Android Engineer, Point-of-sale

Flatpay

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.

Flatpay

ABOUT THE JOB At Flatpay, we're building products that make running a business simpler. Thousands of merchants rely on our payment solutions every day. As we continue expanding our POS offering, we're looking for a Senior Product Manager who can turn complex merchant needs into products that are intuitive, reliable, and commercially impactful. We're now scaling aggressively across Europe and investing heavily in product. This is not a role for someone who wants to manage a backlog from a distance. We need a product leader who enjoys spending time with customers, challenging assumptions, making difficult prioritization decisions, and working closely with engineers, designers, commercial teams, and leadership to shape the future of our POS platform. WHAT YOU'LL DO You'll own a meaningful slice of our POS product - the software that runs the front of house for thousands of restaurants, cafés, retail stores, and salons across Europe - and be accountable for delivering outcomes, not just features. Our merchants are not procurement teams at large enterprises. They're owner-operators. That means the bar for usability, reliability, and clarity is brutally high — a confusing settings menu or a slow checkout flow costs them real sales on a Friday night. You'll spend real time in those venues, not just in Figma. Your work will include: * Defining and driving product strategy for POS solutions across multiple merchant segments * Sit with merchants and watch them work. Learn the difference between what they say in interviews and what they actually do on a busy Friday lunch. Bring those insights back into the roadmap * Translating customer insights, business objectives, and technical constraints into clear product direction * Understand the critical merchant value and plan the MVP rather than big deliveries * Working closely with engineering and design teams to deliver high-quality solutions at pace * Using data, customer feedback, and market insights to evaluate product performance and guide decisions * Helping establish product management best practices as Flatpay continues to scale WHO YOU ARE We're less interested in whether you've worked with a specific framework and more interested in how you think and operate. We hope you are comfortable operating in a hyper-growth environment where the org chart and the roadmap both move fast. You likely bring: * 6+ years of product management experience in software, fintech, payments, POS, SaaS, or a similarly complex domain * Background launching products 0->1 and 1->10 into multiple European markets * The ability to navigate ambiguity and create clarity for teams around you * Experience working with cross-functional product development teams * Confidence communicating with both technical and non-technical audiences * A data-informed mindset without becoming data-dependent * Strong commercial instinct. You think about adoption, revenue, and unit economics, not just feature usage * Willingness to spend time in the field with merchants across our markets Bonus points if you have experience with: * Payments or acquiring * Point-of-sale systems * Merchant-facing products * Omnichannel commerce * Subscription or transaction-based business models * Familiarity with Android-based payment hardware (PAX, Ingenico, or similar) WHAT SUCCESS LOOKS LIKE After your 3 months, you have: * Built deep knowledge of merchant needs and operational realities across multiple markets * Established a clear product direction in a collaboration with other PMs and Product Director * Built deep knowledge of Flatpay product offering and identify gaps * Delivered meaningful improvements that merchants actively value * Created strong partnerships across product, engineering, design, commercial teams, and leadership * Contributed to a stronger product culture across Flatpay WHY FLATPAY? We're building in a market where reliability matters, customer expectations evolve quickly, and product decisions have a direct impact on real businesses. You'll join a company with ambitious growth plans, short decision-making paths, and the opportunity to influence products used every day by merchants across Europe. If you're excited by solving real-world problems, working closely with customers, and building products that combine software, payments, and commerce, we'd love to hear from you.

Sumup

Salary range: 15 000 - 20 100 PLN per month About the team SumUp’s Point-of-Sale (POS) solution empowers cafes, shops, bars, hair salons, and other businesses to operate efficiently and grow. It offers a wide range of features, including product catalogs, inventory management, business analytics, compliance support, and loyalty tools. Our POS solution integrates seamlessly into the SumUp SuperApp, which supports both our proprietary register hardware and mobile devices like tablets and phones. As an Android Developer, you’ll collaborate with a dynamic, cross-functional team of Product Managers, Product Designers, Engineering Managers, and fellow engineers. About the role We’re evolving toward a Kotlin Multiplatform (KMP) strategy, enabling shared development across Android and iOS. In this role, you’ll learn, refine, and help implement this technology, shaping the future of our mobile apps. You’re a developer who values user-centric design, precision, and seamless collaboration. You bring structure to communication and thrive in a cross-functional environment.  What you’ll do * Build new features for the item catalog within the SumUp SuperApp * Help improve the architecture of the application and contribute to our Kotlin Multiplatform strategy * Enhance and maintain our unified android app, distributed across 60+ countries, ensuring high-quality, scalable solutions * Shape the product’s evolution by identifying opportunities for improvement and contributing to daily decision-making * Write thorough documentation and implement robust testing for features before shipping * Collaborate closely with Designer, Product Manager and Android engineers to deliver a unified UX experience across platforms * Coach and mentor other engineers You’ll thrive in this role if: * You have 3+ years of experience in mobile engineering with Android and Kotlin. * You have 2+ years of experience working with Jetpack Compose. * You have a solid understanding of software design patterns (e.g., MVVM, MVI) and expertise in building modular, scalable app architectures. * You have good knowledge of reactive programming (Flow, Coroutines and Concurrency). * You have a strong grasp of testing best practices: knowing what to test, why, and how to write resilient tests. * You strive for clean code, and you are flexible to balance pragmatism and perfection. * You have a keen interest in multi-platform development using Kotlin Multiplatform. Why you should join SumUp: * 🌈 Commitment to Diversity and Inclusion: be part of a workplace that values and promotes diversity, fostering an inclusive environment where everyone's perspectives are respected and embraced  * 🚀 Enrollment onto our VSOP program: you will own a stake in SumUp’s future success  * 🚴 Fitness support: work out on-site at our gym or explore the city using the Multisport Card, subsidised by SumUp for access to sports facilities across Warsaw  * 🩺 Commitment to well-being: access health insurance coverage for you and your family, plus life insurance to further protect your peace of mind  * 🏖️ Generous time off: enjoy 26 days of paid leave plus public holidays and special leave days * 🌴 Break4me: 1-month sabbatical after 3 years of service  * 🔗 Referral Bonus: earn additional rewards by referring talented individuals to join the SumUp team   *Disclaimer The stated salary range represents the expected compensation for candidates who meet the core requirements of this role. Offers above this range may be considered in exceptional circumstances, subject to internal review and approval, where a candidate's qualifications, skills, or experience significantly exceed the role's standard expectations. Job Application Tip We recognise that candidates feel they need to meet 100% of the job criteria in order to apply for a job. Please note that this is only a guide. If you don’t tick every box, it’s ok too because it means you have room to learn and develop your career at SumUp.