Jobs for Developers

Staff Engineer - Backend Android

SumUpDenver, ColoradoFull-time$105k - $265k*Jan 29, 2024
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Staff Engineer - Backend

Can be in Denver Colorado, Boulder, Colorado or El Paso, Texas

Who you are:  

You’re an experienced, backend engineer who has built large, scalable systems that handle millions of daily requests.  You have the ability to design, develop, and stand up new services based on product needs.  You have experience across a range of mobile and web technologies. You are determined to provide reliable systems for the customers that consume them to help local businesses and communities thrive. 

Who we are:

We believe in the everyday hero. Those who have the courage to follow their passion and who have the strength and determination to realize their dreams.

Business owners are at the heart of all we do, so 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 financial technology company that allows businesses of all sizes to receive payments quickly and simply, 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 34 markets across Europe, the U.S., South America, and Australia.  With its 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.

What you’ll do:

  • Lead architecture and design for SumUp’s  most interesting and challenging technical problems
  • Pioneer solutions through collaboration, experimentation and innovation
  • You’ll maintain a high level of quality in our codebases through sound development practices including code reviews, instrumentation with monitoring and alerting systems, automated testing, and architecture reviews
  • Own, design, and code product initiatives from start to finish
  • You will work on and help to improve the platform upon which our core mobile (Android) and web APIs are built

What we're looking for:

  • Strong background in mobile (Android) as well as web design and code
  • A keen developer who will proactively drive core integrations and act as top-tier support for any complex questions they have.
  • Integrations use many different technologies: iOS, Android, Microsoft .NET, REST APIs, TypeScript, Python, OpenAPI and many others.
  • Candidate should be comfortable learning new technologies, codebases and integration flows.
  • Requires excellent communication skills.  Even more than technical capability, the staff Engineer is a “glue” to solutions across many teams–both internal and external.


  • 180-190k per annum
  • Compensation will be finalized based on the candidate’s experience and location

Benefits & More:

  • We’re a truly global team of 3200+ people from 60+ countries, working to help small businesses across 3 continents.
  • Startup environment and small, cross-functional teams 
  • Medical, Dental and Vision benefits, along with too many to list!
  • Benefits that holistically support your physical, and emotional wellbeing
  • Career Coaching & Development
  • 22 days vacation days & 8 sick days plus 11 paid holidays
  • 401(K) employer match and Paid Parental leave
  • 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, 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. 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.


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.

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