece
Mentorship available
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.

Jiri Lojda
Kontent.ai, Czech Republic
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.

Frédéric Harper
TinyMCE, Canada
Frédéric Harper is a seasoned Developer Advocate with over 20 years in tech, currently Senior Developer Relations Manager at Tiugo Technologies specializing in TinyMCE rich text editor. Fred has held developer advocacy roles at industry giants such as Microsoft, Mozilla, Fitbit, and npm. He's spoken at hundreds of events globally and authored a book on personal branding for developers at Apress.

Jupiter Hadley
Pocketgamer, UK
Jupiter is a prolific indie game journalist. She covers thousands of game jams and indiegames on her YouTube channel, letting every game have a moment in the spotlight. Jupiter is also the Adept Games Wizard at Armor Games where she finds free-to-play, browser-based games to bring on board to their web portal and has been working from home for all of her adult life.

Goran Vuksic
syntheticAIdata, Sweden
Goran is the CTO and Co-founder of syntheticAIdata, a startup company dedicated to democratising the vision AI market by providing affordable and accessible synthetic data.
With over 20 years of work experience in IT and a deep understanding of various technologies, Goran worked as an engineering and technical manager, among other roles, developing IT strategies and solutions for well-known clients.
Goran is a tech enthusiast, he writes technical blog posts and he likes to share his knowledge at conferences, workshops, and meetups. He is recognised as Microsoft AI Most Valuable Professional (AI MVP), and his projects have been highlighted on websites such as Forbes, The Next Web, NVIDIA Developer, TechCrunch, and others.

David Burrowes
Split.io, USA
David Burrowes is a software engineer at Split.io with a decade of experience developing web applications for companies like Box, Delphix, and VMware. Having worked without feature flags, and with clunky in-house feature flagging frameworks, David is deliriously happy to have all of Split's capabilities at his disposal for every project. For fun, and to prove he’s more Star Trek than Star Wars, David likes to randomly quote large sections for Star Trek II: The Wrath of Khan.

Simon Stern
Apricot Studios, Canada
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.

Ariene Maiara
G2i, Brazil
Passionate about technology, innovation, and learning new programming languages, I have been working with software and web development for over 9 years. I have strong front-end and back-end skills. Currently working with React/React Native. I also have experience working with agile methodologies such as Scrum and Kanban.

Guilherme Vieira
Shopify, Canada
You might be familiar with HTTP GraphQL APIs. Did you know GraphQL does not have to be delivered over HTTP? We can use GraphQL in some different contexts. asynchronous queries, batch operations, user-provided scripts, WebAssembly, webhooks, and many more. We will explore how Shopify uses GraphQL in different contexts and how you can extend your current GraphQL schema beyond HTTP APIs.

Itai Hanski
Descope, Israel
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.

Kevin Gao
Descope, USA
Kevin is an engineer who is passionate about solving problems and learning new skills. When he's not speaking to customers or coding through sprints, you'll find Kevin either on the road driving fast up a twisty mountain road, reading historical fiction books, or looking for a new place in the world to travel to and explore.

David Woller
Rollbar, USA
David works as a post-sales Solutions Engineer at Rollbar, with a focus on customer enablement and custom solutions delivery. He is passionate about anything that combines technical learning with customer interaction, and is curious about finding ways to apply technology to improve the UX of everyday life. He has specific knowledge around software observability practices, and worked as a Professional Services Consultant at Sumo Logic before joining Rollbar in August. David earned a BS in Computer Science from Auburn University.

Pramod Shenoy
Cloudinary, USA
Pramod Shenoy is currently working as a Solutions Architect at Cloudinary. His interests align with his 8 years of experience at Akamai and Catchpoint in web performance and optimization, CDNs and monitoring digital experiences. Outside of work Pramod likes to hike, read blogs on tech, sports and stock markets.

Shubham Gautam
Headout, India
I'm Shubham, a Software Engineer at Headout who loves to experiment with different technologies and use them to create useful applications. I'm particularly fond of TypeScript, Web Performance, Frontend Tooling and I'm always ready to engage in a friendly debate on the topic of aliens' existence. As an engineer, I'm passionate about continuous learning and personal growth, and I always make sure to stay up-to-date with the latest developments in my field. Collaborating with my colleagues and learning from their expertise is something I enjoy. I'm always looking for ways to improve my own skills and contribute to the success of the team.

Shivani Poddar
Facebook, USA
Shivani Poddar is a Machine Learning Tech Lead for the Meeting Assistant team at Workplace, Facebook, leading the development of meeting assistants for making remote collaboration easier for work. Previously, Shivani built and launched the foundational machine learning and AI stack for Facebook Portal, spearheading product and engineering development across social graph technology for ML, deep personalization for a smarter calling experience.
She was also the first ever student at Carnegie Mellon to be funded by the Amazon Alexa Prize, where she and her team built a social chatbot, eventually deployed to tens of thousands of users through Alexa. During her time at CMU she also pursued research in the field of Natural Language Generation, Reinforcement Learning for chatbots and multimodal machine learning.
Outside of Work, Shivani has emerged as one of the leaders in talking about Artificial Intelligence and Machine Learning for Consumers as well as Enterprises. She has been a speaker at numerous conferences over the last 2 years covering topics such as – Diversity and Bias in AI, Future of Work, Immersive Multimodal Assistants. She is also a mentor for young aspirants looking to become the next innovators in the field, and regularly volunteers in resume building workshops, panels for hiring and Q&As on LinkedIn.

Sachin Dangayach
Applied Materials, India
Sachin is a Deputy Director at Applied Materials leading efforts in Data Science and Advanced Analytics with a team of data scientists, working to provide innovative solutions with a focus on AI enablement in various products and systems for the semiconductor equipment manufacturing industry.
He has over 15 years of diverse experience in the Industry around Software, Data Science and Artificial Intelligence.

Beril Sirmacek
Jonkoping University & the Owner of Create4D, Netherlands
Beril Sirmacek is a Dutch AI researcher. She received her PhD degree in Electrical and Electronics Engineering in 2009. Later she has worked with German Aerospace Center and pursued a habilitation degree with University of Osnabrueck.
She is an assistant professor at Jonkoping AI Lab and also leading her company create4D. Beril is passionate to use computer vision and AI algorithms for creating useful healthcare and earth care solutions.
Beril has taught a MSc course at the University of Augsburg in 2010, only on OpenCV. As a computer vision scientist and developer, she has been using it regularly for many years.




