We are currently looking for a Staff Product Engineer, Backend in Spain. This is an exceptional opportunity to help shape the future of modern observability platforms by building scalable backend systems that power mission‐critical billing, metering, and infrastructure services. As a senior technical leader, you will also mentor engineers, improve engineering standards, and influence the long‐term evolution of backend architecture and observability practices across the organization.

Lead the architectural vision and technical direction for backend systems focused on billing, metering, marketplace integrations, and revenue infrastructure. Develop and optimize usage‐based billing and metering solutions capable of accurately processing large volumes of data events. Drive integrations with payment providers, cloud marketplaces, CRM systems, and internal reporting platforms.

Establish engineering best practices related to code quality, testing, observability, reliability, and security.



Proactively identify technical risks, improve platform resilience, and support world‐class monitoring and operational processes. Extensive experience designing and scaling distributed backend systems, with deep expertise in Go; Java knowledge is considered a plus.

Strong background in billing systems, metering platforms, or usage‐based pricing models;

experience with Stripe APIs is highly advantageous. Proven ability to architect high‐performance, reliable backend infrastructure in cloud‐native environments. Solid understanding of observability concepts, OpenTelemetry, monitoring practices, and operational excellence. Strong focus on data accuracy, testing, and reliability, especially in systems connected to financial operations. Fully remote and adaptable work environment within Europe. Monthly phone and internet allowance.

📌 Staff Backend Engineer - Billing & Observability (Remote) (Madrid)
🏢 Jobgether
📍 Madrid