Senior Fullstack Engineer - Identity

As a Senior Fullstack Engineer in the Identity team, you will be working on providing best-in-class authentication experiences and account protection for millions of users globally, as well as central services that enable teams and products across SumUp.

We're looking for someone who is adaptable, proactive, and ready to take ownership. Your primary focus will be on frontend development in TypeScript using React / Next.js, while forming the bridge to our backend development in Go.

As part of a team with a broad scope, you'll group with other engineers around and contribute to changing initiatives. Within those initiatives, you will get the chance to take ownership and drive topics end-to-end, from the collection of requirements and designing the solution, to orchestrating the rollout and communication with stakeholders.

About the team:

We are a cross-functional and truly engineering-driven team. Expect to work with a talented and motivated team on impactful and far-reaching projects.

As a team, we set a high bar in engineering and continuously strive to raise it. We keep our processes lean to make us more effective and adaptable. Personal fit is important to us. We have a strong team-first mentality and believe in acting as a cohesive unit beyond just the technical level - join us!

What you'll do:

• Take ownership of frontend development within the team, while helping to design and build clean and reliable APIs on the backend that serve the frontends.
• Closely align with our Product Designers and Mobile Engineers, creating a tight feedback loop.
• Employ and contribute to our internal Design System for a coherent experience across platforms.
• Create secure, user-friendly self-service features that empower our users to manage their accounts and contact preferences with confidence.
• Work with a talented distributed team that values collaboration, learning, and continuous improvement.
• Enjoy your work! We are looking for someone to be paid to do what they love.

Do you have experience in TypeScript?, * Professional frontend development experience with Typescript and React. Prior experience with fullstack frameworks like Next.js would be helpful.

• Backend development experience, preferably with Go, focussed on API development.
• Excitement for security and reliability topics. Experience with authentication and authorization technologies (e.g. OAuth, Multi-Factor Authentication) would be nice to have.
• A flexible mindset and the ability to adapt quickly in a fast-moving environment and navigate complex domains. You are a quick learner and have a proven ability to pick up new skills and concepts swiftly.
• A structured, proactive way of working. You enjoy working independently but also effectively collaborate with your cross-functional team and other teams.
• A natural drive to improve things-you're always looking to make systems and processes better. You strive for great solutions, but also know when to be pragmatic.
• Confidence in asking for help or using available tools (like search engines or AI assistants) when something is beyond your grasp.
• Strong communication skills in English, both spoken and written. As part of a globally distributed team, clear and respectful communication is essential.

Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Berlin office. This involves an office-first setup

We take learning and experimentation seriously with Hack Days every second Friday, and entire global Hack Weeks.

Commitment to Diversity and Inclusion: Be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced

A dedicated annual L&D budget of €2,000 for attending conferences and/or advancing your career through further education

Enrolment onto our VSOP program: You will own a stake in SumUp's future success

A corporate pension scheme where we match up to 20% of your contributions

30 Days Sabbatical: Enjoy the unique opportunity to take a well-deserved break with our 30 days sabbatical benefit after completing 3 years of employment with SumUp

Referral Bonus: Earn additional rewards by referring talented individuals to join the SumUp team

• ️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, relocation assistance, subsidised office lunches

Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing simple and affordable tools that allow them to thrive. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. Our commitment to small businesses is reflected in our diverse team of over 3,000 SumUppers from over 90 nationalities, united by global collaboration and an innovative mindset. Our core values lay the foundation for who we are and what we stand for, shaping our work culture and driving our success. We foster inclusivity and a continuous learning culture, providing a safe space for personal and professional growth. Our differences make us unique and strong as we strive to create an environment where everyone belongs and feels supported, no matter how they identify. SumUp is proud to be an Equal Employment Opportunity employer, actively seeking and embracing diversity in our workforce. We don't make hiring or employment decisions based on race, colour, religion or religious belief, ethnic or national origin, nationality, sex, gender, gender identity, sexual orientation, disability, age or any other basis protected by applicable laws or prohibited by company policy. Our commitment extends beyond recruitment to creating a safe and respectful workplace where harassment of any form is strictly prohibited. Explore career opportunities with us and join a team driven by collaboration, innovation, and a shared vision of creating a world where everyone can build a thriving business. Discover more about our vibrant and inclusive work culture and how we work on our careers website, and follow our journey on LinkedIn and Instagram.