Summary
Javier Losada is a software engineer with 13 years of experience building large-scale, resilient distributed systems from infrastructure to product. He has driven high-throughput platforms at Spotify and Skyscanner—designing a cloud distributed cache serving hundreds of services at hundreds of millions of QPS and reworking flight timetables to cut processing from hours to minutes. Comfortable across Java, Python, Kubernetes and cloud providers, he blends hands-on implementation with SRE-style ownership, SLO-driven operations and custom client libraries for dynamic topologies. His background includes architect and squad-lead roles at Telefónica, fintech integrations at Verse, and systems integration for mission-critical airport systems, showing an ability to move between domain constraints and platform engineering. Based in Barcelona, he combines deep protocol- and performance-focused experience with a history of shipping durable, declarative infrastructure and operator-driven deployments. Notably, he pairs low-latency systems thinking with practical product integration—e.g., payments and telecom M2M—so solutions are both scalable and operationally robust.
14 years of coding experience
19 years of employment as a software developer
UPC Universitat Politècnica de Catalunya
Postgraduate in New Technologies Information Technology, Postgraduate in New Technologies Information Technology at Fundació Politecnica de Catalunya