--- title: '(Senior) Backend Engineer at SumUp' canonical: 'https://feeny.ai/job/senior-backend-engineer-sumup-sao-paulo-73hret2bxbgh' type: 'job' last_seen: '2026-10-13' --- # (Senior) Backend Engineer at SumUp - **Company:** SumUp - **Location:** São Paulo, Brazil - **Posted:** 2026-08-03 - **Last confirmed live:** 2026-10-13 - **Apply:** https://sumup.com/careers/positions/8671401002?gh_jid=8671401002 ## Job description At SumUp, we believe small merchants are the heartbeat of our communities. By joining the Payments BR Tribe, you'll help shape solutions that directly solve merchants' everyday challenges and redefine how financial products empower entrepreneurship in Brazil. The tribe is deeply focused on the Brazilian market — understanding the real needs and behaviours of our merchants and building products that truly fit their world. You'll be part of a global, autonomous, cross-functional team of driven, purpose-led people who take ownership, embrace challenges, and care deeply about helping businesses succeed. As a (Senior) Backend Engineer, you'll be the technical anchor of a small, high-impact squad — bringing clarity to complex integration logic, setting the architectural direction, and helping a growing engineer reach their potential. This is a role for someone who finds satisfaction in making hard systems reliable, loves writing clean Go code, and isn't afraid to navigate the complexity that comes with building at scale in a fast-growing market. ## What you'll do - Own the architecture: Design and author RFCs that shape how the domain evolves, driving clean, scalable solutions across our integration layer with internal SumUp services and third-party services as well. - Write and review high-quality code: Take full ownership of backend delivery — from writing production-grade code to leading rigorous peer reviews that keep the codebase healthy and maintainable - Drive technical standards: Establish clear documentation, testing practices, and CI/CD improvements that reduce technical debt and make the squad more autonomous over time - Mentor and grow the team: Pair-program with and actively develop other engineers on the squad, acting as the technical reference point and fostering a culture of ownership and engineering excellence - Collaborate broadly: Partner closely with the Engineering Manager, Product Manager, and cross-functional stakeholders to translate business needs into clear technical roadmaps and scalable solutions What makes you a great fit - Solid backend development skills, with experience in Go, or strong experience in functional backend programming languages with a genuine drive to master Go quickly - Strong expertise in code design, automated testing, CI/CD, performance optimisation, and building resilient, well-architected systems - A track record of leading technical projects end to end — from writing design documents to shipping production improvements that hold up at scale - Hands-on experience with AWS Cloud services and strong SQL optimisation skills with relational databases - Have advanced English proficiency, with the ability to present and discuss technical topics clearly across teams and with non-technical stakeholders - Experience contributing to technical strategy beyond the immediate squad ## Why you should join SumUp 🌍 Global Experience: Collaborate with a diverse team of 3,000+ people from over 90 countries, and join our global off-sites and hackathons. 🤝 Collaborative Culture: Join a team that values diversity, innovation, and teamwork, where your ideas and contributions truly matter. 📈 Career Growth: Be part of a global team working on large-scale fintech products used by millions of businesses. 💙 Great Benefits: Health plans, meal vouchers (VR), Zenklub, Wellhub, life insurance, childcare allowance, and more. 📚 Learning & Development: Access an annual budget of R$ 10,000 for education, certifications, and conferences. 🌴 Time Off: Enjoy 30 additional days off through our Break4Me program after 3 years at SumUp. 💸 Grow with Us: Participate in our virtual stock program and benefit from SumUp’s success with company shares. Learn More About SumUp 🇧🇷 [Office tour at São Paulo](https://www.youtube.com/watch?v=8LwAYCUtfXQ) 💡 [Ask me anything: Engineering at SumUp](https://www.youtube.com/watch?v=7m8wlYCwlO4) 🚀 [SumUp’s Innovation Hackathon](https://www.linkedin.com/posts/sumup_insidesumup-innovation-hackathon-activity-7245403147458752513-0PD7?utm_source=share&utm_medium=member_desktop) 🤝 [Get to know our hiring process](https://www.sumup.com/careers/how-we-hire/) Ready to Join us? Apply now and help us shape the future of financial solutions for small businesses 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. ## About SumUp ## Company Overview - **One-liner**: SumUp is a global fintech company that provides simple, affordable payment and financial management tools to help small businesses start, run, and grow. - **Entity Type**: Private (Funding stage not publicly available) - **Headquarters**: London, United Kingdom - **Founded**: 2012 - **Founders**: Not specified in provided sources ## Core Business - **Primary industry**: Financial Services / Fintech (Payments) - **Target customers**: Small and medium-sized businesses (SMBs), B2B - **Mission or purpose statement**: "Empower small businesses all over the world." — with the vision of "a world where everyone can build a thriving business." ## Products & Services - **Payment Processing (Card Readers & POS)**: Hardware and software solutions for in-person and online payments, enabling merchants to accept card and contactless payments. - **SumUp Business Account**: A digital business account for managing finances and transactions. - **Invoicing & Customer Relationship Tools**: Tools to create invoices, manage customers, and streamline operations. ## Market Standing - **Valuation/Market Cap**: Not disclosed (private company) - **Key Metric**: Over 4 million merchants served across 37 markets; 3,000+ employees from more than 90 nationalities - **Notable Investors/Partners**: Not listed in provided sources - **Growth Signals**: Headcount growth to 3,000+; recognition as a Top Global Employer for inclusion (Stonewall Workplace Equality Index 2022/2023) and Fintech Diversity Initiative of the Year (2025); expansion across 4 continents with 20+ offices. ## Competitive Advantages - **Global reach**: Operating in 37 markets with localized products and support. - **Merchant focus**: Deep commitment to small business owners, with products designed specifically for their needs. - **Inclusive culture**: Strong diversity and inclusion programs, gender parity in workforce, and employee-led communities (e.g., Pride Club). - **Autonomous teams**: Small, empowered teams with servant leadership, fostering innovation and speed. ## Strategic Focus - Expanding product and service portfolio to become a complete financial partner for small businesses. - Continuing to invest in a learning culture (SumUp University) and employee development. - Maintaining an office-first culture while enabling occasional remote work to balance collaboration and flexibility. - Growing market presence by entering new geographies and deepening existing ones. ## Why Work Here - **Culture**: Office-first company that values human connection, autonomy, and continuous learning. Core values include Team First, We Care, and Founder’s Mentality. - **Remote/Hybrid policy**: Office-first with the ability to work remotely occasionally, as agreed with teams. - **Benefits**: Relocation support for overseas hires, dedicated budget for conferences and external training, and location-specific perks. - **Engineering culture**: Autonomous teams, servant leadership, and a focus on pragmatic, self-driven problem-solving. - **Inclusion**: Recognized as a Top Global Employer for inclusion; active LGBTQ+ community and gender parity initiatives. - **Hiring process**: Transparent, with recruiter screening, hiring manager interview, technical assessment, team interview, bar raiser, and final offer. ## Sources 1. [sumup.com](https://www.sumup.com/careers/) 2. [linkedin.com](https://www.linkedin.com/company/sumup) 3. [sumup.com](https://www.sumup.com/careers/culture/) 4. [sumup.com](https://www.sumup.com/careers/positions/) 5. [sumup.com](https://www.sumup.com/careers/how-we-hire/) ## Other roles at SumUp - [Head of Pricing & Monetisation](https://feeny.ai/job/head-of-pricing-monetisation-sumup-berlin-svqz040c9p72) — Berlin, Germany - [Head of Pricing & Monetisation](https://feeny.ai/job/head-of-pricing-monetisation-sumup-london-ydbzn18yv90y) — London, United Kingdom - [KYC Operations Agent with German](https://feeny.ai/job/kyc-operations-agent-with-german-sumup-sofia-b4ykc5q2b8n5) — Sofia, Bulgaria - [Conseiller(ère) commercial(e) terrain expérimenté(e)](https://feeny.ai/job/conseiller-ere-commercial-e-terrain-experimente-e-sumup-nice-alpes-maritimes-095qmbe3j90y) — Nice Alpes-Maritimes, France - [Experienced Field Sales Consultant - South London](https://feeny.ai/job/experienced-field-sales-consultant-south-london-sumup-london-bm83s0d3nyht) — London, United Kingdom - [Experienced Field Sales Consultant](https://feeny.ai/job/experienced-field-sales-consultant-sumup-canterbury-hh4gmtkx06aj) — Canterbury, United Kingdom - [Experienced Field Sales Consultant](https://feeny.ai/job/experienced-field-sales-consultant-sumup-maidstone-fh2wj2yz87fj) — Maidstone, United Kingdom - [Senior Backend Engineer - Cards](https://feeny.ai/job/senior-backend-engineer-cards-sumup-sofia-z595f8yj6nrs) — Sofia, Bulgaria - [Business Development Manager – Payments & POS](https://feeny.ai/job/business-development-manager-payments-pos-sumup-manchester-5nznxdq9q07w) — Manchester, United Kingdom - [Working Student - Executive Talent Sourcing](https://feeny.ai/job/working-student-executive-talent-sourcing-sumup-berlin-rxfcb6fga3gs) — Berlin, Germany