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(Senior) Freelance Web Developer

Remote
Full or part-time
Freelancer

What you will be doing

  • Building and maintaining high-performance, accessible websites and web applications.
  • Contributing to frontend, backend, API, and data model design and implementation.
  • Developing CMS-driven websites, including content modelling, localisation, and editorial workflows.
  • Implementing product features, backend functionality, and user interfaces.
  • Integrating with internal systems, third-party services, and external APIs.
  • Supporting SEO, performance, and accessibility best practices, including Core Web Vitals and WCAG 2.1 AA.
  • Assisting with deployment, hosting, testing, QA, and documentation.
  • Working independently, taking ownership of assigned tasks, and proactively solving problems.

We need you to have

  • 5+ years of professional web development experience delivering production-ready websites and web applications.
  • Strong experience with React; Next.js strongly preferred.
  • Solid full-stack experience with TypeScript, REST/GraphQL APIs, authentication, state management, and database-backed applications.
  • Experience with headless CMS platforms, e.g. Strapi/Contentful, including localisation, editorial workflows, preview setups, and customisation.
  • Strong skills in HTML5, CSS, and modern styling approaches such as Tailwind CSS or CSS Modules.
  • Proficiency with Git/GitHub and collaborative development workflows.
  • Proven ability to optimise for performance, accessibility, and SEO.
  • Experience with deployment workflows, CI/CD, and cloud/hosting environments.
  • Familiarity with internationalisation/localisation approaches and regional content requirements.
  • Strong communication skills, good judgment, and the ability to work independently and proactively.
  • Comfort using AI-powered development tools is a plus.

Benefits

  • Freelance/contractor
  • Start Date: September
  • Duration: 2–3 months, depends on capacity
  • Location: CET +/- 2h
  • Capacity: 30–40h per week

About us

We are Berlin Bytes, a creative software development and consulting agency. Together with Kambria, our AI transformation lever, we design, build, and scale innovative digital and AI-driven solutions. We empower businesses to not just adapt, but thrive and lead in the digital era.