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Senior Frontend Developer

Senior Frontend Developer

Jit TeamWarszawa, Województwo mazowieckie, Polska
30+ days ago
Job description

Salary : PLN / MD (B2B)

Working model :

elastic hybrid from Warsaw / Gdynia / Rzeszów / Kraków (1 day per week from the office)

Why choose this offer?

  • International working environment
  • Freedom in terms of collaboration between team members
  • Scandinavian organizational culture providing you with work-life balance
  • Getting to know how does the financial products and market works

Project

We are building a modular frontend platform based on microfrontend architecture to support multiple business domains within a large-scale web application. The project involves integrating independent React applications into a cohesive user experience, with shared design systems, common authentication flows, and runtime-loaded components. The goal is to create a scalable, maintainable, and consistent frontend ecosystem that enables teams to work independently while delivering a unified product.

Expected competences and knowledge

  • Strong expertise in React and TypeScript
  • Experience with Vite and Webpack Module Federation (remote / host configuration, dependency sharing)
  • Understanding of microfrontend architecture and dynamic runtime integration
  • Experience with shared design systems and reusable UI component libraries
  • Familiarity with React Router in distributed / federated setups
  • Proficiency in frontend testing frameworks (Jest, React Testing Library, Cypress)
  • Knowledge of secure session flows (BFF-based login, no tokens stored in frontend)
  • Ability to collaborate in cross-functional teams and work with CI / CD pipelines
  • Awareness of a11y best practices (axe-core, eslint-plugin-jsx-a11y)

    • Technologies

    you'll work with

  • React
  • TypeScript
  • Vite
  • Jest, React Testing Library, Cypress
  • React Router

    • Client

    – why choose this particular client from the Jit portfolio?

    Jit Team is proud to partner with

    one of the leading European financial groups

    responsible for the registration, ownership records, and financial settlement of securities traded on financial markets in Norway and recently extended to other European markets.

    Jit Team has been a strategic partner

    to our client in the area of software development

    since 2017

  • . Over the course of the partnership, Jit Team's dedicated team working for our client has grown from three to

    • over 30 people

    , who have worked on the modernization of legacy applications, the implementation of new systems, and the development of a private cloud-based platform to host a variety of

    financial systems

    About Jit Team

    The Human factor of IT

  • it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ

    • over 700 experienced experts

  • . We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme.

    • Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what

    we have achieved over 15 years of activity

  • . By supporting indigenous initiatives, we ensure the circulation of good energy.
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    Senior Frontend Developer • Warszawa, Województwo mazowieckie, Polska