Senior Backend Engineer - Commercial Systems and Intelligence

Job Overview

The Senior Backend Engineer - Commercial Systems and Intelligence role at SumUp represents one of the more compelling openings in the general space this season. Operating out of Cologne, North Rhine-Westphalia, Germany, this full time position is built for professionals who want their work to count — both for the customers they serve and for their own career trajectory.

Across the past few years, SumUp has refined what it looks for in this kind of role. The person hired as Senior Backend Engineer - Commercial Systems and Intelligence will own a clear scope from day one, partner closely with cross-functional teammates, and have a direct line into the decisions that shape the wider general function. Expect a transparent onboarding plan, well-documented systems and a manager who treats coaching as part of their job — not an afterthought.

In short, this is a role for someone who wants the practical advantages of a mature employer — clear processes, real benefits, sane working hours — without giving up the energy and ownership of a smaller team. If that combination sounds right, the sections below will help you decide whether your background is the kind of fit they are hoping for.

Key Responsibilities

As the next Senior Backend Engineer - Commercial Systems and Intelligence at SumUp, your work will be visible from the first week. The responsibilities below are not a wish-list — they are an honest sketch of what the role looks like in practice, refined over multiple hiring cycles.

• Stay close to industry developments relevant to general, and bring back the ideas worth experimenting with — without chasing hype for its own sake.
• Own end-to-end delivery of general projects assigned to your remit, from initial scoping through to launch, post-launch monitoring and iteration based on real-world feedback.
• Participate in code reviews, design reviews, planning sessions and retrospectives as a thoughtful contributor — giving feedback that is direct, kind and grounded in evidence.
• Mentor more junior teammates informally: pair on tricky problems, share resources, and help create the kind of environment where good questions are welcomed.
• Collaborate daily with engineering, design, product, operations and customer-facing colleagues to make sure your work is grounded in what users actually need, not just what is easy to build.
• Maintain clear, up-to-date documentation of your processes, decisions and outcomes so that teammates, new hires and adjacent teams can pick up context without needing a meeting.
• Communicate progress and risk clearly and proactively. If something is at risk of slipping, your manager and stakeholders hear it from you first, with options attached.
• Identify recurring problems, propose pragmatic fixes, and lead the implementation of those fixes with measurable success criteria defined up front.

Requirements & Qualifications

SumUp is deliberately specific about what makes a candidate succeed in this role. Treat the list below as a strong guide rather than a strict checklist — the team is genuinely open to non-traditional backgrounds when the underlying skills are clearly demonstrated.

• A pragmatic approach to problem-solving — breaking large, ambiguous problems into smaller, testable steps, and being willing to revise your plan when the evidence calls for it.
• Comfort working asynchronously across time zones. Most coordination happens in writing, so clarity in messages, tickets and documents matters as much as clarity in calls.
• Demonstrable hands-on experience in a general-related role, ideally with a portfolio, case studies or references that show the kind of work you have shipped and the impact it had.
• Eligibility to work in the location specified in the listing — visa sponsorship may be available for the strongest candidates; check the official application page for current policy.
• Strong written and verbal communication in English. You should be comfortable explaining technical or complex decisions to non-specialists without being either condescending or vague.
• Self-direction without isolation: you can run with a problem, but you also know when to ask for help, when to surface trade-offs and when to escalate.
• A track record of being a good teammate. Technical skill matters, but so does how you behave in code reviews, retrospectives and difficult conversations.

Benefits & Compensation

Compensation for this full time role is structured to be competitive in Cologne, North Rhine-Westphalia, Germany and to reward both contribution and tenure. Full numbers and region-specific details are confirmed during the interview process; the items below describe the standard package.

• Generous paid time off — typically including annual leave, public holidays, sick leave and additional days for personal or family events.
• Performance-linked bonus or equity, depending on the role and seniority.
• Competitive base salary benchmarked against current market data, reviewed at least once a year.
• Parental leave that goes meaningfully beyond statutory minimums in most regions.
• Home-office stipend and a refresh cycle for laptop, monitor and accessories.
• An annual learning and development budget you can spend on conferences, books, courses or coaching.
• Mental-health support, including access to confidential counselling and structured time off for recovery when you need it.
• Health, dental and vision cover for you and (in most markets) your dependants.

About SumUp

SumUp has built its reputation in the general space by focusing on the unglamorous fundamentals: clear writing, well-documented systems, careful hiring and steady investment in the people who already work there. The company has grown deliberately rather than chasing headlines, and that shows up in the day-to-day experience of the team.

Customers, partners and former employees consistently describe the organisation as straightforward to work with. Internal practices match the external message: decisions are written down, leadership is reachable, and difficult conversations happen early rather than being deferred.

For a Senior Backend Engineer - Commercial Systems and Intelligence, joining SumUp means inheriting a foundation of good defaults — solid tooling, sensible processes, a culture of honest feedback — and being trusted to build on top of them rather than constantly fight them.

Work Environment & Culture

New joiners frequently mention how quickly they felt they could speak up. There is no expectation that you stay quiet for the first six months; on the contrary, the team explicitly invites fresh eyes on systems, documents and processes that long-time employees have stopped questioning.

Culturally, SumUp is built around a few simple commitments: do honest work, default to writing things down, treat people as adults, and protect deep-focus time. Meetings exist when they are the right tool — and not as a substitute for thinking. Most communication happens asynchronously in shared documents and threaded discussions, which means your evenings and weekends genuinely belong to you.

Diversity, equity and inclusion are treated as practical operating commitments, not a marketing line. Hiring panels are deliberately structured, salary bands are documented, and feedback channels exist for anyone who feels the team is falling short in practice.

Career Growth & Development

SumUp treats career growth as a shared responsibility. The company commits to giving you the structure, feedback and opportunities you need; you commit to engaging with that structure honestly. The result, for most people who stay more than a year, is a meaningful step up in scope, skill and seniority.

• Mentorship programmes that pair you with senior colleagues inside and outside your immediate team.
• Twice-yearly structured performance reviews, with lightweight monthly one-to-ones in between so nothing is a surprise.
• A documented career framework that shows exactly what is expected at each level and how to move between them.
• Conference and speaking support if you want to grow your public profile in the industry.
• Internal mobility: it is genuinely possible — and encouraged — to move between teams or functions once you have established yourself.

How to Apply

Applying for this Senior Backend Engineer - Commercial Systems and Intelligence role is intentionally straightforward. There is no DP Jobs sign-up, no paywall and no middle step — you apply directly with SumUp through their official channel.

• Click the green Apply on official site button on this page. DP Jobs never collects your application — you go directly to SumUp's own careers portal, which is the only verified channel for this role.
• Read the official posting carefully. Even though we summarise the most important details here, the employer's own page is the source of truth for benefits, salary banding, work-authorisation requirements and contact details.
• Prepare a tailored CV (one to two pages) and a short, specific cover note. Reference one or two concrete examples of work that match this role's responsibilities — not a generic introduction.
• Submit through the official portal. Save a copy of your submission and the date you applied; if you do not hear back within two to three weeks, a single polite follow-up is appropriate.
• If invited to interview, treat the first conversation as a two-way fit check. Have your own questions ready: about the team you would join, the metrics that define success, and the realities of day-to-day work.