Senior Frontend Engineer - Identity
SumUp
Seniority
Senior
Model
In-Office
Sector
Salary
Undisclosed
Contract
Full-Time
About the role
You'll be a Senior Fullstack Engineer in the Identity team, working on authentication experiences and account protection for millions of users globally. Your primary focus will be frontend development in TypeScript using React/Next.js while bridging to backend development in Go.
What you'll do
- Take ownership of frontend development while helping design and build clean, reliable APIs on the backend
- Closely align with Product Designers and Mobile Engineers to create a tight feedback loop
- Employ and contribute to the internal Design System for coherent cross-platform experiences
- Create secure, user-friendly self-service features for account and contact preference management
- Drive initiatives end-to-end from requirements collection to solution design and stakeholder communication
- Work with a distributed team focused on collaboration, learning, and continuous improvement
What you'll need
- Professional frontend development experience with TypeScript and React
- Backend development experience, preferably with Go, focused on API development
- Flexible mindset and ability to adapt quickly in fast-moving environments
- Structured, proactive working approach with ability to work independently and collaboratively
- Natural drive to improve systems and processes while knowing when to be pragmatic
- Strong communication skills in English, both spoken and written
Nice to have
- Prior experience with fullstack frameworks like Next.js
- Experience with authentication and authorization technologies (OAuth, Multi-Factor Authentication)
- Excitement for security and reliability topics
What they offer
- €2,000 annual learning and development budget for conferences and education
- VSOP program ownership stake in company success
- Corporate pension scheme with up to 20% contribution matching
- 30 days sabbatical after 3 years of employment
- Hack Days every second Friday and global Hack Weeks
- Urban Sports Club subsidy, Kita placement assistance, and subsidised office lunches