Contact information

You can get this candidate's contact information from https://www.work.ua/resumes/20920816/

Work experience

Senior Frontend Developer

from 11.2025 to 11.2026 (1 year)
Gambling / Sports Betting, Дистанційно (IT)

Owned frontend development of two sports betting administration applications, delivering new features and modernizing legacy codebases.

Initiated and led incremental migrations from React 16 to React 19 and React Router 5 to 6, planning dependency upgrades and managing compatibility risks.

Diagnosed and resolved a long-standing, hard-to-reproduce issue in a real-time betting interface, tracing the root cause to unstable callbacks in a virtualized list.

Introduced a customized Feature-Sliced Design architecture in collaboration with the CTO and modernized legacy MobX state management.

Documented architectural decisions and established project-specific development and testing guidelines using Claude Code.

Frontend Developer

from 04.2022 to 10.2025 (3 years 7 months)
Gaming Client, Дистанційно (IT)

Developed React and TypeScript features for a large-scale player support platform, collaborating with designers on a major product release and adopting a shared Storybook component library.

Designed and implemented a complex reusable modal component with breadcrumb navigation, replacing nested dialogs and improving user workflows.

Extended a JSON-driven page builder with new functionality, adapting its architecture to support complex React components.

Investigated production incidents using Grafana, AWS CloudWatch, and Snowflake, identifying backend bottlenecks and collaborating with backend engineers.

Full-Stack JavaScript Developer

from 08.2019 to 03.2022 (2 years 8 months)
Lezzoo, Дистанційно (IT)

Owned end-to-end development of an administrative platform, collaborating directly with the client's CTO on requirements and technical decisions.

Built reusable React and TypeScript UI components using Material UI, Ant Design, and Storybook.

Developed backend APIs using Node.js, Koa.js, and Express.js, and contributed to a NestJS-based service.

Implemented real-time functionality using Socket.IO, Mapbox GL, and OneSignal.

Integrated Stripe, Mailgun, and Cloudinary, and maintained API documentation with Swagger.

Knowledge and skills

• React
• Node.js
• React Query
• Storybook
• Next.js
• Material UI
• Ant design
• Redux Toolkit
• MobX
• AWS
• TypeScript
• NestJS
• Express.js
• Socket.IO
• PostgreSQL
• MySQL
• MongoDB

Language proficiencies

• English — above average
• Ukrainian — fluent