About this role
Senior Software Engineer in our Boulder, CO or El Paso, TX offices
Who you are:
Senior Software Engineer
As part of the SumUp team working in one of our fabulous offices, you’ll play an important role in building and maintaining key services that power our in-store products, integrations and payments. We’re a diverse group working in multiple contexts, across multiple technology platforms, and in support of global teams. Our products and services power thousands of devices, millions of interactions, and billions of sent messages annually. We own and support public-facing dashboards used by nearly all US SumUp merchants, internal and partner-level APIs, and a rich set of internal back-office tools.
What you’ll do:
- Maintain a high level of quality in our code bases through well-written automated tests, good architecture and code review processes.
- Own, design, and code product initiatives from start to finish.
- Participate in collaborative problem solving, planning sessions, and retrospectives.
- Work collaboratively with designers, product managers, QA, and internal support teams to ensure our products are the best they can be.
Must-have expertise and knowledge to be successful in this role:
- 6+ years experience working with modern JavaScript/TypeScript and back-end frameworks; we use React/Next.js, some Angular, and Python/Django, but if you have a strong eye for clean modular code then you will fit right in.
- Strong team player - we work in small product teams that work very closely together and are constantly collaborating in order to move as fast as possible.
- Eagerness to take on new challenges with a positive attitude and a growth mindset
Who we are:
Business owners are at the heart of everything we do at SumUp, which is why we create powerful, easy-to-use financial solutions to help them. With a founder’s mentality and a 'team-first’ attitude, our diverse teams across the globe work together to ensure small business owners we partner with can be successful doing what they love.
SumUp is a global financial technology company that allows businesses of all sizes to manage their business and accept payments both in-store and online. Named as Europe’s fastest-growing company in the Inc. 5000, SumUp supports over 4 million merchants globally and operates in 36 markets across Europe, the America's, and Australia. With our point of sale systems, card terminals and online services relied upon by businesses of all sizes, SumUp is the partner of choice for small businesses from every walk of life.
Why you’ll love working at SumUp
- Ownership & impact: you will be the technical and organizational lead for payments and loyalty in our largest market.
- Global reach: collaborate with engineering peers across Europe, LATAM and APAC while shaping products used by merchants in 37 countries.
- People-first culture: competitive compensation and a commitment to work-life balance.
- Cutting-edge tech: work on EMV kernels, payment certifications and large-scale micro-services that process billions in transactions annually.
Compensation:
- Base salary range is $155,000 - $175,000
- Stock Option Plan participation
- Compensation will be finalized based on the candidate’s experience and location
Benefits & More:
- We’re a truly global team of 3000+ people from 60+ countries, working to help small businesses across 3 continents.
- Startup environment and small, cross-functional teams
- A full suite of benefits including medical, dental and vision
- 22 days vacation days & 8 sick days plus 11 paid holidays
- 401(K) employer match and paid parental leave
- One month of sabbatical after every 3 years of employment
SumUp is an Equal Employment Opportunity employer that proudly pursues and hires a diverse workforce. SumUp does not make hiring or employment decisions on the basis of race, color, 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. SumUp also strives for a healthy and safe workplace and strictly prohibits harassment of any kind.
SumUp will not accept unsolicited resumes from any source other than directly from a candidate.
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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.
Other facts
About SumUp
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.
What you'll do
- You will maintain a high level of quality in code bases and own, design, and code product initiatives from start to finish. Collaboration with various teams is essential to ensure product excellence.
Ready to join SumUp?
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