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Full-time
Virtual Stock Option programme, Annual L&D budget, Paid leave, Health insurance, Life insurance, Dental coverage
Posted 5d ago
~40 hrs/week
Responsibilities
You will build and maintain backend services for the Payments Experience team while migrating legacy systems to modern infrastructure. This involves collaborating with a focused squad to ensure reliable payment processing across 37 markets.
Requirements
The ideal candidate has strong hands-on experience with Go, microservices, and SQL databases like PostgreSQL. You should also be comfortable working with containerized deployments on AWS and navigating multi-language codebases including Ruby.
Full job description
We believe in the everyday hero. Those who have the courage to follow their passion and who have the strength and determination to realise their dreams.
Small business owners are at the heart of all we do, so we're creating powerful, easy-to-use financial solutions to help them run their businesses. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across Europe, South America and the United States work together to ensure that small business owners can be successful doing what they love.
About the team
The Payments Experience team sits at the heart of how millions of small businesses receive their money. We build and maintain the backend services that power payout settings, payout instruments, and the tooling that keeps payments flowing reliably across 37 markets. Right now, the tam is working through a meaningful technical challenge: migrating legacy services off an ageing platform database while continuing to deliver new capabilities for merchants and internal teams. This is a great opportunity to join a small, focused squad where your contributions are visible, your code matters, and there's real space to grow your craft in a complex fintech domain.
What you'll do:
Build and ship features within the Payments Experience domain, including payout instrument flexibility per market and tooling to manage SUBA availability for sales teams
Support the ongoing maintenance and operational health of the team's backend services, keeping them stable and reliable
Contribute to decommissioning a legacy Ruby service that manages payout settings in the Dashboard and SuperApp, including cleaning up dependencies for a smooth transition
Help remove Platform DB dependencies from the Bank Accounts service as part of a broader migration effort
Take part in planning and refinement sessions, sharing technical assessments and effort estimates with the team
You'll be great for this role if you have:
Strong hands-on experience building applications in Go, with a solid grasp of core language concepts and the standard library.
Comfortable working within microservices architectures and implementing or consuming RESTful APIs.
Good knowledge of SQL databases, particularly PostgreSQL, and ability to write clean, efficient queries.
Familiarity with containerised deployments using Kubernetes and experience working with AWS.
Open to feedback, motivated to solve real engineering problems, and comfortable navigating multi-language codebases (the team works across Go and Ruby).
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 in 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 you 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)
🏥 Peace of mind: comprehensive health and life insurance - includes dental coverage
💪 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 (100 EUR per month) plus flexibility via our Re:Benefits platform (40 EUR)
🚌 Easy commute: free shuttle buses connecting directly to Joliot-Curie metro station
👶 Family-friendly: new baby bonus
🌴 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 teamOpens in new window 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 LinkedInOpens in new window, InstagramOpens in new window, and TikTokOpens in new window.
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.
Related keywords
GolangRubyPaymentsFintechMicroservicesRESTful APIsPostgreSQLKubernetesAWSBackendDashboardSuperAppDatabase migrationCloud computingSoftware engineeringAPI development
SumUp is a leading global fintech company committed to levelling the playing field for small businesses. Founded in 2012, we’re the trusted partner of over 4 million merchants in 37 markets, providing simple and affordable tools that help them manage payments, finance, and customer relationships.
Our vision is a world where everyone can build a thriving business. Guided by this, we champion small business ownership by creating accessible solutions that empower entrepreneurs to grow and succeed.
Our diverse team of over 3,000 SumUppers — representing more than 90 nationalities across 20 offices worldwide — is at the heart of our success. Beyond business, we donate 1% of the net revenue generated by Solo devices to environmental causes and support educational and entrepreneurial initiatives around the world.
Recognised as a Top Global Employer for inclusion by the Stonewall Workplace Equality Index in 2022 and 2023, and awarded Fintech Diversity Initiative of the Year at the Irish National Fintech Awards in 2025, SumUp continues to build an inclusive, supportive, and purpose-driven workplace where everyone belongs.
Offices: 32 - 34 Great Marlborough St, London, W1F 7JB, GB · Koppenstraße 8, Berlin, 10243, DE · R. Gilberto Sábino, 215 - Pinheiros, São Paulo, São Paulo, Pinheiros 05425-020, BR · Köln, DE · Warsaw, PL
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How many Technology jobs are open in Sofia, Bulgaria right now?
There are currently 950 open technology positions in Sofia, Bulgaria listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Technology roles in Sofia, Bulgaria?
Companies currently hiring include Tieto, Hewlett Packard Enterprise, Playtech, Mercier Consultancy, AgileEngine, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Technology jobs in Sofia, Bulgaria?
Yes — 652 of the 950 open technology positions offer remote or hybrid work (181 remote, 471 hybrid).
How do I apply for Technology jobs in Sofia, Bulgaria?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.