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Salary range: 18 850 - 29 660 PLN per month About SumUp Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable business tools to help them start, run, and grow their businesses. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. About the Team You’ll join the Sell Online Tribe , the group shaping how merchants bring their businesses to life online. We design and build tools that help millions of entrepreneurs, from barbers to bakers, sell their products and services anywhere . Our focus is on Online Store and Bookings, two products at the heart of SumUp’s ecosystem. Together, they give merchants the power to manage appointments, showcase their offerings, and get paid—all from their phones. We’re a cross-functional team of Product Managers, Designers, and Engineers who move fast, collaborate openly, and care deeply about crafting beautiful, performant mobile experiences. As part of this team, you’ll help us expand into new verticals, close the feature gap, enabling us to position our product as a complete and competitive solution for small merchants, and make digital selling effortless for small businesses everywhere. What You’ll Do Design, build, and maintain scalable backend systems supporting SumUp’s Bookings product Collaborate with frontend and mobile engineers to deliver new features and improve APIs across web, iOS, and Android Participate in technical planning, code reviews, and design discussions to ensure clean, testable, and maintainable code Continuously optimise performance , ensure observability, and uphold our high reliability standards Actively contribute to shaping the technical roadmap for the Sell Online platform You’ll Be Great for This Role If You have 5+ years of professional backend engineering experience You’re fluent in Kotlin (or Java) and have deep experience with Spring Boot You’ve worked with PostgreSQL, Kafka, Docker, Kubernetes, and AWS You understand RESTful APIs, distributed systems, and event-driven architectures (e.g. CQRS, Event Sourcing) You bring experience with CI/CD pipelines, GitHub Actions, and observability tools like Grafana or Honeycomb You thrive in collaborative teams, enjoy mentoring peers, and care about delivering real value to merchants (Nice to have) Familiarity with gRPC, Protobuf, or performance optimisation at the backend/database level Why You Should Join SumUp 🇵🇱 🌎 Opportunity to work from our vibrant Warsaw office in the Hala Koszyki. This involves a hybrid setup 🌈 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 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education 🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across Warsaw 🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mind 🏖 Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team *Disclaimer The stated salary range represents the expected compensation for candidates who meet the core requirements of this role. Offers above this range may be considered in exceptional circumstances, subject to internal review and approval, where a candidate's qualifications, skills, or experience significantly exceed the role's standard expectations. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Salary range: 18 850 - 29 660 PLN per month About SumUp Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable business tools to help them start, run, and grow their businesses. Today, over 4 million businesses in 36 markets rely on SumUp as their financial partner to manage payments, finance and customer relationships. About the Team You’ll join the Sell Online Tribe , the group shaping how merchants bring their businesses to life online. We design and build tools that help millions of entrepreneurs, from barbers to bakers, sell their products and services anywhere . Our focus is on Online Store and Bookings, two products at the heart of SumUp’s ecosystem. Together, they give merchants the power to manage appointments, showcase their offerings, and get paid—all from their phones. We’re a cross-functional team of Product Managers, Designers, and Engineers who move fast, collaborate openly, and care deeply about crafting beautiful, performant mobile experiences. As part of this team, you’ll help us expand into new verticals, close the feature gap, enabling us to position our product as a complete and competitive solution for small merchants, and make digital selling effortless for small businesses everywhere. What You’ll Do Design, build, and maintain scalable backend systems supporting SumUp’s Bookings product Collaborate with frontend and mobile engineers to deliver new features and improve APIs across web, iOS, and Android Participate in technical planning, code reviews, and design discussions to ensure clean, testable, and maintainable code Continuously optimise performance , ensure observability, and uphold our high reliability standards Actively contribute to shaping the technical roadmap for the Sell Online platform You’ll Be Great for This Role If You have 5+ years of professional backend engineering experience You’re fluent in Kotlin (or Java) and have deep experience with Spring Boot You’ve worked with PostgreSQL, Kafka, Docker, Kubernetes, and AWS You understand RESTful APIs, distributed systems, and event-driven architectures (e.g. CQRS, Event Sourcing) You bring experience with CI/CD pipelines, GitHub Actions, and observability tools like Grafana or Honeycomb You thrive in collaborative teams, enjoy mentoring peers, and care about delivering real value to merchants (Nice to have) Familiarity with gRPC, Protobuf, or performance optimisation at the backend/database level Why You Should Join SumUp 🇵🇱 🌎 Opportunity to work from our vibrant Warsaw office in the Hala Koszyki. This involves a hybrid setup 🌈 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 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education 🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across Warsaw 🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mind 🏖 Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team *Disclaimer The stated salary range represents the expected compensation for candidates who meet the core requirements of this role. Offers above this range may be considered in exceptional circumstances, subject to internal review and approval, where a candidate's qualifications, skills, or experience significantly exceed the role's standard expectations. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

Team description The Hardware tribe builds the technology that turns everyday devices into secure, reliable card readers, from Bluetooth-connected dongles to fully in-house Tap to Pay on Android. You'll join a team solving genuinely hard problems: keeping payments working across flaky Bluetooth connections, handling online and offline flows without losing a transaction. It's a chance to go deep on Android engineering in a space where reliability really matters, since every merchant depends on these readers to get paid. What you'll do Build and maintain Android applications for card readers, SDKs, and the SuperApp, covering both new features and improvements to existing systems Work on Bluetooth Low Energy connections, online and offline payment flows, and Tap to Pay functionality Refactor and modernise legacy code to improve reliability, performance, and maintainability Contribute to testing practices, including unit and integration tests, to raise overall code quality Collaborate with peers and stakeholders across the team to manage priorities and shape solutions to technical challenges You'll be great for this role if... Several years of professional Android development experience, with solid proficiency in both Java and Kotlin Strong knowledge of clean architecture principles and hands-on experience maintaining Android SDKs Experience of writing unit and integration tests, and comfort refactoring legacy code without breaking existing functionality Familiarity with CI/CD pipelines, such as GitHub Actions, and an interest in improving build and release processes Ability to adapt to ambiguity and shifting priorities, with strong communication skills for working independently with stakeholders Why you should join SumUp 🌎 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 🌈 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 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education 💶 A corporate pension scheme where we match up to 20% of your contributions 🏖 Generous time off: enjoy 28 days of paid leave plus public holidays and special leave days Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp 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 38 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. Discover more about our culture and opportunities on our careers website , and follow our journey on LinkedIn , Instagram , and TikTok . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

SumUp gives small businesses the tools they need to get paid, manage their money, and grow - today, over 4 million merchants across 37 markets worldwide rely on SumUp to do exactly that. The Bank Web squad sits within SumUp's Banking domain and owns the web experience across our banking surfaces - from the business account dashboard that merchants use daily, to the back-office tooling that powers the support teams behind them. The team has a clear mission: make Bank Web a genuinely first-class platform, on par with our mobile applications in quality, reliability, and performance. Joining now means being part of a team that’s at a key growth point - modernization work, growing scope across markets, and making architectural decisions that will shape how millions of merchants experience SumUp's banking products. 👉 Take a look at our Sofia office What you'll do Build and own features end-to-end across our web banking surfaces - from scoping and component implementation through testing, observability, and production maintenance Work across the full stack - including defining API contracts, working with backend proxies, and integrating with the services that power our banking platform Contribute to modernisation efforts, including architectural improvements, component refactoring, and stack migrations that reduce technical debt and accelerate future delivery Review peers' pull requests with attention to UI consistency, accessibility, and frontend best practices Participate in production support and incident reviews, helping to strengthen the squad's operational resilience across its web domain You'll be great for this role if… Strong experience with React, TypeScript, with a track record of delivering production-ready features end-to-end -not just isolated UI components Genuine full-stack capability: Experience defining API contracts, working with backend proxies, and owning integrations, not just consuming them; backend experience in Node, Kotlin, Java, or Golang is valued Solid understanding of frontend architecture, component design patterns, state management, and how frontend applications connect to backend services Experience writing and maintaining frontend tests (unit, integration, snapshot, end-to-end) and a genuine care for code quality and reliability Comfort navigating a complex, multi-stack codebase. React and TypeScript are core to this role, while our broader ecosystem also includes Node.js, Kotlin, Java, Go, Angular, AWS and Kafka. Prior experience with all of these is not required, but familiarity with most of them is a plus Curiosity about complex domains - banking products have intricate user flows and edge cases, and you enjoy digging into them to find the right solution Familiarity with CI/CD practices and getting changes safely to production; exposure to AI tooling to augment engineering workflows is a plus Why you should join SumUp 🌍 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our modern Sofia office. This involves an office-first setup 🌈 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 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 and 10 paid days of educational leave which can be used to attend conferences and/or advance your career through further education 🏖️ Generous time off: 25 days of paid leave, plus one extra day per year of service (up to 35), along with public holidays and special leave options 🏥 Peace of mind: additional health insurance and life insurance 💪 Stay active: on-site yoga and a co-sponsored Multisport card offering access to hundreds of sports facilities 🍽️ Meal support: benefit from a tax-free food voucher program plus flexibility via our Re:Benefits platform 🚌 Easy commute: free shuttle buses connecting directly to Joliot-Curie metro station 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp 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 37 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. Discover more about our culture and opportunities on our careers website , and follow our journey on LinkedIn , Instagram , and TikTok . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

At SumUp, we empower small businesses with simple, affordable tools to start, run, and grow. Our Global Bank teams build the financial services that help merchants manage their money and keep their businesses moving. For merchants, a transfer should feel simple. Behind that experience is a complex network of payment schemes, banks, providers, messages, certificates, reconciliations, and edge cases—all of which need to work together reliably. Transfers Europe squad is the integration layer connecting SumUp’s internal systems with the financial networks that move money across Europe and the UK. We build and run the backend services behind SEPA and UK transfer flows, helping move money accurately and reliably across external networks. As a Backend Engineer, you’ll take ownership of services that process real money. You’ll work on complex systems problems to ensure seamless integrations as we scale, while seeing a direct connection between your engineering decisions and merchant trust. If you enjoy understanding how systems behave under real-world conditions while improving them over time, we’d love to hear from you. Our tech stack includes Golang, AWS, Kafka, PostgreSQL, Redis and Kubernetes, supported by a strong observability toolchain with Prometheus, Grafana, and Honeycomb. We also actively use AI‑assisted development tools such as Cursor, GitHub Copilot, and others. What you’ll do Build and maintain production money movement backend services , contributing to their delivery, observability, and ongoing maintenance. Own and deliver well‑defined tasks and features , and contribute to larger projects within the team’s domain. Contribute to technical design and implementation , following established architectural patterns and best practices. Improve service reliability and quality by writing tests , enhancing monitoring , and following established delivery pipelines. Support the operation of the systems you work on by participating in on‑call rotations, incident response, and learning from post‑incident reviews. Apply a backend and systems perspective during refinement, raising questions about risks, dependencies, and edge cases. Collaborate closely with Product, QA, and other engineers to deliver end‑to‑end transfer and banking capabilities. You’ll be great for this role if you Have experience building backend services in a modern environment and supporting them in production. You are proficient in Golang and and comfortable learning and working with other languages as needed Are comfortable working with cloud‑based systems, containerized workloads, and automated delivery pipelines. Raise well-scoped pull requests, conduct thorough code reviews, and help maintain high standards of code quality and test coverage across the team Understand the fundamentals of system architecture, data modelling, and API design, and are eager to deepen this knowledge. Are curious about how your work fits into the broader system and product experience. Communicate clearly and collaborate effectively with engineers, product managers, and other stakeholders. Any of the following would be considered a plus Exposure to banking, payments, or financial systems, especially in regulated environments. Experience supporting systems with production traffic, including participating in incident response. Use of AI‑assisted tools to improve development speed, learning, or code quality. Why you should join SumUp 🌎 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 🌈 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 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp's future success 📚 A dedicated annual L&D budget of €2000 for your individual development, which can be used to attend conferences and/or advance your career through further education 💶 A corporate pension scheme where we match up to 20% of your contributions 🏖 Generous time off: enjoy 28 days of paid leave plus public holidays and special leave days 🩺 Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp Be empowered to do more that matters. At SumUp, we're on a mission to empower small businesses across the globe by providing a vast set of simple and affordable business tools to help them start, run, and grow their businesses. 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 an inclusivity and 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 . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

SumUp builds financial solutions for millions of small businesses worldwide. Our Identity Lifecycle mission powers the systems that determine who can access those solutions, ensuring every merchant we onboard is verified accurately, compliantly, and at scale. As Engineering Manager for Verification , you will lead the squad responsible for identity checks across all of SumUp's markets. This is a high-impact opportunity to guide a team running high-stakes workstreams across KYC and a wide range of regulatory environments, in a domain that is both technically complex and central to the customer journey. You will help bring clarity, stability, and momentum to a complex domain, supporting the evolution of legacy-heavy systems into a platform that is increasingly observable, maintainable, and resilient in the face of a fast-changing regulatory landscape. The role calls for strong technical depth and sound engineering judgment, enabling you to lead delivery with confidence while shaping the architecture decisions that will define how verification works at SumUp for years to come. You will work closely with Product, Compliance, and Operations to ensure solutions are practical, safe, and scalable, with regulatory requirements considered early and effectively throughout the development process. At the same time, you will create the conditions for engineers to do their best work by providing direction, support, and space for ownership. Together, you will raise the bar for how verification systems are designed, built, and operated at SumUp. What you'll do: Lead the Verification Squad as its engineering leader, creating focus and momentum by removing bottlenecks, managing cross-team dependencies, and helping engineers navigate complexity across legacy systems and evolving processes. Partner closely with Product, Compliance, and Operations to translate complex cross-market KYC and KYB requirements into clear engineering outcomes, identifying buildability considerations and regulatory risks early. Drive the technical and organisational improvements that strengthen the squad over time, reducing legacy overhead, improving tooling, and fostering greater shared ownership and sustainable delivery practices. Shape roadmap priorities alongside the PM, ensuring trade-offs are well understood and that compliance requirements and AI-influenced features are properly accounted for. Maintain high standards for how verification systems are built and operated, ensuring flows are observable, failures are controlled, and AI-driven components meet the same bar for reliability, traceability, and auditability as any other part of the system Develop engineers with intention through regular 1:1s, direct feedback, and deliberate stretch opportunities, building a team with strong technical and product judgment You'll be great for this role if: You have a proven track record of leading engineering teams through technical transformation, including large-scale migrations and legacy modernisation. You bring strong technical depth in backend technologies, particularly Go and API/integration architecture, and have hands-on experience with observability, CI/CD, and testing practices You have experience (or a appetite to learn) in KYC/KYB regulatory environments and understand how frameworks like eIDAS interact with product and engineering decisions You combine strategic thinking with hands-on technical credibility, and you communicate with clarity, empathy, and transparency across both technical and non-technical audiences You are a solid people leader who develops high performers, addresses underperformance directly and fairly, and builds psychologically safe, inclusive, high-performing teams Why you should join SumUp 🌎 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 🌈 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 🚀 Enrollment onto our Virtual Stock Option programme: you will own a stake in SumUp’s future success 📚 A dedicated annual L&D budget of €2000 for attending conferences and/or advancing your career through further education 💶 A corporate pension scheme where we match up to 20% of your contributions 🏖️ Generous time off: enjoy 28 days of paid leave plus public holidays and special leave days 🚵🏾‍♂️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp At SumUp, we’re on a mission to empower small businesses around the world with simple, affordable tools to help them start, run, and grow. More than 4 million merchants across 36 markets trust us as their financial partner — and we’re just getting started. We’re a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care. Our core values and culture shape everything we do, fostering inclusion, learning, and belonging. SumUp is proud to be an Equal Employment Opportunity employer, committed to building a safe, respectful, and diverse workplace where everyone can thrive. 👉 Explore more about our culture on our careers site , or follow us on LinkedIn and Instagram . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

SumUp builds financial solutions for millions of small businesses worldwide. Our Identity Lifecycle mission powers the systems that determine who can access those solutions, ensuring every merchant we onboard is verified accurately, compliantly, and at scale. As Engineering Manager for Verification , you will lead the squad responsible for identity checks across all of SumUp's markets. This is a high-impact opportunity to guide a team running high-stakes workstreams across KYC and a wide range of regulatory environments, in a domain that is both technically complex and central to the customer journey. You will help bring clarity, stability, and momentum to a complex domain, supporting the evolution of legacy-heavy systems into a platform that is increasingly observable, maintainable, and resilient in the face of a fast-changing regulatory landscape. The role calls for strong technical depth and sound engineering judgment, enabling you to lead delivery with confidence while shaping the architecture decisions that will define how verification works at SumUp for years to come. You will work closely with Product, Compliance, and Operations to ensure solutions are practical, safe, and scalable, with regulatory requirements considered early and effectively throughout the development process. At the same time, you will create the conditions for engineers to do their best work by providing direction, support, and space for ownership. Together, you will raise the bar for how verification systems are designed, built, and operated at SumUp. What you'll do: Lead the Verification Squad as its engineering leader, creating focus and momentum by removing bottlenecks, managing cross-team dependencies, and helping engineers navigate complexity across legacy systems and evolving processes. Partner closely with Product, Compliance, and Operations to translate complex cross-market KYC and KYB requirements into clear engineering outcomes, identifying buildability considerations and regulatory risks early. Drive the technical and organisational improvements that strengthen the squad over time, reducing legacy overhead, improving tooling, and fostering greater shared ownership and sustainable delivery practices. Shape roadmap priorities alongside the PM, ensuring trade-offs are well understood and that compliance requirements and AI-influenced features are properly accounted for. Maintain high standards for how verification systems are built and operated, ensuring flows are observable, failures are controlled, and AI-driven components meet the same bar for reliability, traceability, and auditability as any other part of the system Develop engineers with intention through regular 1:1s, direct feedback, and deliberate stretch opportunities, building a team with strong technical and product judgment You'll be great for this role if: You have a proven track record of leading engineering teams through technical transformation, including large-scale migrations and legacy modernisation. You bring strong technical depth in backend technologies, particularly Go and API/integration architecture, and have hands-on experience with observability, CI/CD, and testing practices You have experience (or a strong appetite to learn) in KYC/KYB regulatory environments and understand how frameworks like eIDAS interact with product and engineering decisions You combine strategic thinking with hands-on technical credibility, and you communicate with clarity, empathy, and transparency across both technical and non-technical audiences You are a strong people leader who develops high performers, addresses underperformance directly and fairly, and builds psychologically safe, inclusive, high-performing teams Why you should join SumUp 🌎 Opportunity to work with SumUppers globally on large-scale fintech products used by millions of businesses worldwide, from our Sofia office. 🌈 Join a global team where you belong: Check out our D&I Initiatives and Employee Resource Groups such as Pride Club, SumAfro, Neurodiversity, Grupos Mais, Women in Tech, and more 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp’s future success 📚 A dedicated annual L&D budget of €2000 for attending conferences and/or advancing your career through further education. In addition you can take up to 10 days’ educational leave to expand your skill set. 🏖️ You’ll receive 25 days’ paid leave, plus 1 additional day for each year of employment. 🚵🏾‍♂️ Numerous other benefits such as Urban Sports Club subsidy, Kita placement assistance, subsidised office lunches 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team About SumUp At SumUp, we’re on a mission to empower small businesses around the world with simple, affordable tools to help them start, run, and grow. More than 4 million merchants across 36 markets trust us as their financial partner — and we’re just getting started. We’re a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care. Our core values and culture shape everything we do, fostering inclusion, learning, and belonging. SumUp is proud to be an Equal Employment Opportunity employer, committed to building a safe, respectful, and diverse workplace where everyone can thrive. 👉 Explore more about our culture on our careers site , or follow us on LinkedIn and Instagram . Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.

At SumUp, we empower small businesses with simple, affordable tools to start, run, and grow. Our Global Bank teams build the financial services that help merchants manage their money and keep their businesses moving. For merchants, a transfer should feel simple. Behind that experience is a complex network of payment schemes, banks, providers, messages, certificates, reconciliations, and edge cases—all of which need to work together reliably. Transfers Europe squad is the integration layer connecting SumUp’s internal systems with the financial networks that move money across Europe and the UK. We build and run the backend services behind SEPA and UK transfer flows, helping move money accurately and reliably across external networks. As a Backend Engineer, you’ll take ownership of services that process real money. You’ll work on complex systems problems to ensure seamless integrations as we scale, while seeing a direct connection between your engineering decisions and merchant trust. If you enjoy understanding how systems behave under real-world conditions while improving them over time, we’d love to hear from you. Our tech stack includes Golang, AWS, Kafka, PostgreSQL, Redis and Kubernetes, supported by a strong observability toolchain with Prometheus, Grafana, and Honeycomb. We also actively use AI‑assisted development tools such as Cursor, GitHub Copilot, and others. What you’ll do Build and maintain production money movement backend services , contributing to their delivery, observability, and ongoing maintenance. Own and deliver well‑defined tasks and features , and contribute to larger projects within the team’s domain. Contribute to technical design and implementation , following established architectural patterns and best practices. Improve service reliability and quality by writing tests , enhancing monitoring , and following established delivery pipelines. Support the operation of the systems you work on by participating in on‑call rotations, incident response, and learning from post‑incident reviews. Apply a backend and systems perspective during refinement, raising questions about risks, dependencies, and edge cases. Collaborate closely with Product, QA, and other engineers to deliver end‑to‑end transfer and banking capabilities. You’ll be great for this role if you Have experience building backend services in a modern environment and supporting them in production. You are proficient in Golang and and comfortable learning and working with other languages as needed Are comfortable working with cloud‑based systems, containerized workloads, and automated delivery pipelines. Raise well-scoped pull requests, conduct thorough code reviews, and help maintain high standards of code quality and test coverage across the team Understand the fundamentals of system architecture, data modelling, and API design, and are eager to deepen this knowledge. Are curious about how your work fits into the broader system and product experience. Communicate clearly and collaborate effectively with engineers, product managers, and other stakeholders. Any of the following would be considered a plus Exposure to banking, payments, or financial systems, especially in regulated environments. Experience supporting systems with production traffic, including participating in incident response. Use of AI‑assisted tools to improve development speed, learning, or code quality. Why you should join SumUp 🌎 We’re a truly global team of 3200+ skilled professionals from 92+ countries, spread across 4 continents. Join the team from our Vilnius office. 🌈 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. 🚀 Enrolment onto our Virtual Stock Option programme: you will own a stake in SumUp’s future success 🏖️ Time off: 25 days of paid leave, plus special holidays 🏥 Peace of mind: health insurance through Gjensidige and life & accidental coverage from Ergo 💪 Stay active: gym membership allowance to help you keep fit on your terms 📚Career growth and learning opportunities: We invest in your development through regular training, mentorship programs, SumUp University cohort and a yearly learning budget (2,000 EUR) 💡We take learning and experimentation seriously with Hack Days every second Friday, and entire global Hack Weeks . 🌴 Break4me: 1-month sabbatical after 3 years of service 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team. Compensation : In Lithuania, for a Mid Level Engineer is 3,493 to 4,657 Euro Gross and for an Early Senior Engineer is 4,366 to 5,822 Euro Gross p/m + 2000 EUR annual learning budget + Virtual Stock Options. Offer may vary based on skills, experience and outcome from the hiring process. About SumUp At SumUp, we’re on a mission to empower small businesses around the world with simple, affordable tools to help them start, run, and grow. More than 4 million merchants across 37 markets trust us as their financial partner — and we’re just getting started. We’re a global team of 3,000+ people from over 90 nationalities, united by curiosity, collaboration, and care. Our core values and culture shape everything we do, fostering inclusion, learning, and belonging. SumUp is proud to be an Equal Employment Opportunity employer, committed to building a safe, respectful, and diverse workplace where everyone can thrive. 👉 Explore more about our culture on our careers site , or follow us on LinkedIn and Instagram . 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. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.