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!
Lena Reinhard
Lena Reinhard
Executive & Leadership Coach, Germany
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.
Jeremias Menichelli
Jeremias Menichelli
Storyblok, Spain
Over a decade building seamless web experiences. Web accessibility advocate. Technical lead behind award-winning sites. Design system tinkerer. Community and event ambassador.
Vitali Shchur
Vitali Shchur
Check Point Software, Georgia
I am an experienced Quality Assurance (QA) engineer with over 10 years of experience in testing web applications, mobile apps, and desktop platforms (Windows, macOS, iOS, Android, Linux). I contributed to the growth of a startup from 25 to 250 employees, leading to its sale for $0.5 billion. I have worked at companies like Check Point Software and Perimeter 81, focusing on testing, creating test cases, analyzing specifications, and cross-platform testing. My extensive background spans product and outsourcing companies in cybersecurity, fintech, and education. I am also eager to share advice on career development in QA.
Marco Pierobon
Marco Pierobon
Thoughtworks Inc, Spain
Marco Pierobon is a seasoned Developer at Thoughtworks with well over a decade of experience in designing and implementing distributed applications. Specializing in cloud native technologies, he has led cross-functional teams in transitioning from project-based to product-oriented approaches. Marco has successfully orchestrated the migration of over 15 legacy systems to modern web-based platforms, significantly enhancing system scalability and performance. An active contributor to the tech community, he has presented at industry and tech conferences alike. Marco is passionate about driving innovation and efficiency in software development, aligning with the latest trends in cloud computing and AI integration.
Oleksandr Tryshchenko
Oleksandr Tryshchenko
Personio, Netherlands
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 Russell
Alex Russell
Microsoft, USA
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.
Joban Singh
Joban Singh
Microsoft, India
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.
Kat Kmiotek
Kat Kmiotek
Zoopla, Scotland
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.
Matt Seccafien
Matt Seccafien
DeepL, Germany
Senior Front End Developer at DeepL, working on Design Systems
Dhrubesh Deb Sharma
Dhrubesh Deb Sharma
Allganize, India
Frontend Developer at Allganize, Host at The Junior Developer Podcast.
Nancy Choi
Nancy Choi
Millennial Executive, Netherlands
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.
Tom Northall-Little
Tom Northall-Little
Canva, Australia
Tom is a Senior Software Engineer at Canva, based in Sydney. He has worked on Canva’s Apps SDK for the last few years, working across the stack to deliver the APIs that Canva’s growing developer ecosystem loves.
Ariene Maiara
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
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.
Idan Rozin
Idan Rozin
AI21 labs, Israel
Idan Rozin is a full-stack developer at AI21 Labs with a focus on startups and over 7 years of experience. A React and Node enthusiast, Idan is deeply passionate about AI and technology, continuously exploring innovative solutions in the tech landscape.
Kevin Gao
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.
Shivani Poddar
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
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
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.
Karen Huaulme
Karen Huaulme
MongoDB, USA
As a Principal Developer Advocate at MongoDB, Karen Huaulmé (pronounced “You-Old-Maid” - but with no d’s) develops and presents applications to help developers unleash their creativity across all aspects of data and technology. Leveraging her past experience as a Solutions Architect for some of MongoDB’s most demanding customers, Karen loves to trigger that “aha” moment in the minds of developers - when they recognize a better path to simplify, enhance, and accelerate their projects in ways they never thought possible. Prior to MongoDB, Karen spent most of her career working with video game developers as a Solutions Architect and Integration Engineer at Nvidia, Amazon and Twitch. In her free time, Karen embarrasses her 2 kids, spoils her dog, and feeds her addiction to adventure travel - not necessarily in that order.
Senna Parsa
Senna Parsa
GitHub, Netherlands
Senna is a Solutions Engineer at GitHub supporting our customers the EMEA MidMarket segment. She has a background in web application, iOS development, and accessibility. Originally working out of the HQ in San Francisco, she’s been working with GitHub customers for three years, passionate about empowering developers and helping organizations as they go through cultural and digital transformations.
Michael Hirschberg
Michael Hirschberg
Couchbase, Germany
Solutions engineer with a lot of operation experience in Couchbase.
Selam Moges
Selam Moges
Software Engineer, USA
I'm Selam and I'm currently a software engineer. I've always been fascinated by technology and its potential to make our lives better and more equitable. As an advocate for diversity, equity, and inclusion (DEI), I'm committed to making tech a come inclusive place for everyone. I'm passionate about computer ethics and ensuring that technology is developed and used in ethical and responsible ways. I believe that technology can be a powerful force for good, but only if we approach it with a thoughtful and ethical mindset.
Samiul Huque
Samiul Huque
Bloomberg, USA
Samiul Huque is a senior software engineer at Bloomberg, where he works on the company’s Instant Bloomberg (IB for short) chat tool. He works across the stack, building full-stack products where he primarily uses a combination of JavaScript/TypeScript and Python. Outside of work, Samiul plays tennis, competes in MMA, and eats his steak medium rare. Samiul earned his bachelor’s degree in economics and mathematics from the University of Richmond.