Senior Python Developer, Oxidian

The Role

We’re looking for a fully remote (EU only) senior Python Developer to build a modular, extensible Python library that automates common data transformation tasks and streamlines data preparation workflows, to reduce the time and effort data scientists spend on preprocessing activities for AI/ML applications within the Earth Observation space.

You’ll work on high-performance scientific software and complex data processing systems used to transform large scale satellite and meteorological datasets into high quality outputs which can be used is inputs for AI/ML models.

We move quickly, trust each other to deliver, and give you space to own your work from day one.

In this role, you will:

• Build Python-based workflows to access, transform, and analyse large-scale geospatial and meteorological datasets for AI/ML applications
• Work directly with cloud-native formats like Zarr and COG, and parallel computing tools like Dask
• Develop workflows that integrate multiple satellite and model datasets, handling varying spatial and temporal resolutions and performing spatial & temporal harmonisation
• Implement automated CI/CD pipelines using GitLab to manage quality checks, tests, and deployment
• Carry out performance benchmarking, scalability testing, and code optimisation to ensure efficient processing of multi-terabyte datasets
• Write clear documentation with ReadTheDocs and create user-facing usage examples as Jupyter Notebooks
• Collaborate closely with other developers and domain experts to make sure outputs are scientifically robust
• Contribute to internal LLM tooling and automation to improve efficiency

Essential:

• Strong Python development skills, particularly for data processing and scientific analysis
• Experience with cloud-native data formats (Zarr, COG) and parallel processing (Dask)
• Confidence working with large earth observation datasets from satellites and models
• Familiarity with containerisation (Docker) and deployment in Linux environments
• Fluency with Git, GitLab, and GitLab Pipelines.
• A sense of urgency: you’re a responsive communicator who works quickly and to the highest standards
• The ability to thrive in ambiguity, tackling problems that might not be well defined and that may not have obvious solutions
• A burning desire to improve the current state of government software contracting.

Nice to have:

• Experience building software for government and public sector organisations
• An understanding of how to get the most out of LLM powered coding tools like Cursor and Claude Code
• Experience designing internal tools that automate tasks or integrate LLMs to improve developer or analyst workflows