Joining a fast-growing European logistics tech company building the infrastructure that makes last-mile delivery smarter, greener, and more reliable. This is a backend engineering role at the heart of a critical platform migration, embedded in an empowered product squad. Es esencial asegurarse de que cumple con los requisitos como solicitante para este puesto; por favor, lea atentamente la información a continuación. The challenge The PUDO platform processes thousands of daily parcel events across Spain and Portugal on a large, battle-tested Java + Oracle codebase. The mission: keep that system stable and reliable while progressively migrating it to a modern Python + Postgre SQL stack. This is not a rewrite from scratch. It requires technical judgment, respect for what works, and the ability to plan and execute a migration without disrupting live operations.
Responsibilities




Own and evolve the existing Java + Oracle codebase while driving the migration to Python + Postgre SQL Lead the rewrite of critical carrier integrations on the new stack Introduce and champion automated testing in a codebase with no prior test coverage Help shape the AI-assisted development workflow for maintaining and evolving the legacy system Manage your own deployments and take accountability for what runs in production Collaborate with Engineering and Product Managers across the full product lifecycle Requirements Extensive Python experience with solid ecosystem knowledge Deep Postgre SQL expertise: data modelling, query optimisation, complex datasets Proven track record working with and improving legacy codebases Experience planning and executing technology migrations Background in high-traffic, high-volume backend systems Strong unit and integration testing skills, including introducing tests to untested codebases AI tools as a core, systematic part of your daily workflow Proficiency with Docker , REST APIs , CI/CD pipelines , Git and Git Hub Nice to have Java experience (the current lega

📌 Senior python backend engineer (Valencia do Sil)
🏢 Shakers
📍 Valencia do Sil