- Company: Sum Up
- Location: Berlin, Germany
- Salary: €2,000/wk
Sum Up at a glance
sumup.com- Founded 2011
SEC filings mentioning "SumUp": 187 — search EDGAR
399 employees covered under a retirement plan (2025 filing) — via DOL Form 5500 / EFAST2
Registered as a global legal entity (LEI 984500CC08275B948278, US) — via GLEIF
SumUp is a British fintech founded in 2011 and based in London. It sells EMV card readers plus online payments and business banking tools for merchants. Recent coverage notes European consumer banking expansion, a Canada launch (38th market), an Upvest investing partnership, and a consumer account that rewards shopping small (FinTech Global, Finovate, FF News, Sifted).
2,638 Wikipedia views in July 2026 — a rough gauge of public visibility.
Senior Platform Engineer at SumUp in Berlin, Germany (Full Time, No Remote)
About the Role
At SumUp, our contact centre platform is a critical component that ensures merchant support runs smoothly across all global markets. As a Senior Platform Engineer, you will take full technical ownership of this space, reviewing current setups, driving new technology implementations, and leading AI-powered support initiatives.
- Review the current contact centre setup to identify areas for improvement
- Design and enhance automation and AI-powered self-service solutions, including conversational AI agents and intelligent call routing
- Administer and evolve our Five9 environment, maintaining integrations with internal systems via APIs and Salesforce
- Lead the implementation of AI voice solutions, including an Agent Copilot tool for real-time support during calls
- Collaborate closely with operations, product, and engineering teams to align on tooling decisions that reduce friction for merchants and agents
- Mentor junior team members to build contact centre and AI capability across the team
What You Bring
We are looking for a Senior Platform Engineer with solid experience in contact centre platform development and administration, hands-on knowledge of Five9 or similar platforms, and strong API integration skills. Proficiency in JavaScript and Salesforce is required, along with comfort working in distributed systems environments.
- Experience building AI tools such as LLM APIs, conversational AI platforms, or automation frameworks
- A deep understanding of how to apply these tools to improve support operations
About SumUp
SumUp is a global payments technology company that provides businesses with the tools they need to accept and manage payments. Our mission is to make it easy for anyone to start, run, and grow their business.
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Explore Sum Up online
What people say about Sum Up
- Ask HN: How to deal with a hard to work with Start-up CEO?
- Living in Switzerland ruined me for America and its lousy work culture
- The 'No True Programmer' Fallacy
- Ask HN: What's the hardest problem you've ever solved?
Recent news
- SumUp expands into consumer banking across Europe - FinTech Global
- SumUp Launches in Canada, its 38th Market - Finovate
- SumUp Partners with Upvest to Launch In-app Investing, Enabling Merchants to Grow Their Cash with Money Market Funds - FF News
- SumUp launches consumer account paying users to shop small - Sifted
- Iowa Agronomists Share One Word to Sum Up June’s Impact on the Corn Crop - Successful Farming
Aggregated from public discussions and news; opinions are the authors’ own.
Working in Berlin, Deutschland
Weather right now in Berlin, Deutschland: checking… · Local time: · Air quality: · Daylight: · UV index: · Wind: · Pollen:
Berlin is Germany’s capital and largest city, with about 3.7 million residents inside city limits—the biggest city population in the EU. It is also a German state, compact in area and bordered by Brandenburg. This role is listed on-site in Berlin.
🇩🇪 Relocation safety for Germany: Very Safe — via Warnely, CC BY 4.0
National unemployment rate in Germany: 3.7% — via World Bank
GDP per capita in Germany: $60,496 — via World Bank
Consumer price inflation in Germany: 2.2% (annual) — via World Bank
Real GDP growth in Germany: 0.2% (annual) — via World Bank
Statutory minimum wage in Germany: €2,343/month — via Eurostat
Cost of living in Germany: 9.1% above the EU average — via Eurostat
Job vacancy rate in Germany: 2.8% — via Eurostat
Average hours worked per year in Germany: 1,332 — via OECD
- Elevation 36m (118 ft)
About this role & career path
Senior Platform Engineer sits above hands-on platform work: you set standards for reliability, guide juniors, and shape how SumUp’s payment stack is built and run. Growth often moves toward staff/principal platform, engineering management, or specialized reliability/security tracks in fintech.
Build the skills for this role
- freeCodeCamp — Full Stack curriculum (free)
- Saylor Academy — Computer Science courses (free)
- CS50 (Harvard, via edX) (free to learn)
- Microsoft Learn — developer training paths (free to learn)
Free & low-cost learning resources
- freeCodeCamp — Full Stack curriculum (free)
- Saylor Academy — Computer Science courses (free)
- CS50 (Harvard, via edX) (free to learn)
- Microsoft Learn — developer training paths (free to learn)
Expect deep dives on distributed systems, Kubernetes/cloud ops, incident response, and payment-adjacent reliability. Prepare stories on SLOs, safe rollouts, and debugging production issues. Be ready to discuss how platform choices support merchant card acceptance and banking features.
Strong fit if you enjoy owning platforms behind high-volume fintech services and prefer Berlin on-site work at a growing payments company rather than pure product feature coding.
Job details above are provided by the employer/source. The sections on this page are compiled from public data sources with AI assistance.
Accommodations: if you need a workplace accommodation to apply for or perform this job, see ADA.gov or EEOC.gov for guidance on your rights and how to request one.
Listing facts
- Role Senior Platform Engineer
- Employer Sum Up
- Location Berlin, Germany
- Type Full Time
- Pay (from listing) €2,000/wk
- Posted August 19, 2026
- Apply by September 18, 2026
- Country Germany
- Overview Full job description on this page (295 words)
Facts above come from this job record on Get A Job.AI — not copied from third-party review sites.
Public discussions & open sources
Attributed public threads and profiles — not employee reviews or star ratings.
- Hacker News — Ask HN: How to deal with a hard to work with Start-up CEO?
- Hacker News — Living in Switzerland ruined me for America and its lousy work culture
- Hacker News — The 'No True Programmer' Fallacy
- Hacker News — Ask HN: What's the hardest problem you've ever solved?
Cached public sources (Hacker News, Dev.to, GitHub, etc.).
Employer website
Explore related openings
6 other opening(s) at Sum Up on Get A Job.AI
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- Senior Backend Engineer
- Full Stack Engineer – Billings & Subscriptions
- Senior Backend Engineer – Activation and Revenue
- Senior Backend Engineer
- Senior Backend Engineer
Occupation family: Platform Engineer
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