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!
Marissa Masangcay
Marissa Masangcay
Cloudinary, USA
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.
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.
Innokenty Bodrov
Innokenty Bodrov
Finom, Portugal
I've been working as a business and system analyst on a significant amount of projects in different industries: government services, retail, manufacturing, telecommunications, energy, EDI, and fintech. And it grants me an outstanding possibility to improve both sides of the process: how it works from a business perspective and how it could be automated or digitalized with IT capabilities. No matter where I’m working, I passionately follow my value of trustful relationships. For me, that means honest feedback, business transparency, a strong brand personality and attentiveness to details.
 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.
David Chicaiza
David Chicaiza
Ataccama, Czech Republic
David Chicaiza is a senior front-end engineer from Bogotá, Colombia, and a React, NodeJS, and TypeScript enthusiast. He is currently based in Prague, creating data management solutions at Ataccama. David brings a blend of technical skills and public engagement to his role as an MC. When he's not working on software solutions, you might find him making music, playing chess, or traveling.
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.
Gunj Joshi
Gunj Joshi
stdlib, India
Mentorship available
Gunj Joshi is a Core Contributor at stdlib, a standard library for JavaScript and NodeJS. He has also worked as a Quantum Research Intern at IBM, has been a Google Summer of Code Contributor & Mentor and has also worked on stdlib at Quansight.
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.
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.
Jannik Sommerfeld
Jannik Sommerfeld
Team One Developers GmbH, Germany
As a software developer with a rich background in successful agile projects, I value constructive, harmonious, and proactive communication. I enjoy the opportunities and freedoms that the ECMAScript world offers. At the same time, I embrace self-chosen guidelines that we can establish through the use of TypeScript. I am 30 years old, father of a new born and I am excited to teach and to learn.
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
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.
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.
Shane Ketterman
Shane Ketterman
Toptal, USA
The scripted part: Experienced and results-driven Customer Success Manager with a proven track record of driving customer satisfaction, retention, and revenue growth. I am passionate about building strong relationships with customers and helping them achieve their goals based on outcomes-based thinking and maximizing the value they derive from products or services. Unscripted: I am an empath, product nerd, people nerd, and a consultant/coach. My background in business, marketing, tech, and SaaS, allows me to bring a lot of great ideas and discussion to the CSM table. One can often find me learning AI, metrics, psychology, and trying to continually answer the question, "what can CSMs do to help customers solve real problems while also seeing future value in a product or service?"
Rebecca Warren
Rebecca Warren
StackHawk, USA
I build product marketing and sales enablement organizations at technical start-ups and scale ups. I have experience in cybersecurity, DevSecOps, computer networking and MarTech.
Vijay Ramesh
Vijay Ramesh
Demandbase, USA
Vijay has been building software professionally for 20 years, focusing mostly on full-stack and backend development for the first half of his career before transitioning into data engineering and applied data science roles, and eventually into engineering leadership. Today at Demandbase he heads up two of the main application groups - supporting Account Based Experience and Advertising - as well as leading the Core and Shared Services platform team.
Michael Lukaszczyk
Michael Lukaszczyk
GraphCMS, Germany
Founder and CEO, GraphCMS
Lenny Burdette
Lenny Burdette
Apollo, USA
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.
 Leandro Fernandez
Leandro Fernandez
Meta, UK
Leandro Fernandez is an Engineering Manager at Meta, London, with 16 years of experience as an engineer/manager in big tech, like Meta, Uber and Dell Technologies. He has a successful track record of supporting high performing teams of software and machine learning engineers. Some of the cool projects that he launched in the past include Uber's Audio Recording and Record My Ride, and Meta's automated data removal infrastructure.
Johan Eliasson
Johan Eliasson
Nhost, Sweden
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.
Adam Jahr
Adam Jahr
Vue Mastery, USA
Adam Jahr is the co-founder of Vue Mastery, the ultimate learning resource for Vue developers and the biggest financial backer of the Vue framework. As an e-learning educator, he has taught hundreds of thousands of developers worldwide and teaches live at conferences across the globe. Adam is a proud Vue.js Community Partner. When he isn't teaching Vue, he enjoys creating interactive art installations.
Sota Ohara
Sota Ohara
RENDEZ-VOUS, Japan
Senior Software Engineer at CureApp inc, & CTO at RENDEZ-VOUS.
Filip Voska
Filip Voska
Infinum, Croatia
Filip graduated from Faculty of Electrical Engineering and Computing, University of Zagreb in 2017 and has started his careers at Infinum as JavaScript Engineer. Over the years, FIlip gathered knowledge of various Frontend topics, with focus on Angular, and became Angular Lead Engineer. Some more time passed and Filip started focusing more on soft-skills and became JavaScript Team Lead at Infinum, while still continuing to do Angular development and being involved in architecture-level decision-making. As for FIlip's personal interests and hobbies, he likes PC/Nintendo Switch Gaming, messing around with HiFi gear and mehcnical keyboards, and being a loving husband & father to his wife & child.