Yevhenii B.

🚨 Complex React product? You probably don’t need another pair of hands – you need someone who can enter the codebase, understand what’s happening, and own the result.

✅ Top Rated Plus React Developer with 100% Job Success, $400K+ earned, 26 Upwork jobs, and 11,573+ hours.
✅ 10+ years as a React Developer and Frontend React engineer across SaaS, dashboards, POS, workflow systems, real-time interfaces, and production web apps.
✅ 2+ years with Node.js alongside deep Frontend React experience across APIs, authentication, databases, payments, and integrations.
✅ Built a task-management SaaS from scratch: architecture, authentication, organizations, Kanban workflows, reporting, GitLab, Plaid, and WebSockets.
✅ Reworked about 70% of legacy application logic on a workforce-management product while contributing to clock-in, geolocation, and photo-verification flows.
✅ Delivered enterprise data visualization for Jira with custom charts, linked state, drag-and-drop, PDF/image generation, TypeScript, and Redux Saga.

💪 Start with one real task and see how I work.

I’ve spent 10+ years as a React Developer on products where frontend development goes far beyond converting Figma into components. My strongest area is Frontend React, but I also work as a frontend-focused Full Stack JavaScript developer when features touch Node.js, APIs, data flow, authentication, or backend contracts.

On a high-load task-management SaaS, I worked from architecture to production: email and Google authentication, organization management, Kanban functionality, reporting, GitLab integration, Plaid flows, and WebSocket-based real-time updates across most of the interface. This React Developer work required understanding the whole product, not isolated UI tickets.

On a white-label power-plant platform, my Frontend React work focused on a large operational dashboard with reusable tables, modals, dropdowns, inputs, UI components, and Redux/Redux Toolkit flows built from scratch.

For an enterprise Jira product, I developed tile charts and expanded visualization controls such as pie-chart radius, legend positioning, titles, and descriptions. I also worked on an editor mode controlling multiple linked charts with React, TypeScript, Redux Saga, drag-and-drop, Victory Charts, react-pdf, and html-to-image.

On a workforce-management app, I reworked about 70% of existing logic and contributed to a clock-in system with shift time, geolocation, and photo verification. I’ve also worked on a restaurant POS product as a Frontend React developer, covering UI components, unit tests, ordering logic, custom orders, refactoring, documentation, and production bug fixing.