Python Developer

Salary: £49,000 - 89,000 per year

Requirements:

• 5-6+ years of recent, hands-on Python development, including ownership of production services, reusable libraries and automation - not only scripts, notebooks or data analysis.
• Practical FastAPI and Pydantic experience covering API creation, schema design, complex validation, serialization, async processing, error handling and testing.
• Strong conceptual, logical, physical and metadata modelling, including canonical models, data contracts, source-to-target mapping, schema versioning, lineage and data quality.
• Experience processing large JSON, YAML and SQL datasets, with practical knowledge of batching, retries, idempotency, caching and performance optimisation.
• Strong production engineering practices: PyTest, Git, code reviews, CI/CD, deployment, monitoring and production support.
• A hands-on go-getter who can contribute from day one, work independently and deliver production-ready solutions quickly. Financial-services or regulated-domain experience is preferred.

Responsibilities:

• Work closely with data governance, architecture, technology, risk, compliance and business teams.
• Translate complex regulatory, metadata and technology requirements into robust data models, reusable design patterns and platform-ready solutions.

Technologies:

• AI
• API
• CI/CD
• FastAPI
• Git
• Support
• JSON
• Python
• SQL
• pytest

More:

We are looking for a hands-on technologist with strong experience in large-scale data and asset modelling using Python, with particular expertise in Pydantic-based data modelling, schema definition and validation. Experience with AI-assisted development and agent orchestration tools is highly desirable, particularly where these technologies are used to accelerate high-quality software delivery.

last updated 38 week of 2026