Senior Software Development Engineer, Core Infrastructure

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Development Engineer, Core Infrastructure based in Portugal. This is an excellent opportunity for an experienced Software Development Engineer to contribute to the core infrastructure of a sophisticated enterprise platform. In this role, you will design and build secure, scalable, and reliable backend systems that support mission-critical applications while improving product resilience, security, and operational excellence. Working within a collaborative international engineering environment, you will partner with cross-functional teams to solve complex technical challenges, influence engineering best practices, and deliver innovative solutions that have a direct impact on product performance and customer success. The position is ideal for engineers who enjoy tackling large-scale distributed systems, driving technical improvements, and mentoring engineering excellence.