Company: Fathom
Location: Bristol (Hybrid working available)
Type: Permanent
Salary: Competitive
Fathom is a leading flood modelling company that provides cutting-edge risk assessment solutions to help organizations understand and manage flood risk across the globe. Our advanced models support insurance companies, governments, and businesses in making informed decisions about flood-related risks.
We are looking for an experienced Senior Software Developer with a strong background in Python and data analysis tools, especially within a scientific setting, to join our team and contribute to our Global Catastrophe Model. This is an excellent opportunity to work with state-of-the-art natural catastrophe risk models running via OasisLMF, working with large-scale geospatial datasets to deliver robust and accurate risk assessments. There will also be opportunities to contribute to other projects, such as our customer facing API which is primarily written in Golang.
The successful candidate will combine strong Python programming skills with an understanding of scientific computing, contributing to the continuous improvement of our modelling capabilities while working as part of a collaborative and innovative team. They will live and breathe software development best practices, delivering well-tested and documented code.
Write clean, maintainable, well-documented and fully tested Python code
Collaborate with team members on code reviews and best practices
Contribute to the development of internal tools and utilities
Participate in testing and validation of model implementations
Maintain and enhance existing natural catastrophe risk models within OasisLMF
Implement model improvements and optimizations to enhance performance and accuracy
Debug and resolve technical issues in model implementations
Ensure model outputs meet quality standards and validation requirements
Process large geospatial datasets including GeoTIFFs and Parquet files
Develop efficient data pipelines for model input preparation
Implement automated data quality checks and validation procedures
Work closely with other members of the catastrophe modelling and technical teams
Participate in technical discussions and planning sessions
Share knowledge and contribute to team learning initiatives
Support other team members when required with programming support and code reviews
University degree in Computer Science, Mathematics, Physics, Engineering, or related quantitative discipline
Expert skills in data manipulation using Python and tools like Pandas and NumPy
Experience with writing and maintaining comprehensive test suites (unit, integration, end-to-end)
Familiarity with CI/CD pipelines (e.g., GitHub Actions)
Experience with containerization (i.e. Docker)
- Experience working with large datasets, particularly:
GeoTIFF files and raster data processing
Parquet files and columnar data formats
Version control systems (Git)
At least 5 years of relevant professional programming experience
Experience working in a collaborative development environment
Demonstrated ability to work with complex scientific or technical datasets
Strong analytical and problem-solving skills
Attention to detail and commitment to code quality
Excellent communication skills for team collaboration
Ability to work independently while contributing to team objectives
Experience with other geospatial libraries (GeoPandas, Rasterio, Shapely, Fiona)
Experience with newer Python tools such as Polars and DuckDB
Cloud computing platforms such as GCP and AWS
Experience with spatial databases (PostGIS)
Experience building and maintaining production APIs
Experience with other languages such as Golang and build tools like Bazel
Experience working with environmental or climate data
Research experience in relevant scientific fields
Competitive salary commensurate with experience
Hybrid working arrangements with flexibility to work remotely
Opportunity to work with cutting-edge flood risk modelling technology
Professional development opportunities and training
Collaborative and innovative working environment
Chance to contribute to meaningful work addressing global flood risk challenges
To apply, please submit:
Current CV highlighting relevant experience
Cover letter explaining your interest in the role and relevant experience
We are committed to equal opportunities and welcome applications from all qualified candidates regardless of background.
- Department
- R&D
- Locations
- Fathom Bristol - UK
- Remote status
- Hybrid
- Employment type
- Full-time
- Location of work
- Hybrid (some office days preferred)
Private medical insurance - Group life assurance
Group income protection
Health cash plan
Dental insurance
Enhanced family policies
Pension contributions matched up to 10%
28 days + bank holidays
Subsidised gym memberships
Access to mental health cover and support
Founded in 2013, Fathom gives risk management professionals the most scientifically robust tools and intelligence to understand the climate's impact on water risk.
By publishing cutting-edge peer-reviewed academic research and applying it to real-world challenges, Fathom powers better decision-making for (re)insurance, civil engineering, corporate risk, financial markets, disaster response and government.
Fathom's dedicated team of scientists harness their passion for innovation and the environment to develop rigorous catastrophe models and comprehensive mapping and geospatial data that make a real-world difference to customers and communities worldwide.
From 2023, Fathom is a part of Swiss Re, one of the world's leading providers of reinsurance, insurance and other forms of insurance-based risk transfer, working to make the world more resilient.
Let’s recruit together and find your next colleague.
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