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!
Anton Zalaldinov
Anton Zalaldinov
Affirm, Canada
Anton is a Senior Software Engineer at Affirm, specializing in building robust and scalable JavaScript solutions. Outside of work, Anton actively contributes to the tech community by helping organize Vancouver JS, fostering developer learning and networking opportunities.
Robert Hostlowsky
Robert Hostlowsky
Instana, Germany
Currently, Robert Hostlowsky is working as a developer, coach and systems engineer. He published an online video course about developing a full-stack GraphQL application online-course. He loves DevOps culture on modern cloud infrastructure, uses the latest state-of-the-art web technologies, and loves how it plays nicely together at minimum effort and cost. He loves web technologies. Feeling being a part of the developer community he is co-organizing the JSCraftcamp, Munich.
Bob van Luijt
Bob van Luijt
Weaviate, Netherlands
Bob is CEO and co-founder of SeMI Technologies, the business created around the open-source vector search engine Weaviate. Besides SeMI and Weaviate. Bob is a frequent speaker on the topics of open source, digital technology, software business, and creativity. He has spoken at around 100 events on the aforementioned topics in Europe, the US, and Russia.
Rebecca Friedman
Rebecca Friedman
Shopify, Canada
I am a strong full stack developer, and a Ruby on Rails enthusiast. I'm passionate about formalized SDL processes, and clean, well-tested code. Having worked on the monolith that is the Words With Friends backend service at Zynga, I've architected, developed and deployed features that have been used by millions of concurrent users. I'm a huge supporter of University of Toronto, and an Arbor Award recipient. I guest lecture when I can, mentor students through the Alumni Mentorship program, and volunteer at numerous interview prep workshops, panels, and networking events for students.
Nick Teets
Nick Teets
StackHawk, USA
Nick Teets is a software developer and musician based in Denver. Nick found his passion for connecting people using technology after spending summers in the Sandhills of Nebraska establishing a multimedia journalism nonprofit. Through an interactive website, the project told the stories of the communities of the area with audio, video, photos, and text. This early foray in journalism taught him about the intersection of empathy, technology, and storytelling, and would lead him to a career in frontend software development, creating beautiful and accessible user experiences to connect people across the world.
Roy Tal
Roy Tal
Firefly, Israel
Roy Tal is a cloud and DevOps enthusiast who loves to build tool that will make infrastructure operations better for everyone. Today he is a team leader and founding team member at Firefly who are helping solve infrastructure drift in large-scale cloud operations. Before that he served as a backend developer at Dome9, building better security practices into cloud operations, that has been acquired by Check Point.
David Wang
David Wang
Sentry, USA
Software Engineer @Sentry
Erik van der Voort
Erik van der Voort
ING, Netherlands
Erik van der Voort has been working in Information Technology for over 25 years now. Starting as a developer, he moved to other roles like technical and functional designer and project- and portofolio-management. Quite some years ago, he discovered engineering was what made him really happy so since then he has been working in several Ops- and DevOps-roles within ING. For the past five years Erik is one of the engineers within the Fruitloops-team. This team of engineers mainly focuses on building and deploying front-end applications on a global scale within the company.
Sia Karamalegos
Sia Karamalegos
Clio + Calliope, USA
Sia Karamalegos is a freelance web developer and performance engineer. She's also an international conference speaker, writer, and Google Developer Expert in Web Technologies. She organizes the Eleventy Meetup and co-organizes the PerformanceObserver meetup.
Robert Mosolgo
Robert Mosolgo
GraphQL-Ruby, USA
Robert is a Ruby developer specializing in APIs, application design, and performance. Besides maintaining GraphQL-Ruby, he enjoys fermenting anything he can get his hands on.
Marco Gorelli
Marco Gorelli
Samsung R&D Institute UK, UK
Marco is a Data Scientist at the Samsung R&D Institute UK. Outside of work, he is a maintainer of pandas (data wrangling platform for Python widely adopted in the scientific computing community) and author of nbQA (code quality tool for Jupyter Notebooks). He holds an MSc in Mathematics and Foundations of Computer Science from the University of Oxford.
Matt Tanner
Matt Tanner
Tyk, Canada
Matt is a Product Evangelist at Tyk passionate about API management, development, and architecture. Matt has worked as a developer, tech lead, and architect for some of the largest financial institutions and insurers in Canada. He is always dabbling in the latest tech and applying this to his own ventures in technology.
Emily Kauffman
Emily Kauffman
Harvie, USA
Emily is a lead software engineer based out of Pittsburgh, USA. She's a lifelong learner, adjunct professor, and IoT enthusiast. Emily has a tech background in healthcare, robotics, and more recently, bringing local food to the masses at Harvie. In her spare time, you can find Emily working on her web agency startup, scuba diving, or trying her hand at landscape photography.
Tom Papiernik
Tom Papiernik
Buddy, Poland
As a developer advocate and technical writer at Buddy, Tom takes his love for communication and passion for technology and uses them to break down complex ideas into bites that everyone can swallow. Having worked directly on open-source projects, he is equally passionate about the front and the back-end - be it React, Go, or Kubernetes. In his spare time, he's a guitar-wielding amateur musician who dreams of recording a platinum album.
Ivan Krutov
Ivan Krutov
Aerokube, Russia
Software engineer with 10+ years of Java and Golang development experience. Working with large-scale test infrastructure during last 7 years. Maintaining a big Selenium cluster with 5000+ parallel browsers.
Alyona Galyeva
Alyona Galyeva
LINKIT, Netherlands
I encourage others to see different perspectives and constructively break the rules. Observe - Optimize - Learn - Repeat is my work and life motto. Next to it, I found my joy in building and optimizing end-to-end Machine Learning Systems. Principal Data Solutions Engineer @ LINKIT Organizer (volunteer) @ PyLadies Amsterdam WaiACCELERATE Tech Mentor (volunteer) @ Women in AI
Manoj Sureddi
Manoj Sureddi
Uber, USA
I'm a Staff Software Engineer at Uber with ten years of experience in software design and development. My expertise lies in building scalable systems, particularly in areas like Generative AI applications and config-driven automation.
Yama Anin Aminof
Yama Anin Aminof
MyPart, Israel
Yama is a data scientist at MyPart, an Israeli startup in the music industry, developing algorithms and researching lyrical and musical song features. In her spare time, she gives tech talks at conferences and meetups (Geektime Code, PyData Tel Aviv, IsraelClouds); and mentors a group of developers through their first steps in the data science world as a part of Baot - Israel’s largest community of senior female engineers and computer scientists. Yama has a B.Sc in mathematics and physics from Tel Aviv University where she also expresses her passion for music by playing the saxophone in the TAU Wind Band.
Karina Ionkina
Karina Ionkina
Bloomberg, USA
Karina Ionkina works as a senior software engineer on the Data Visualization team at Bloomberg, which builds and maintains multiple full-stack tools used by the company’s reporters and data visualization developers (see examples of these visuals at https://www.bloomberg.com/graphics). Outside of work, Karina likes to play tennis, paint, and sew. Karina earned her bachelor’s degree in computer science from Hunter College (CUNY).
Gil Eckstein
Gil Eckstein
Wix, Israel
Gil is a Performance Architect at Wix Viewer. For the past eight years, he has been helping build the application that powers Wix websites. As part of the Viewer team, Gil works on making it easy for anyone to create their dream website and for developers to extend the functionality of their Wix websites. With over 10 years of experience in software development, Gil started his career in networking and Linux but always had a passion for web development. For the past four years, he’s been leading the Viewer performance team, working on Wix websites performance and ensuring they load as fast as possible. In his free time, Gil likes working out at the park, playing basketball, and working on his personal projects—many of them built with AI ;)
Manasa Hari
Manasa Hari
Adobe Inc., USA
Manasa is a seasoned software engineer with 12 years of experience, specializing in event-driven architectures, data engineering, and scalable systems. She has worked for top companies like Splunk, Selector AI, Celcom, Taulia, and RingCentral, and recently spoke at Grace Hopper Celebration 2024, receiving a standing ovation. Passionate about empowering women in tech, she mentors aspiring engineers and shares her journey from intern to lead engineer. Manasa balances career growth with family, continuously striving to lead with emotional intelligence and technical excellence.
Mattia Lobertini
Mattia Lobertini
Datadog, Italy
I’ve spent over 15 years in tech, building products and leading engineering teams that scale. From writing code to shaping strategy, I love solving complex problems and turning ideas into real-world solutions. I believe great products are built by empowered teams, and I’m passionate about creating spaces where engineers can collaborate, innovate, and make an impact.
Maarten Van Hoof
Maarten Van Hoof
Essent, Belgium
By day, Maarten supports front-end teams at Essent with their Accessibility and Design System challenges. By night, he tinkers with the Web Platform.
Dmitry Soshnikov
Dmitry Soshnikov
Microsoft, Russia
Dmitry is a Microsoft veteran, working for more than 13 years. He started as a Technical Evangelist, and in this role presented on numerous conferences, including twice being on stage with Steve Ballmer. He then worked for 2 years as Senior Software Engineer, helping big European companies to start pilot digital transformation projects based on AI and ML. As Cloud Developer Advocate, Dmitry focuses on creating educational content and working with academic and research institutions. He is also an Associate Professor at MIPT, HSE and MAI in Moscow, a big fan of functional programming and F#, and a maintainer/primary developer of mPyPl library. In his spare time, Dmitry explores Science Art and Technological Magic, as well as performs Chinese tea ceremonies. He can be reached at soshnikov.com.