Senior Frontend Engineer – Identity

About the Role

As a Senior Frontend Engineer in the Identity team, you will build best-in-class authentication
experiences and account protection systems for millions of users globally. You will also contribute
to central services that support teams and products across the organization.

Your primary focus will be frontend development using TypeScript, React, and Next.js, while
bridging frontend and backend systems.

Your Responsibilities

• Own frontend development and contribute to backend API design
• Collaborate closely with Product Designers and Mobile Engineers
• Contribute to the internal Design System for consistent user experiences
• Build secure, user-friendly self-service account features
• Drive initiatives end-to-end—from requirements to rollout
• Work in a distributed, collaborative engineering team
• Continuously improve systems, processes, and user experiences

Your Profile

• Strong experience with TypeScript and React
• Experience with fullstack frameworks like Next.js (preferred)
• Backend knowledge with focus on API development
• Interest in security and reliability topics
• Familiarity with authentication technologies (OAuth, MFA) is a plus
• Adaptability in fast-moving environments
• Structured and proactive working style
• Collaborative mindset with strong communication skills
• Continuous improvement mindset with pragmatic problem-solving
• Fluent English (written and spoken)

What You’ll Experience

• Ownership of impactful projects from start to finish
• Cross-functional collaboration with diverse teams
• High engineering standards and continuous learning
• Lean processes that promote adaptability and efficiency
• Team-first culture focused on collaboration and support

Why Join SumUp

• Global impact: Build fintech products used by millions of businesses worldwide
• Learning culture: Hack Days every second Friday and global Hack Weeks
• Diversity & Inclusion: Inclusive workplace where all perspectives are valued
• Learning budget: €2,000 annually for development and conferences
• VSOP program: Own a stake in the company’s success
• Pension plan: Company matches up to 20% of contributions
• Sabbatical: 30-day break after 3 years
• Referral bonus: Earn rewards for bringing in talent
• Additional perks: Sports subsidies, relocation support, childcare assistance, subsidized meals

About SumUp

At SumUp, we empower small businesses with simple, affordable tools to thrive. Today, over
4 million businesses across 36 markets rely on our solutions for payments, finance,
and customer management.

• 3,000+ employees from 90+ nationalities
• Global collaboration and innovation-driven culture
• Strong commitment to inclusivity and continuous learning

Diversity & Inclusion

We are proud to be an Equal Employment Opportunity employer. We value diversity and are committed
to creating a safe, respectful, and inclusive workplace for everyone.

Application Tip

You don’t need to meet 100% of the requirements to apply. If you’re excited about the role and
eager to grow, we encourage you to submit your application.