Senior React & Next.js Frontend Engineer

Uvation, Inc.; Polska; On-site; PLN 180,000 - 240,000; Full time

Job summary

Uvation, Inc. in Poland is seeking a skilled Frontend Engineer to build reliable, responsive user interfaces from approved designs and API contracts. You will deliver features independently, diagnose browser issues and contribute maintainable, well-tested code.

You will work with React, Next.js and TypeScript, focusing on performance, accessibility and component reusability. A strong understanding of modern front-end tools, testing with Vitest or Jest, and collaborating with design systems will

Qualifications

• Strong experience with React, Next.js, TypeScript and hooks-based component development.
• Good understanding of component lifecycle, effects, memoisation and techniques for preventing unnecessary re-renders.
• Experience with Next.js, Vite or a comparable modern front-end build framework.
• Experience with Zustand, Redux Toolkit or a similar state-management library, including correct and efficient use of selectors.
• Strong HTML5, CSS3 and SCSS skills, including responsive layouts, semantic markup and scoped styling.
• Working knowledge of accessibility fundamentals, including keyboard navigation, focus management and appropriate ARIA usage.
• Experience using a design system such as IBM Carbon, Material UI or an equivalent component library.
• Ability to implement interfaces accurately from Figma designs or other visual specifications.
• Experience integrating REST APIs and handling loading, error, empty and partial-data states.
• Experience with polling, request cleanup and defensive handling of incomplete or unexpected API responses.
• Working knowledge of environment configuration, package management and front-end build processes.
• Experience writing unit and component tests with Vitest or Jest and React Testing Library.
• Strong browser DevTools debugging skills and experience resolving cross-browser issues.
• Working knowledge of Git branching, pull requests, code reviews and collaborative delivery workflows.
• Ability to write clean, reusable and maintainable front-end code.
• Good knowledge of secure client-side development, including environment variables and safe logging.

Responsibilities

• Build reliable, responsive user interfaces from approved designs and API contracts.
• Deliver features independently, diagnose browser issues and contribute maintainable, well-tested code.
• Collaborate with design systems and ensure accessibility and performance best practices.
• Write tests and participate in code reviews to maintain code quality.

Skills

React & Next.js

TypeScript

Hooks-based components

Performance optimization

Accessibility basics

Design system usage

REST API integration

Testing (Vitest/Jest, RTL)

Git workflows (PRs, reviews)

Cross-browser debugging

Secure client-side development

Environment/config management

Code maintainability & reusability

Tools

Next.js

Vite

Zustand/Redux Toolkit

Job description

Uvation, Inc. in Poland is seeking a skilled Frontend Engineer to build reliable, responsive user interfaces from approved designs and API contracts. You will deliver features independently, diagnose browser issues and contribute maintainable, well-tested code.

You will work with React, Next.js and TypeScript, focusing on performance, accessibility and component reusability. A strong understanding of modern front-end tools, testing with Vitest or Jest, and collaborating with design systems will