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June 24, 2026

Full-Stack Engineer

Senior • Remote

110 - 129 PLN

Bialystok, PD, Poland

About the Role

We are looking for a Senior Fullstack Engineer to join a product team building modern, scalable web applications and digital experiences. You will work across the entire application stack, from user-facing interfaces to backend services and integrations. The role has a strong focus on frontend engineering while also involving backend development, API design, and data management. You will collaborate closely with product, design, and engineering teams to deliver high-quality, accessible, and performant applications.

Responsibilities

  • Develop and maintain modern web applications using React, Node.js, and TypeScript.
  • Build scalable and reusable UI components integrated with a design system.
  • Develop and maintain backend services and APIs using Node.js and Fastify.
  • Integrate applications with CMS platforms and third-party services.
  • Work with PostgreSQL and Redis to support application functionality and performance.
  • Write and maintain automated tests, including unit and end-to-end tests.
  • Ensure high standards of accessibility, performance, and code quality.
  • Participate in architectural discussions and contribute to engineering best practices.

Requirements

  • Strong commercial experience in fullstack development using React and Node.js.
  • Solid experience with modern frontend technologies, including React Router and TanStack Query.
  • Experience integrating with Headless CMS platforms, preferably Contentful.
  • Good understanding of API design and backend development principles.
  • Experience with PostgreSQL and Redis.
  • Experience with automated testing frameworks such as Vitest and Playwright.
  • Strong understanding of accessibility standards (WCAG) and performance optimisation.
  • Ability to work across the entire software development lifecycle in a product-oriented environment.

Nice to Have

  • Experience with authentication and identity platforms such as SAP Gigya.
  • Experience integrating Salesforce products or loyalty platforms.
  • Experience in highly scalable, customer-facing digital products.
  • Experience working in agile, cross-functional product teams.

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