Backend Engineer (Billing)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Backend Engineer (Billing) based in Switzerland.

Join a fast-growing fintech engineering team building a new-generation billing platform from the ground <up.You> will work on a core product module responsible for invoicing, payment retries, subscriptions, and monetization.The role gives you ownership over foundational billing infrastructure, public APIs, pricing engines, and revenue recovery <systems.You> will help design scalable solutions for complex B2B pricing and high-volume payment workflows.Working primarily in Go, you will collaborate with experienced engineers and cross-functional specialists in a newly established Billing Stream.There is minimal legacy to maintain, giving you the opportunity to make meaningful architectural decisions from the start.This is a high-impact environment where strong engineering practices, automated testing, reliability, and continuous delivery are central to how products are built.

Accountabilities

• Design and ship the foundational Products & Prices domain model and public APIs from the ground up.
• Build high-precision volume and graduated pricing engines capable of supporting complex, multi-tier enterprise billing requirements.
• Design and implement resilient billing services that minimize dependencies and eliminate critical single points of failure.
• Lead the automated payment retry engine across invoices to improve revenue recovery and reduce failed-payment impact.
• Develop reliable, scalable backend services capable of operating in high-load environments.
• Contribute to the evolution of the Billing 2.0 platform and help establish its architecture, standards, and engineering practices.
• Write and maintain comprehensive automated tests across unit, integration, functional, and end-to-end levels.
• Participate in code reviews, technical discussions, metrics and alerting practices, and continuous improvement of system reliability.
• Collaborate closely with product management, engineering, QA, and domain specialists to deliver billing capabilities end to end.
• Help build a modern, maintainable billing infrastructure with a strong focus on performance, reliability, and operational excellence.

Requirements

• 2+ years of backend engineering experience using Go, PHP, Kotlin, Java, Python, Node.js, or a comparable backend technology.
• Strong willingness to work with Go; both experienced Go engineers and strong engineers transitioning from another backend language are encouraged to apply.
• Demonstrated experience writing and maintaining automated tests, including unit, integration, functional, and end-to-end tests.
• Strong understanding of high-load system design principles and scalable backend architecture.
• Experience working with PostgreSQL and queues or streaming technologies.
• Proactive, communicative, independent, and results-oriented approach to engineering.
• Ability to take ownership of technical problems, make sound decisions, and drive solutions forward.
• Experience with payment systems or previous work in fintech or financial services is a plus.
• Familiarity with Kafka, AWS services, and CI/CD pipelines is advantageous.
• Comfortable working in a collaborative engineering environment with code reviews, automated testing, observability, metrics, alerts, and continuous delivery.

Benefits

• High-impact role with the opportunity to build a new billing platform and make meaningful architectural decisions rather than inheriting a mature legacy system.
• Opportunity to work on financial infrastructure supporting modern internet businesses across subscriptions, payments, chargebacks, fraud prevention, and indirect tax.
• Collaboration with a proven, results-driven engineering team in a rapidly scaling fintech environment.
• Modern engineering culture focused on technical discussions, code reviews, strong testing practices, metrics, alerts, and fully automated CI/CD.
• Significant career growth opportunities within a rapidly expanding organisation.
• 30+ days of paid time off.
• Unlimited sick leave.
• Health coverage.
• Free office meals.
• Apple equipment to support your work.
• Support for courses and conferences to encourage continuous learning and development.
• Sports and wellness benefits designed to support employee well-being.
• Employee referral program with a bonus for successful referrals.