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SumUp

Senior Backend Engineer - Bookings

SumUp · Warsaw, Poland; Warszawa, Masovian Voivodeship, Poland

Posted about 3 months ago

or apply directly on SumUp's site. We never take the application ourselves.

Is this posting real?

This role has been open
87 days
SumUp's roles stay open a median of 87 days
Reposted
No
Salary listed
No
1% of SumUp's roles list one
Ghost-job risk at SumUp
high
409 stale, 22 reposted of 409 open
Hiring momentum
564 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-29

Measured from postings appearing on and disappearing from SumUp's own greenhouse board since 2026-08-03. Full hiring picture for SumUp.

About this role

As a Senior Backend Engineer at SumUp, you will design, build, and maintain scalable backend systems for the Bookings product. You will collaborate with frontend and mobile engineers to enhance APIs and deliver new features, while also participating in technical planning and code reviews. Your role will involve optimizing performance and contributing to the technical roadmap for the Sell Online platform.

Our read on this posting2.8out of 5
benefits
5/5
freshness
1/5
career value
4/5
role clarity
4/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of SumUp as an employer.

What you need

  • 5+ years of professional backend engineering experience
  • Fluency in Kotlin (or Java) with deep experience in Spring Boot
  • Experience with PostgreSQL, Kafka, Docker, Kubernetes, and AWS
  • Understanding of RESTful APIs, distributed systems, and event-driven architectures (e.g. CQRS, Event Sourcing)
  • Experience with CI/CD pipelines, GitHub Actions, and observability tools like Grafana or Honeycomb
  • Ability to thrive in collaborative teams and mentor peers

Nice to have

  • Familiarity with gRPC, Protobuf, or performance optimisation at the backend/database level

What you get

  • Opportunity to work from a vibrant Warsaw office in a hybrid setup
  • Commitment to Diversity and Inclusion
  • Enrolment onto the Virtual Stock Option programme
  • Dedicated annual L&D budget of €2000
  • Fitness support with on-site gym and Multisport Card
  • Health insurance coverage for you and your family, plus life insurance

Worth weighing

  • Salary range is stated but offers above this range may be considered in exceptional circumstances
  • Candidates are encouraged to apply even if they don't meet 100% of the job criteria

Summarised from SumUp's posting. Read the full original.

Listed by SumUp on their greenhouse job board, last confirmed open on 2026-10-29. PitchMeAI is not the employer.

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