The role

Join a long-term frontend modernization project for a retail checkout (Tills) UI application used on physical kiosks across the UK and Hungary. The system is live in production on over 35,000 devices, with ongoing development focused on improving developer experience, UI maintainability, and reducing time-to-market. Also, in this role, we will invite a new colleague to come to the client’s office 3 times a week at the beginning.

The application is web-based, tested locally in Docker containers or virtual machines, and integrates with various REST APIs.

What you will do

  • Contribute to the rewrite and refactoring of a complex, production-grade UI application.
  • Develop new features and components using React with TypeScript, adhering to performance and usability best practices.
  • Work closely with UX designers and backend developers to deliver intuitive, user-friendly interfaces.
  • Collaborate with a distributed team (Hungary and UK), participating in structured Agile workflows including handover sessions and acceptance reviews.
  • Ensure high code quality, performance, and maintainability across the application.
  • Help improve internal tooling, developer experience, and the local development environment.

Requirements

  • 5+ years of frontend development experience in a production environment.
  • Strong proficiency in React, TypeScript, and frontend architecture.
  • Experience working with Remix, React Router, or other modern routing frameworks.
  • Familiarity with state machines / state management tools like XState.
  • Solid understanding of REST APIs, cross-browser compatibility, and performance optimization.
  • Experience working in Docker-based local development environments.
  • Strong communication and collaboration skills, especially within distributed Agile teams.
  • Ability to work independently and take ownership of complex features and technical decisions.

Nice-to-have

  • Experience with Lighthouse or other performance auditing tools.
  • Previous experience in retail, POS systems, or kiosk-based interfaces.
  • Familiarity with CI/CD pipelines and frontend testing frameworks (e.g., Jest, Playwright, Testing Library).

Team & Work Style

  • Work within a 15-person engineering team split across Hungary and the UK.
  • Two cross-functional teams sharing a common backlog and well-structured processes.
  • Close collaboration with UX/UI designers to ensure high-quality interface design.

    • Mostly remote work after the initial onboarding period.

Why Join

  • Work on a high-impact product used in thousands of real-world retail environments.
  • Contribute to a high-scale, performance-critical application.
  • Be part of a collaborative international team focused on quality, clean code, and long-term maintainability.

What we offer

  • Hybrid working model with remote work opportunities (*) and flexible working hours
  • Private Health Insurance
  • People Lead system for your personal development
  • A culture of continuous growth, providing various training resources
  • Referral System
  • Agile mindset, simplified processes, and a great atmosphere where commitment and autonomy are celebrated
  • A community-first mindset working with talented people across technology products and consulting

Additional benefits based on location:

Hungary:
  • 20 vacation days, increasing according to labour law
  • Extensive cafeteria package
  • Commuting allowance

About us

Zenitech is a leading technology solutions provider dedicated to reshaping the global digital landscape. Headquartered in the UK, Zenitech operates internationally, with offices in Lithuania, Romania, and Hungary.
We use a bespoke approach depending upon where the client is on their digital journey, comprising a combination of access to dedicated R&D labs, technology implementation advice, and specialist nearshore development talent. As an international community of individuals who are open to learn from each other, we collectively define and input into the digital future of the clients’ businesses.

Why Zenitech?

  • Impactful Projects: Drive meaningful change through digital transformation projects and have an opportunity to make an impact on many different industries.
  • Collaborative Culture: Be part of a diverse, inclusive team committed to growth, innovation, and continuous learning.
  • Professional Growth: Zenitech supports continuous learning and development through the People Lead system, helping you advance your skills and career.

Diversity and Inclusion

Zenitech celebrates diversity in all its forms. We aim to create an inclusive environment where everyone feels valued for their unique contributions and perspectives. If you require any adjustments during the application process, please let us know — we’re here to help. Our commitment to diversity, equity, inclusion, and belonging can be found here.