Middle Frontend Developer - React

About the Position

Middle Frontend Developer - React

We are seeking a Middle Frontend Developer - React to join our team working on a customer onboarding and self-service portal for a B2B SaaS product. This role involves developing user-friendly interfaces and ensuring seamless interactions for our users.

Responsibilities

• Develop React components for onboarding flows, profile pages, request forms, and customer dashboards.
• Implement multi-step forms with validation, draft persistence, file upload states, and clear user feedback.
• Integrate frontend pages with REST APIs using TanStack Query and standard error handling patterns.
• Work with responsive layouts, reusable UI components, accessibility, and design consistency.
• Fix frontend bugs, improve UX details, and support regression testing before releases.
• Write basic unit/component tests for important UI logic.
• Participate in code reviews, sprint planning, and refinement sessions.

Requirements

• 3+ years of commercial frontend development experience.
• Good practical experience with React and TypeScript.
• Experience with forms, validation, API integration, loading states, and frontend error handling.
• Familiarity with React Hook Form, Zod, Yup, Formik, or similar tools.
• Understanding of reusable components, props, hooks, routing, and frontend project structure.
• Basic experience with testing tools such as React Testing Library, Vitest, or Jest.
• Strong spoken English - Upper-Intermediate level or higher, suitable for daily work with international teams.

Nice to Have

• Experience with TanStack Query, Zustand, or Redux Toolkit.
• Experience with file upload flows and document management interfaces.
• Experience with Playwright or Cypress.
• Experience with B2B portals, onboarding platforms, fintech, HR tech, or SaaS products.

We Offer

• Opportunity to grow as a React developer on a modern product with practical business workflows.
• Remote or hybrid work options.

About the Company

Infinity Technologies is a DBA name for Terrapps ltd, located in London, England, and Tallinn, Estonia. We are committed to GDPR compliance and offer a range of services to turn your project into a success story.

Apply

If you want to grow as a React developer on a modern product with practical business workflows, we would be glad to hear from you. Send us your CV and we will contact you to discuss relevant opportunities.