Remote Senior Backend Python Developer (Castro Urdiales)

Overview
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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 is to keep that system stable and reliable while progressively migrating it to a modern Python + PostgreSQL stack. 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 + 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.
Requirements
Extensive Python experience with solid ecosystem knowledge.
Deep PostgreSQL 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 GitHub.
Nice to have
Java experience (the current legacy stack).
Familiarity with Oracle databases.
Experience with Google Cloud Platform, GitHub Actions, or GCP Cloud Build.
Data‑driven mindset;
experience in Product‑led or multidisciplinary teams.
Why this project?
A genuinely complex engineering challenge: a high‑stakes migration on a live production system that carriers and consumers depend on daily. You will lead one of the most critical pieces of that migration from day one, with full ownership and AI tooling provided. It is long‑term, fully remote, within a company growing fast across five European markets.
Benefits
Long‑term, fully remote.
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Hay opciones de teletrabajo/trabajo desde casa disponibles para este puesto.