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.

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 + PostgreSQL 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.

Own and evolve the existing Java + Oracle codebase while driving the migration to

Python + PostgreSQL





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

Extensive

Python

experience with solid ecosystem knowledge

Proven track record working with and improving legacy codebases

Experience planning and executing technology migrations

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📌 Senior Software Engineer (Python) (Madrid)
🏢 Shakers
📍 Madrid