Senior Backend Developer - Booking & Payment Platform

Be part of scaling a global platform used by millions. We are looking for a Senior Backend Developer to help build and evolve our Booking & Payment platform as our customer base continues to grow. This is a role for someone who enjoys owning end-to-end solutions, designing reliable and robust systems, and collaborating across teams to deliver reliable, scalable services.

What you´ll do:

• Design, build, and maintain backend services and APIs for a complex Booking & Payment platform with more than 3 million users, with a strong focus on quality, performance, and scalability. 

• Take ownership of technical solutions end-to-end: from design beyond single components: analyze requirements, propose architectures that span multiple systems, and to align with dependencies owned by other teams. 

• Work hands-on in Node.js using JavaScript and TypeScript, contributing to architecture, implementation, code reviews, and technical decisions. 

• Work cross-functionally and cross-team: with Product, QA, and UI/UX on requirements and delivery; and on APIs, contracts, and integrations. 

• Share knowledge through mentoring, pairing, and clear technical communication.

What you bring 

• 5+ years of professional software development experience, with a track record of owning backend work end-to-end in production systems: not only implementing tasks, but thinking through the whole solution (data, APIs, failure modes, rollout, and ongoing operation). 

• Demonstrated experience with system and solution architecture: breaking problems into services or major components, defining interfaces and ownership, and planning work that coordinates your team’s systems with those of other teams. 

• Strong commercial experience with server-side Node.js and JavaScript/TypeScript, including high-quality, maintainable, testable code and pragmatic trade-offs. 

• Solid understanding of architectural principles and backend fundamentals. 

• Pragmatic approach to testing and CI/CD. 

• Excellent communication and collaboration skills; able to facilitate alignment with other engineering teams and explain technical choices to non-engineering partners. 

Nice to have 

• Experience with payment platforms or e-commerce / in-person payment flows (how gateways, acquirers, and schemes fit together.

• Familiarity with financial back-office concerns such as bookkeeping, reconciliation, settlements, or reporting. 

• Experience working with cloud providers such as AWS and/or Azure and designing or operating services on them. 

The Office  

We have just moved to our state-of-art HQ in Hørsholm, located at DTU Science Park. We take great pride in the building we designed! The office features bright meeting rooms, coffee areas to catch up with colleagues, a large testing arena with simulators available for employees and a fitness centre, everything surrounded by a beautiful forest and respecting the environment. We made sure to utilize the newest technologies to be energy efficient and be mindful of ventilation and sound propagation. 

The cherry on top is our canteen: with an indoor and outdoor area to enjoy the fresh food prepared by our own kitchen staff. 

Join the home of a powerful sports brand and a one-of-a-kind technology  

Our proprietary technology is based on expert knowledge about radar, computer vision, data, and software engineering. Our solutions are developed by specialists who endlessly explore and challenge new technical boundaries. Trackman’s blend of cutting-edge technology, sports, and continued growth make our company an outstanding place to work. 

Our work culture is entrepreneurial, ambitious, and rewarding as you get to collaborate with inspiring colleagues and interact with the leaders of golf, baseball, and football. Based on a unique brand reputation, we are proud to work in close partnership with the top athletes, organizations, and teams that rely on our technology to stay ahead of the race. 

We are a Danish company founded, owned, and managed since 2003 by three entrepreneurs with a strong passion for sports. Today, we have a global footprint with our headquarters located in Denmark (Hørsholm) and offices in New York, Phoenix, Seoul and Tokyo. We employ over 1000+ people worldwide, half of which work in Denmark, where most hardware and software products are developed, tested, and manufactured.  

Where innovation happens 

At Trackman, we know that great people make great products. We believe that teams thrive, and innovation sparks in an atmosphere where people are encouraged to think for themselves, where everybody’s voices are heard, and where the best ideas prevail in the pursuit of exceptional solutions. This mix makes Trackman an inspiring company – for our customers and colleagues.  

Share our Passion! 

Applications are continuously assessed, so please send your application as s