Frontend engineer, Point-of-sale

Flatpay
Copenhagen, DenmarkPosted Jul 12, 2026
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Skip to main contentBack to all jobsFrontend engineer, Point-of-saleCopenhagenFull-timePermanent employeeApply for this jobAbout the jobFlatpay 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:Merchant portal: The web platform our customers use as entry to all management needs on our capabilities below.Product catalogue: Organizes how they manage their products, categories, modifiers and inventoryOrder 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 doAs a Frontend 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:Own and implement merchant-facing features in the Merchant Portal, Contribute to improving and maintaining the custom-built UI component library in strong collaboration with the UX teamEngage in architectural improvements in the monorepo workspaceLead feature and platform initiatives involving multiple engineers, driving delivery from discovery through productionTake ownership of features from design and implementation through deployment and maintenanceImprove reliability, observability, performance, and security across the platformContinuously improving our engineering practices, tooling and development experience.Contribute to testing, operational excellence and contribute to a collaborative team cultureWho you areWe're looking for experienced engineers who enjoy solving difficult problems and helping others succeed.You likely bring:3-12 years of professional software engineering experienceExperience designing and operating distributed systemsDemonstrated ability to lead technical projects involving multiple engineers and influence architectural decisionsComfortable navigating ambiguity and helping shape new products and systemsThe ability to break down complex problems into pragmatic, maintainable solutions.Strong communication and collaboration skillsContinuously improve CI/CD pipelinesA collaborative mindset and a willingness to challenge ideas constructivelyExperience within payments, fintech, e-commerce, SaaS, or high-scale transaction systems is a plusYou'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.TypeScript +...

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