Staffomatic

Senior Fullstack Engineer, React, Backend

Staffomatic

full-time

Posted on:

Location Type: Hybrid

Location: Hamburg • Germany

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Job Level

Senior

Tech Stack

Ember.jsJavaScriptMySQLReactRedisRSpecRubyRuby on RailsWebpack

About the role

  • Actively shape and further develop our workforce management platform together with a small, experienced team based in Hamburg or working remotely.
  • Take an active role in our Ember.js → React migration (React, Tailwind, Tanstack-Router, Capacitor.js).
  • Maintain and extend our Rails-based REST API (Rails, MySQL, Redis, Memcached, RSpec, …).
  • Design and implement new product features from end to end.
  • Continuously evaluate, improve, and refactor existing code.
  • Contribute to architectural decisions and the technical direction.
  • Be part of our agile planning and delivery process.

Requirements

  • 5+ years of experience with React and modern frontend development (state management, component architecture, hooks, performance, E2E tests).
  • Hands-on experience building production-ready React applications.
  • Solid understanding of modern frontend tools and ecosystems (Tanstack-Router, Tailwind, Vite/Webpack, REST APIs, etc.).
  • Experience with Ruby on Rails, including developing APIs and business logic (Rails, MySQL, Memcached, Redis, RSpec, GitHub, etc.).
  • Ability to design and implement complex features with non-trivial business requirements.
  • Enthusiasm for AI technologies and practical experience with AI-assisted tools to improve development workflows.
  • Comfortable working with remote and on-site teams.
  • Native German and fluent English.
Benefits
  • Very few meetings, a flat hierarchy, and zero mandatory team events — but that doesn’t mean we don’t enjoy meeting up and doing something fun ;)
  • Flexible working arrangements for our developers; all our processes are designed for remote work.
  • Necessary hardware is provided — choose your preferred equipment!
  • We enable the team to work from Cape Town once a year — maybe you want to escape the winter ;)
  • We live our mission and maintain a transparent, innovative company culture — we’re really proud of our team.
  • If you want to come into the office: our office is in the heart of St. Pauli and is equipped with everything you need (drinks, fruit, coffee, table tennis, great view of the shipyards...).
  • Want professional development? You’ll have our full support. Also: company pension contribution subsidy & more ;)
  • Every two weeks we meet in the office for a team meal. Once a month this includes our “Sparkle in Your Eye” session — an informal presentation where one of us shares a topic they’re passionate about, work-related or not.
  • We live our culture: a great working atmosphere, an open feedback culture, and professional standards — the foundation for a successful company.
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
ReactEmber.jsRailsMySQLRedisMemcachedRSpecstate managementcomponent architectureE2E tests
Soft Skills
team collaborationagile planningcommunicationproblem-solvingadaptability