Vladimir Mosyaykin

Lead Frontend Developer

vladimir.mosyaykin@gmail.com
Split, Croatia

Software Engineer focused on Frontend with a decade of extensive experience building feature-rich web applications with real-time capabilities, managing and growing teams, and mentoring developers.

Skills

Javascript (Typescript · React · Remix) · HTML · CSS (SASS) · SQL · Node.js

Experience

Head of Frontend Development

Webinar Group

July 2022 - August 2023 / Remote

Webinar Group, rebranded as MTS Link in 2023, is the largest web-conferencing software company in Russia. It hosts 5 million web meetings and webinars annually, with 30 million participants.

Tripled the Frontend team to meet the company’s growth requirements.
Mentored developers to become Leads and delegated management duties to them, which allowed me to focus on strategic planning and address specific development bottlenecks.
Collaborated with the design team to overhaul and refine the existing UI kit, streamlining the design handover process.
Launched an alpha-version of a corporate messenger with a scalable architectural foundation based on Feature-Sliced Design.

Frontend Team Lead

Webinar Group

May 2016 - July 2022 / Moscow, remote

Led a team that grew from 4 to 11 frontend developers to build, launch, and maintain several highly-interactive collaborative products.

Webinar 3.0

Modernized the core product over several iterations, migrating to React and completing the transition from Flash to WebRTC.
Worked with PMs and other Leads on refining the team processes, reducing the average feature time-to-market by 15%.
Optimized the frontend to handle 5000 and then 10000 webinar participants, removing key blockers for further increase.
Reduced the LCP metric of the main app screen to under 3 seconds, achieving this through best practices, including code splitting and leveraging a CDN.
Built a connectivity analyzer service using Node.js, enabling Support Engineers to provide better service for the customers.

Webinar Meetings

Launched a workplace meeting-focused version of the core product in under 3 months to address the demand caused by the pandemic.
Working with the media team, increased the maximum number of meeting participants from 10 to 30 and then to 100, while maintaining browser performance.
Implemented product-specific code instrumentation, increasing the success rate for joining video conferencing from 80% to 95%.

Webinar Desktop

Developed a desktop version of the Meetings product, based on Electron, and targeted at customers with restrictive IT policies.
Fully automated the app build process for Windows, macOS and Linux, eliminating the delay between development and testing.

We.Study

Coordinated outsource and in-house teams to build an online course platform.
Incorporated security measures in line with OWASP best practices to allow safe hosting of user-provided web content, including javascript files.

Senior Frontend Developer

Webinar Group

June 2015 - May 2016 / Moscow

Built and launched a new and updated version of the company’s core product with support for WebRTC video conferencing.

Full Stack Developer

Webinar Group

August 2013 - June 2015 / Moscow

Migrated the company’s video conferencing product from Java and Flash to PHP (Symfony) and HTML5/JS (Knockout.js) with a team of 5, maintaining the existing design.
Personally responsible for modernizing key modules, including in-conference chat, which resulted in improved performance and enhanced user experience.

Personal Projects

Tournament of Towns

Full Stack Development and UX Design

International Mathematics Tournament of Towns is a mathematical competition for school students originating in Russia. The contest has participants from over 100 cities in many different countries.

In my spare time, I built several iterations of the Tournament’s online system for participants, jury and organizers, using this project as a platform to learn and apply new technologies, such as GraphQL and Remix.
Designed and developed a web-based contest system for the Tournament’s online version, handling more than 5000 simultaneous participants on a 4 vCPU server.

Languages

English (proficient) · Russian (native)