Senior Frontend Engineer

ViaBill

ViaBill operates at the intersection of the eCommerce, payments and consumer credit sectors, and is an industry pioneer and early market entrant in the BNPL industry, which is experiencing rapid growth. Becoming the best at something isn’t easy. It takes skill, hard work, and an unmatched level of ambition and determination. Our team is international, experienced and most of all, hardworking. In just a few years, we’ve grown from our first office in an art gallery in Denmark to having our teams located all over the globe.  From a handful of customers to handling transactions worth more than $150M per year, we aren’t afraid of new challenges and new markets. Our strategy has been validated with external investment from leading VC’s Headline and BlackFin Capital Partners. We’re hiring a Senior Frontend Developer to join our product engineering team. Fully remote, open to candidates based anywhere in the EU. You’ll build merchant-facing and consumer-facing products in Angular with NgRx, shipping features that directly affect how people pay and how merchants grow.

Flatpay

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.

Flatpay

ABOUT THE JOB You’ll be joining a high-performing and rapidly expanding team of engineers at one of Denmark’s fastest-growing companies. Together, we’re building and scaling the internal platforms that power our growth—including CRM system, sales tools, and operational software used daily and enabling our commercial organization to operate efficiently at scale as we continue our European expansion. This is an opportunity to be part of a company that has grown from startup to unicorn at record speed. As we continue to expand into new markets and serve an ever-growing customer base, you’ll work on challenges that come with operating products at scale. You’ll have significant ownership, the freedom to drive technical decisions, and a direct impact on the solutions used by businesses every day. As we grow, so will your opportunities to develop your skills, take on new responsibilities, and help shape the future of commerce across Europe. WHAT YOU'LL DO * Design and deliver scalable, maintainable, and high-quality solutions that drive business impact * Enhance and evolve core internal systems to improve reliability, performance, and user experience * Continuously optimize CI/CD pipelines and infrastructure to accelerate delivery and increase stability * Collaborate closely with internal stakeholders to shape ideas, define requirements, and turn them into actionable plans * Lead cross-functional projects from concept to successful delivery * Mentor and support team members, fostering technical growth and engineering excellence * Drive architectural improvements and champion best practices to ensure the platform scales for the future WHO YOU ARE * 5+ 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 * Comfortable navigating ambiguity with pragmatism and helping shape new products and systems * Strong communication and collaboration skills 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 PLATFORM & DELIVERY * GitHub Actions * CI/CD * AWS ECS * Observability & Monitoring * Feature flags WHY FLATPAY? You’ll help build and scale our internal platform, creating tools that empower teams across Flatpay and shape the future of how we operate, and scale our products. 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 are ready to be part of this exciting journey, we would love to hear from you today.