
Flatpay · København
ABOUT THE JOB Flatpay has become one of Europe's fastest-growing payment companies by helping merchants accept card payments in-store. Our Point of Sale system...
Flatpay has become one of Europe's fastest-growing payment companies by helping merchants accept card payments in-store.
Our Point of Sale system serves as the central engine of the business. It streamlines the merchant's entire workflow — from order
taking, product and inventory management, to payment processing, reporting, and compliance.
devices. No least manage synchronicity across multiple POS systems at shared locations in realtime.
that enables merchants to optimize their business and comply with local tax regulations.
As our merchants grow, so does the platform. Every new market introduces new payment methods, fiscal requirements and merchant
needs. Every new feature increases the depth and complexity of the product. And with our customer base doubling approximately
every six months, the demands on scalability, reliability and performance continue to grow.
This is a hands-on engineering role with significant ownership. You'll influence technical direction, contribute to architectural
decisions and solve the engineering challenges that come with building one of Europe's fastest-growing commerce platforms.
As a Senior Backend Engineer, you'll contribute far beyond implementation. You'll help shape technical direction while remaining
deeply involved in building products. You'll work closely with Product, Design and fellow engineers to build software that scales
across all dimensions: more merchants, more markets, more capabilities and increasingly sophisticated workflows.
governmental standards of our markets.
We're looking for experienced engineers who enjoy solving difficult problems and helping others succeed.
You'll be working with the following technologies; we don't expect experience with every technology listed; we're looking for
engineers who can learn quickly and help us build great products.
As part of our team, you'll join 2,000+ passionate Flatpayers dedicated to shaping the future of payments.
You'll help build a strategic new business area from the ground up, working on products that directly connect merchants and
consumers while shaping the future of online payments at Flatpay.
We offer an inclusive environment where engineers are trusted with ownership and encouraged to make an impact.
Our engineering teams work together from our Copenhagen office. We believe that close collaboration, quick feedback loops, and
solving problems side-by-side help us build better products, move faster, and create a stronger engineering culture.
We also provide plenty of perks including free slush ice, an on-site gym, a fully equipped gamer room, and much more.
If you're ready to help build and scale the future of payments, we'd love to hear from you.
ABOUT THE JOB Flatpay has become one of Europe's fastest-growing payment companies by helping merchants accept card payments in-store. Our Point of Sale system serves as the central engine of the business. It streamlines the merchant's entire workflow — from order taking, product and inventory management, to payment processing, reporting, and compliance. Some of the core capabilities include: * Product catalogue: Organizes how they manage their products, categories, modifiers and inventory * Order management: Basket, pricing, discounts, payments and managing tables and long-running orders among groups of customers. * Hardware integrations to barcode scanners, receipt and kitchen/bar printers and our different Mobile-, Premium- and Basic POS devices. No least manage synchronicity across multiple POS systems at shared locations in realtime. * Our reporting suite ensures cash management, end-of-day reports, various sales, turnover, staff, tax and compliance reports that enables merchants to optimize their business and comply with local tax regulations. As our merchants grow, so does the platform. Every new market introduces new payment methods, fiscal requirements and merchant needs. Every new feature increases the depth and complexity of the product. And with our customer base doubling approximately every six months, the demands on scalability, reliability and performance continue to grow. This is a hands-on engineering role with significant ownership. You'll influence technical direction, contribute to architectural decisions and solve the engineering challenges that come with building one of Europe's fastest-growing commerce platforms. WHAT YOU'LL DO As a Senior Android Engineer, you'll contribute far beyond implementation. You'll help shape technical direction while remaining deeply involved in building products. You'll work closely with Product, Design and fellow engineers to build software that scales across all dimensions: more merchants, more markets, more capabilities and increasingly sophisticated workflows. Your responsibilities will include: * Designing, building and evolving features across our Point of Sale platform platform. * Lead feature and platform initiatives involving multiple engineers, driving delivery from discovery through production * Build and maintain features in the Android POS platform in Kotlin/Compose that connects to printers, payment terminals and utilizes real–time communication via AWS MQTT. * Take ownership of features from design and implementation through deployment and maintenance * Drive architectural decisions and long-term technical improvements * Improve reliability, observability, performance, and security across the platform * Mentor engineers through coaching, code reviews, and knowledge sharing * Continuously improving our engineering practices, tooling and development experience * Contribute to testing, operational excellence and contribute to a collaborative team culture WHO YOU ARE We're looking for experienced engineers who enjoy solving difficult problems and helping others succeed. You likely bring: * 7+ years of professional software engineering experience * Strong experience designing and operating distributed systems * Demonstrated ability to lead technical projects involving multiple engineers and influence architectural decisions * Comfortable navigating ambiguity and helping shape new products and systems * The ability to break down complex problems into pragmatic, maintainable solutions. * Strong communication and collaboration skills * Experience building scalable backend platforms and APIs * Continuously improve CI/CD pipelines * A collaborative mindset and a willingness to challenge ideas constructively * Contribute to testing, operational excellence and contribute to a collaborative team culture * Experience within payments, fintech, e-commerce, SaaS, or high-scale transaction systems is a plus You'll be working with the following technologies; we don't expect experience with every technology listed; we're looking for engineers who can learn quickly and help us build great products. * Kotlin, Android, Java * Jetpack Compose, MVVM * Dagger Hilt, Room, DataStore * Retrofit, AWS MQTT * JUnit, Espresso, Robolectric * CI/CD with GitHub Actions * Targeting hardware such as scanners, printers & payment terminals. WHY FLATPAY? As part of our team, you'll join 2,000+ passionate Flatpayers dedicated to shaping the future of payments. You'll help build a strategic new business area from the ground up, working on products that directly connect merchants and consumers while shaping the future of online payments at Flatpay. We offer an inclusive environment where engineers are trusted with ownership and encouraged to make an impact. Our engineering teams work together from our Copenhagen office. We believe that close collaboration, quick feedback loops, and solving problems side-by-side help us build better products, move faster, and create a stronger engineering culture. We also provide plenty of perks including free slush ice, an on-site gym, a fully equipped gamer room, and much more. If you're ready to help build and scale the future of payments, we'd love to hear from you.
About us: Founded in Copenhagen, Denmark, in 2014, Templafy’s success is built by our 60+ employee nationalities found at offices around the world. We believe that when people feel valued, heard, and empowered, they perform at their best—creating a win for all. Our unique product and dedication to innovation and excellence have raised over $200 million in funding from top investors like Insight Venture Partners, Seed Capital, Dawn Capital, Damgaard Company and Golub Capital. About the role and company: I'm using AI to write the job posting, and I asked Codex to use the Slack connector to collect some "cultural proof points" about what it's like working at Templafy. This is what it came up with: Templafy engineering culture comes across as pragmatic, product-close, technically opinionated, and unusually open about trade-offs. · Engineers are expected to think like product builders, not just implementers. Threads often connect technical work to customer demos, pilots, product quality, adoption, and user feedback · Pragmatism is a real value. There’s repeated language around simple/explicit code, logical PR chunks, avoiding feature creep, solving the 80% case first, building MVPs, and getting something testable into users’ hands quickly · Quality matters, but in a practical way. Tests, E2E coverage, evals, pipeline health, flaky tests, feature-flag cleanup, and technical health all show up as shared concerns · Engineers are candid and trusted to challenge scope. I saw people questioning whether work should be bugs vs feature requests, whether backlog items are clutter, when to pause work, and when a “quick fix” is acceptable · Cross-functional collaboration is very present. PMs, design, solutions, support, security, platform, and product engineering are all in the same threads negotiating quality bars, customer urgency, UX, risk, and ownership · AI/tooling curiosity is strong, but not naive. The AI guild and engineering channels show people experimenting with code review agents, AGENTS.md, evals, Codex/Claude workflows, guardrails, and agentic SDLC, while also worrying about learning, friction, false positives, security, and long-term maintainability · There’s a bias toward async feedback and shared learning. Moving sprint review-style updates into short videos and Slack feedback is a good culture signal: fewer meetings, more continuous visibility · Ownership is distributed. People jump in to unblock, sanity-check, investigate, create PRs, clean up flags, or hand over work when someone is away. The tone is informal but accountable Small caution: I would avoid selling the culture as “perfectly polished.” The honest version is stronger: Templafy looks like a place where engineers have real agency, real product context, and real technical messes to improve. The rest of this job posting is probably more like what you'd expect. What You’ll Do In Product Engineering, you will help build and improve product experiences used by Templafy customers. You will work with product managers, designers, and other engineers to understand customer problems, shape solutions, and deliver features from idea through production. You will: * Build, improve, and maintain customer-facing product features * Collaborate with Product and Design to turn ambiguous problems into usable solutions * Use AI-assisted development tools thoughtfully as part of your everyday engineering workflow * Make technical decisions within your area and contribute to broader architecture discussions * Write reliable, maintainable code that fits existing patterns and systems * Use tests and fast feedback loops to support confident delivery * Build early versions of ideas to evaluate real behavior instead of debating hypotheticals * Help simplify product paths, remove complexity, and make features easier to test and maintain * Debug issues, improve performance, and support production systems * Help the team balance delivery speed, technical quality, and customer impact * Contribute to engineering practices, code reviews, and technical discussions What We’re Looking For We’re looking for someone who enjoys product context and wants to be part of shaping what gets built, not only how it gets built. You probably have: * Strong experience building production software in a product engineering team * Experience using AI-assisted engineering tools in real development work * The judgment to use AI tools without outsourcing your understanding of the system * Good technical judgment and the ability to make pragmatic trade-offs * Experience with modern web application development * A solid understanding of software design, testing, and maintainability * Comfort working across frontend, backend, or full-stack * Strong communication skills, especially in async and cross-functional settings * A bias toward making discussions concrete through prototypes, tests, and working software * A sense of ownership over outcomes, not just assigned tasks * The ability to challenge scope constructively and keep work focused Nice To Have * Experience with SaaS or B2B software * Experience with cloud platforms, CI/CD, observability, distributed systems * Experience building AI-enabled products, agentic workflows, evals, or prompt/tooling systems * Interest in improving developer experience, technical health, and team practices What You’ll Join You’ll join a product engineering team that cares about building useful software, learning quickly, and keeping the systems healthy enough that we can keep moving. We value people who can ask good questions, make things simpler, and help the team find the right trade-off when there is no perfect answer. This is a good role for someone who wants meaningful product ownership, close collaboration with non-engineering colleagues, and enough technical complexity to make simplification genuinely valuable. We are looking for someone who can move fast, but who also knows that the fastest teams are usually the ones that keep their systems understandable. Tech stack Backend: C# / .NET, ASP.NET Core, Entity Framework Core, SQL Server Frontend: TypeScript, React, HTML/CSS/SCSS AI: LLM integration & agentic AI (tool-calling, multi-agent) Cloud/Infra: Azure, Kubernetes, Docker, Terraform DevOps: Azure DevOps / Pipelines, Git Testing: xUnit, Playwright Employee Benefits: * Employee equity program * Private health insurance * Company lunch contribution * Phone and broadband covered by company * Centrally located office – easy access to public transportation * Company events and team activities * Flexible work environment * Gympass Subscription * Calm App Subscription At Templafy, we’re all about building an inclusive culture where talented people come together to spark creativity in a dynamic, collaborative space. Strong relationships and teamwork are at the core of everything we do, and with our flat structure, everyone’s ideas count regardless of your role or experience. We’re big on social events that foster connection and build a diverse, empowering community. From celebrating milestones to participating in employee resource groups or eating lunch together, we create space for meaningful team bonding. Our mission goes beyond just building a product; we’re shaping the future, and we’d love for you to be a part of this epic journey with us. Templafy is a workplace of belongingness. To us this means that you have a voice, you dare to speak up, and your voice is heard. We focus on offering an environment that allows all employees to feel that they belong regardless of race, color, ancestry, religion, gender, gender identity, genetic information, parental or pregnancy status, national origin, sexual orientation, age, citizenship, marital status, disability, or other status.
ABOUT THE JOB Flatpay has become one of the fastest-growing payment companies by helping merchants accept payments in-store and online. But with 100,000+ merchants relying on us today, payments are only part of running a business — every transaction eventually needs to land in the books, and that's still far too much manual work. Accounting and Bookkeeping is one of Flatpay's most strategic engineering domains. We're building the products and platforms that turn transaction data into clean books and accurate financial records — including integrations with the accounting systems our merchants already use. As a Senior Software Engineer, you'll play a key role in defining the technical direction of Flatpay's accounting platform — from how we model financial data, to how we build systems that handle real-world bookkeeping at scale and connect reliably with the third-party systems on the other end.This is an opportunity to join a company that has grown from startup to unicorn at record speed. You'll have significant ownership, the freedom to drive technical decisions, and a direct impact on tools that 100,000+ businesses can rely on. As we expand across markets — each with its own accounting practices, tax rules, and reporting requirements — you'll help shape how Flatpay scales financial infrastructure. If you care deeply about the accuracy financial data demands, this is a domain where your work will play a central role in Flatpay's future growth. WHAT YOU'LL DO * Design and build scalable systems that power Flatpay's accounting and bookkeeping capabilities * Lead feature and platform initiatives involving multiple engineers, driving delivery from discovery through production * Take ownership of features from design and implementation through deployment and maintenance * Drive architectural decisions and long-term technical improvements * Build APIs, services, and data models that handle financial data accurately and at scale * Improve reliability, observability, performance, and security across the platform — with particular attention to the accuracy and consistency that financial data requires * Partner with engineers, product managers, and stakeholders to drive technical and product outcomes * Help establish engineering standards and best practices as the Accounting and Bookkeeping domain continues to grow WHO YOU ARE * 7+ years of professional software engineering experience * Strong experience designing and operating distributed systems * Demonstrated ability to lead technical projects involving multiple engineers and influence architectural decisions * Experience building scalable backend platforms and APIs, especially ones that integrate with internal and third-party systems * Comfortable navigating ambiguity and helping shape new products and systems * Strong communication and collaboration skills * Experience within payments, accounting and bookkeeping systems, or financial data platforms is a plus You'll be working with technologies such as the following. We don't expect experience with every technology listed below. We're looking for engineers who can learn quickly and help us build great products. Backend * Java, Spring Boot * MySQL * REST APIs & Event-Driven Architecture * Domain Driven Design * Docker, AWS Frontend * TypeScript * React * TanStack Query * Jest * Playwright * i18n, feature flags Platform & Delivery * GitHub Actions * CI/CD * AWS ECS * Observability & Monitoring WHY FLATPAY? As part of our team, you'll join 2,000+ passionate Flatpayers dedicated to shaping the future of payments. You'll help build a strategic new business area from the ground up, working on products that directly connect merchants and consumers while shaping the future of online payments at Flatpay. We offer an inclusive environment where engineers are trusted with ownership and encouraged to make an impact. Our engineering teams work together from our Copenhagen office. We believe that close collaboration, quick feedback loops, and solving problems side-by-side help us build better products, move faster, and create a stronger engineering culture. We also provide plenty of perks including free slush ice, an on-site gym, a fully equipped gamer room, and much more. If you're ready to help build and scale the future of payments, we'd love to hear from you.