Senior React UI Engineer — Data-Driven SPA Expert

Luxoft Poland; Kraków; On-site; PLN 180,000 - 260,000; Full time

Job summary

Luxoft Poland is seeking an experienced Front-end Engineer to develop a high-performance workflow system and participate in a React-based SPA and reusable components library. You will collaborate closely with business stakeholders and backend developers in Kraków to discuss domain changes and drive improvements.

The role emphasizes ownership, proactive improvements, and participation in design discussions, with a focus on delivering data-dense, interactive UIs within complex business workflows.

Qualifications

• 8+ years of practical experience in front-end development with production React apps.
• Strong RESTful API integration and ability to communicate requirements to backend teams.
• Two complex, user-facing applications delivered to production with rich interactive UIs and data-dense interfaces.
• Deep understanding of component design, state management, performance, accessibility, and maintainable code.
• Experience with testing practices (unit, integration, end-to-end) and CI/CD (GitLab CI/CD).
• Ability to evaluate libraries and architectural patterns; PoC development experience.
• Excellent problem-solving, clean coding, and collaboration in Agile environments.
• Experience using agentic LLMs to support development.

Responsibilities

• Create new components for the business-driven library to represent client data.
• Collaborate with business stakeholders, backend developers, UX designers, and QA professionals.
• Master state-of-the-art technologies and the domain; solve challenging problems elegantly.
• Share knowledge across the project team and contribute to software quality in each sprint.

Skills

React

REST API

UI collaboration

State management

Testing (Jest)

CI/CD

Agile/Scrum

Performance optimization

Accessibility

Maintainable code

PoC development

LLM integration

Tools

Cypress

Figma

Webpack

Vite

Job description

Luxoft Poland is seeking an experienced Front-end Engineer to develop a high-performance workflow system and participate in a React-based SPA and reusable components library. You will collaborate closely with business stakeholders and backend developers in Kraków to discuss domain changes and drive improvements.

The role emphasizes ownership, proactive improvements, and participation in design discussions, with a focus on delivering data-dense, interactive UIs within complex business workflows.