Senior Frontend Engineer - ReactJS
JOINBarcelona, Catalonia, Spain
Posted March 4, 2025
67000 - 80000 EUR
Full Time
About the Company
JOIN is a startup that helps thousands of businesses find the right people — faster, fairer, and with less friction.
Job Description
JOIN is looking for a Senior Frontend Engineer to join their established engineering hub in Spain. The ideal candidate will have 6+ years of experience building production frontends with modern JavaScript frameworks, specifically React. They will own features end-to-end, raise the technical bar, evolve the Design System, and contribute to the company culture of knowledge sharing. The company offers a competitive salary, Apple hardware, private health insurance, team events, and relocation support.
Requirements
- 6+ years building production frontends with modern JavaScript frameworks (React strongly preferred)
- Deep comfort with TypeScript, HTML5, and CSS3
- Solid experience with state management (Zustand or equivalent)
- Hands-on with API integration — REST, GraphQL, or both
- Experience writing meaningful tests (unit and E2E)
- Familiarity with CI/CD and Git workflows
- Track record of working in cross-functional Agile teams — you collaborate with Product and Design, not just other engineers
- Strong opinions on performance and usability — backed by data when possible
Benefits
- Competitive salary
- Apple hardware
- Private health insurance
- Team events
- Relocation support
