~10 crypto trading and fintech platforms

- Built trading charts, order books, dashboards, user profiles.

- Worked with SSR/SSG, performance optimization, and security.

- Migrated a large crypto platform from React to Next.js, improving SEO and indexing speed.

- Implemented server-side translation storage with admin panel controls, removing the need for CMS migration.

- Improved key page load times by 20–30%.

Stack: React, Next.js, TypeScript

Residential communities platform (Web + Mobile), enterprise travel-expense solution, Chrome extension

- Built reusable UI components and business logic.

- Integrated with REST and GraphQL APIs, optimized performance, and handled real-time updates.

- Covered critical parts with unit tests (Jest, React Testing Library).

- Implemented screen capture and fragment cropping in Chrome extension, improving support workflow.

- Integrated with REST services and optimized performance.

Stack - React, TypeScript, Next.js, Chrome API, GraphQL

Web system for carrier registration and licensing

- Developed UI for forms, tables, document workflows.

- Integrated frontend with government APIs.

- Supported existing pages and improved validation.

- Improved large table rendering speed by ~30%; reduced form-related errors by ~15%.

Stack - React, Redux, ExtJS

Startup — job-search social network

- Fixed UI bugs and implemented small frontend features.

- Supported existing pages and improved validation.

Stack - React, ASP.NET MVC, MS SQL