Senior UI Engineer

Luxoft Poland Krakow

Project description

We are developing a high-performance workflow system for the client's onboarding domain. This system focuses on capturing various types of data from clients based on JSON schema. The project involves extending the workflow system functionalities, including a single-page application (SPA) written in React 17+ and a business-oriented components library that is reused by multiple applications to capture data. The UI team and most of the project team is co-located in Krakow - it means effective and close collaboration. We are looking for a proactive individual who can suggest improvements to the library and the application and take ownership of their work. This person will collaborate with the business team and backend developers to discuss domain-level changes and will not shy away from participating in discussions.

Responsibilities

• Develop JavaScript code for a large-scale, rich internet and modular application using React 17+.
• Create new components for the business-driven library to represent client data.
• Collaborate closely with business stakeholders, server-side developers, user experience designers, and quality assurance professionals.
• Master state-of-the-art technologies and a complex business domain.
• Solve challenging problems in elegant ways.
• Share knowledge across the project team.
• Contribute to the quality of software delivered in each development iteration.

Skills

• Must have

• At least 8+ years of practical experience in front-end development, with a proven track record of long-term engagements building and delivering production React applications.

• Advanced proficiency in React (17+), modern JavaScript (ES2015+), HTML5, and clean, component-based architecture; experience with Redux is a plus.

• Solid understanding of RESTful API integration patterns and clear communication of requirements to backend teams.

• At least two complex, user-facing applications successfully delivered to production, ideally involving rich interactive UIs, state-heavy workflows, or data-dense interfaces.

• Practical, hands-on experience with styling at scale using CSS3/Less (not being afraid to style applications), responsive design, and cross-browser compatibility.

• Strong grasp of front-end engineering fundamentals: component design, state management, performance optimization, accessibility, and maintainable code.

• Solid understanding of testing practices: unit, integration, and end-to-end testing of UI applications (e.g., Jest, React Testing Library, Cypress), plus CI/CD pipelines (e.g., GitLab CI/CD).

• Ability to evaluate trade-offs and select appropriate libraries, frameworks, and architectural patterns for a given problem.

• Experience with PoC development and iterating quickly based on results.

• Excellent problem-solving abilities, clean coding skills, and strong attention to detail.

• Familiarity with Agile development practices (Scrum, Kanban, etc.) and excellent communication and collaboration skills.

• Experience using agentic LLMs to support the development process.

• Nice to have

• Experience with Cypress or similar end-to-end testing frameworks.

• Experience with Figma and translating UI designs into production code.

• Understanding of UX principles and approaches.

• Familiarity with micro-frontend architectures and build tooling (e.g., webpack, Vite).

• Other

• Languages

• English: C2 Proficient

• Seniority

• Senior

• Luxoft Benefits

• Relocation options

• Experience in an international environment

• Cross-cultural experience

• Feedback culture

• Regular appraisals

• Annual holiday - 20 or 26 days. The duration of the leave depends on the overall seniority

• Occasional leave - 1 or 2 days/ depending on the circumstances

• Child care leave - 2 days or 16 hours per year

• Absence due to force majeure - 2 days or 16 hours per year

• Maternity Leave - 20 weeks

• Parental Leave - 41 weeks

• Paternity Leave - 14 days

• Expert-led tech courses covering basic to advanced topics

• Internal instructor-led soft skills courses

• Comprehensive in-house self-learning resources for both soft and hard skills

• Access to external self-learning libraries like ProQuest eBook and Udemy for Business

• Cloud Programs: MS Cloud Academy, AWS Partner Academy, Google Cloud Academy

• Custom Learning Programs: upskilling, reskilling, technical mentorship

• Leadership Programs for Managers

• Multisport card

• Possibility to order Multisport card at the corporate rate for family members

• LuxGood Program: wellbeing seminars, contests, relaxation sessions, yoga sessions, etc.

• One Team Program: Buddy for each New Joiner; seminars, meeting and workplace space to support integration with local community and culture; “Hire me” workshops for partners

• Preferential banking offer

• Preferential car leasing offer

• Cafeteria program discounts for shops, cinema tickets, holiday offers

• Luxoft Social Benefit Fund: sport and recreation benefits, the possibility to receive financial support

• Private Healthcare Insurance with unlimited access to specialists

• Full dental support

• Travel Insurance

• Possibility to add private healthcare coverage for family members at the corporate rate

• Life insurance at the corporate rate for employees and family members, including payment of the basic package for the employee by the employer

• Reimbursement for corrective glasses

• Many fun social activities organized by the Luxoft team offline in your city

• Online entertainment events for whole company and local team events

• A workplace where you’re treated with respect within a multicultural team

• Rotation between projects and accounts

• New career opportunities

• The acquisition of rights to the above benefits depends on the form of cooperation. Benefits apply to those employed under a contract of employment.

• Please note that relocation is not available for all open positions. At Luxoft Poland it is possible to work remotely only from the territory of Poland.

• Options offered by the Polish government.

• Krakow, Poland

• Req. VR-125586

• Front-end React

• BCM Industry

• 16/10/2026

• Req. VR-125586

• Apply for Senior UI Engineer in Krakow

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