Looking for a job

Сергей Красносельский

@0007943

Message

Frontend Developer who built creator marketplace dashboards and real-time features at Continuumua.

Ukraine

Message

At Continuumua, I built complex dashboards and developed live chat and live-streaming features for a creator marketplace. I also worked on large marketplace applications with React, TypeScript, and Remix, including server-rendered functionality, localization, and automated testing.

At RockLab, I developed a social and dating platform with real-time chat and subscription features, and independently built the frontend for an AI-powered virtual receptionist. Earlier, as a freelance frontend developer, I created responsive websites, landing pages, and small e-commerce applications.

Experience

Work history, roles, and key accomplishments

Frontend Developer

Continuumua

Sep 2024 - Sep 2026 (2 years)

Worked in a fully English-speaking international product team, building complex dashboards, real-time features, and migrating legacy websites to modern React applications. Improved frontend performance, increasing Lighthouse Performance score from ~60 to 100.

React TypeScript MobX Material UI REST APIs WebSockets I18next Jest React Testing Library JavaScript PHP Laravel HTML CSS Tailwind Remix Vitest POEditor Git

Frontend Developer

RockLab

Feb 2023 - Sep 2024 (1 year 7 months)

Developed web applications including a travel planning platform, a social and dating platform with real-time chat, and an AI-powered virtual receptionist platform. Implemented authentication, Stripe payments, and complex UI features.

React Chakra UI REST APIs Next.js TypeScript Apollo GraphQL Apollo Client Redux WebSockets Stripe

Freelance Frontend Developer

Self Employed

May 2022 - Feb 2023 (9 months)

Developed responsive landing pages, websites, and single-page applications for individual clients. Built small e-commerce applications with product catalogs, filtering, and shopping-cart functionality.

JavaScript React HTML5 CSS REST APIs