Mattias Petter Johansson
MPJ runs Fun Fun Function, a YouTube channel about programming. Prior to that, he has worked as a developer for 13 years, for companies such as Spotify, Absolute Vodka and Blackberry. His record for solving the Rubik's Cube is 88 seconds but he has never been able to do a single correct time estimation in his life.
Evgeny Kot Wrike
Evgeny used to work on .NET, Microsoft stack for quite a long time. He worked at Quest Software, after that he moved to Dell to work on frontend. He worked his way from CoffeeScript + Angular 1.0 to Dart + Angular 2.0. Currently Evgeny works at <a href="" target="_blank">Wrike</a>, a high-load SaaS application with very rich client code. Wrike team uses Dart and Angular 2.0 and aspires to be up-to-date with all modern trends in the web world.
Michel Weststrate
Tech Lead and Open Source evangelist at Mendix. Speaker, blogger and author of MobX, MobX-state-tree, immer and several other libraries.
Kirill Cherkashin Google
Originally from Moscow, now lives in NYC and works for Firebase. Kirill teaches Angular at Google and all over the world and organizes the largest Angular meet-up in the world — AngularNYC (as well as VueNYC and ReactNYC). When not programming, he enjoys dancing tango, reading books and having good conversations.
Princiya Sequeira smartHelios
FOSS enthusiast, loves food and JavaScript. Works at smartHelios. Outreachy Intern for Lightbeam with Mozilla.
Ari Lerner
Ari is the author of "ng-book" and has been teaching web development for a long time. He likes to speak at conferences and eat spicy food. He technically got paid while he traveled the country as a professional comedian, but has come to terms with the fact that he is not funny.
Maxim Salnikov ForgeRock
Maxim Salnikov is Oslo-based Web Full-Stack Engineer, a Google Developer Expert in Web Technologies & IoT, and a Microsoft MVP in Development Technologies. He architects complex web applications since the end of the last century and has extensive experience with all aspects of web platform focusing on the apps managing real-time data from IoT devices and Progressive Web Apps. Maxim is a founder and active contributor to two conferences: Mobile Era and ngVikings — Nordics' main conferences for mobile and Angular developers respectively. Also, he leads Norway's largest meetups dedicated to web front-end and mobile: Angular Oslo, Mobile Meetup, Oslo PWA. Maxim is passionate about sharing his web platform experience and knowledge with the community. He travels extensively for visiting developers events and speaking/training at conferences and meetups around the world.
Roman Dvornov Avito
Technical lead of Frontend Architecture unit at Avito. Author of basis.js, CSSTree, Component Inspector, rempl, maintainer of CSSO and others. The researcher, evangelist for web standards, inspirer, critic and speaker. Most interested in the web technologies, tooling, architecture and related subjects.
Kamil Myśliwiec NestJS
Kamil Myśliwiec is an enthusiastic software engineer truly passionate about the web technologies. Creator of NestJS, open source evangelist, currently working as a Full-Stack developer with variety of languages, mainly focused on the web-related things.
Thomas Watson Elastic
Thomas Watson is a computer programmer, public speaker, and open source hacker. He works on Application Performance Monitoring at Elastic, the company behind Elasticsearch, Kibana, and Logstash. Thomas has published hundreds of Node modules and mad science projects, he is a Node.js Core member, and a part of the Node.js Diagnostics Working Group at the Node.js Foundation.
Illya Klymov JavaScript.Ninja
14 years of JS everywhere: from microcontrollers to rendering video in the cloud. More than 5 years of educational experience (at two universities and Illya's own courses), Ph.D. in Computer Science (field of interest: System Analysis and Theory of optimal decisions). Coach at Kottans.Org project. Owns and runs small outsourcing company WookieeLabs, specializing in JS-only solutions.
Sergey Kriger Robotise
Sergei fell in love with web development back in high school. He got a degree in Information Technologies at the University of Helsinki and has been spending his professional career working for web design studios in Helsinki and Munich. Sergei's focus areas are JavaScript development, UX and accessibility.
Stas Kurilov JetBrains
Stas Kurilov

For the last few years Stas has been developing frontend tools. He has the most experience with webpack, for which he's built a loader and a plug-in for work with SVG, a documentation generator, and even a banner rotator. Stas knows a lot about inner workings of this complex and powerful tool.
Alexander Korotaev
Frontend developer at Tinkoff, supports an application for legal entities and internal service. He's also one of the leaders of SPB Frontend community and Drinkcast podcast. He's into visualizations and games.
Dmitry Patsura LOWL
Developer with 10 years of experience, developed a lot of projected in open source, from a static analyzer — PHPSA, to the TypeScript compiler called StaticScript. Leading the most obscure podcast in the entire frontend — [UnderJS]( "UnderJS") Related open source: - [PHPSA]( — static analyzer on PHP for PHP; - [GHubber]( — mobile client for Github powered by React Native; - [StaticScript]( — language on top of TypeScript as frontend, and LLVM framework as backend. Dmitry also was a contributor to Zephir Language & Phalcon framework.
Alexey Zolotykh EPAM
Alexey codes in JavaScript since 2007. Previously he worked as a typesetter (more than 100 sites on his list). He used jQuery, Backbone.js, Angular 1, Angular 2, React, Ext JS, PolymerJS. He likes user interfaces and coffee.
Victor Grishchenko
Victor graduated from the mathematics and mechanics faculty of the Ural State University (USU). He worked at the Bank of Russia, Yandex, TU Delft, Realm, JetBrains. Specializes in real-time data sync. Creator of RON (Replicated Object Notation).
Theodore Vorillas Panther Labs
Theodore is a software engineer at Panther Labs. He recently started researching A11Y and he realized he could combine IoT and JavaScript to help visually impaired people. He loves FOSS, coffee, drones, woodworking and DIYing all the things.
Viktor Vershansky DataArt
Node.js consultant developer. JavaScript spicy practice user and Evangelist. Former Project Manager and Systems Analyst. Former university lecturer at Economy. Musician, dreamer, Teapot System Administrator.
Egor Malkevich
A self-taught specialist from Minsk. It's a long story how Egor went down to the IT. His roadmap wasn't row. He started doing small sites and games, upgraded to consulting, designing microservices ecosystem and frameworks for company usages in a wide range of internal products. Now Egor is an active member of local developers community in Minsk and participates in hackathons and meetups. He also took part in several startups. He extends his communication and networking skills.
Erik Rasmussen
American expat settled in Spain, JavaScript aficionado, passionate about forms for some reason. Most GitHub stars in all of Spain, because that matters.
Artem Kunets Align Technology
Artem Kunets

Artem is developing a 3D application in Align Technology and researching the possibilities of WebGL in browser. In his free time, he develops his rendering engine. He believes that 3D graphics gives developers unlimited opportunities to implement their ideas.
Marko Letic AVA
Marko Letic is a front-end engineer, lecturer and data visualization scientist. He is currently connected with a Berlin-based company named AVA where he is working on a platform that combines big data, pattern recognition and artificial intelligence to take the safety of individuals, organizations, cities, and countries to a whole new level. His main role is to create a contextual analysis of the processed data through a web-based client application. Marko is a long time member of DAFED, a non-profit organization that is working on networking and educating the IT community. He holds a MSc degree in Computer Science and is pursuing his PhD in data visualization. He sometimes writes fiction novels that probably will never get published as he spends too much time coding.
Isa Silveira Work&Co
Isa is a software engineer building digital products at Work&Co. Throughout her career, she has worked with scientific research at COPPE, one of Brazil's most prestigious research organizations, and nowadays works both on back and front end applications. Isa has worked on products from world class companies like the Stanford University, Planned Parenthood and Virgin. She never turns down a good talk and a beer. In her free time she thinks about how she can make the world a better place while playing with her dogs and practicing slalom skating.
Sebastian Golasch Deutsche Telekom
Sebastian works as a Specialist Senior Manager Software Developer at Deutsche Telekom. After some time developing backend applications with Java and PHP he became a citizen of the JavaScript world. Recently he's getting his hands dirty with Python and Rust. For the last seven years Sebastian tries to improve our lives, working on Deutsche Telekom's Smart Home platform Qivicon. Famous last words: "If I would've wanted to work in 'Enterprise', I'd have joined Starfleet…"
Vyacheslav Shebanov VK
Engineering manager for messaging service on VK platform. Likes functional programming languages. Extremely interested in type theory and adjacent subjects.
Bartosz Pietrucha
Bartosz Pietrucha is a full-stack software engineer, software consultant and founder of For the last couple of years he has been working with clients from Great Britain, Switzerland, Poland and Finland. Having achieved OOP proficiency with Java, he delved into JavaScript programming and found front-end world extremely fascinating. He wants to share his knowledge via trainings and workshops as it gives him great dose of fulfillment. He speaks at international conferences and gives workshops across Europe. He was teaching advanced front-end technologies in Poland, Israel, Great Britain, Finland, Romania, Tunisia and Colombia.
Ekaterina Pavlenko Lawgeex
Ekaterina Pavlenko

Ex-member of HolyJS program committee, seven years in frontend, four years in Angular, two years out of Russia. Moved to Israel and now coding surrounded by palm trees.
Vsevolod Rodionov Startup
Lead software engineer.
Mikhail Poluboyarinov SEMrush
Full-stack developer, in development since 2004. Organizer of PiterJS and IT Global Meetup.
Dmitry Makhnev JetBrains
He was a developer at JUG Ru Group. LongestJS organizer. He has been in web development for more than 10 years and often wrote HTML on Java. Loves good talks, Dadaism, tests, and Dart.
Andrey Nagikh Inetra
Started working with the web in the last century. Used to be a full stack developer for quite a long time. In 2013 switched to the frontend. Now develops peer-2-peer system of video delivery in the browser using Node.js, MSE, WebSocket, WebRTC and WebAssembly.