Back End Developer

I've partnered with an established, highly profitable SaaS business that is going through an exciting period of growth. Their platform is used by leading financial and professional-services organisations to make better decisions from complex data.

They're looking for a Senior Backend Engineer to join their engineering team and play a key role in scaling their platform and developing a new generation of data and AI-powered capabilities.

The Role

You'll take ownership across the Python backend, working closely with product, data and frontend engineers to build reliable, scalable systems.

You'll be involved in:

• Designing and developing high-quality APIs and backend services
• Working with large-scale datasets and optimising complex SQL queries
• Building infrastructure to support new AI-powered functionality
• Improving the scalability, reliability and performance of the platform
• Working closely with data engineering and frontend teams to deliver end-to-end features
• Helping shape technical decisions as the engineering team continues to grow

Who You Are

• Strong commercial experience with Python
• Experience building production APIs using FastAPI or another modern async framework
• Strong SQL and relational database knowledge
• Comfortable working with large datasets and performance optimisation
• A track record of taking ownership of projects from idea through to production
• Someone who enjoys working autonomously and solving ambiguous problems
• Comfortable working in a fast-moving product environment

Nice to have: experience with analytical databases such as ClickHouse, Redshift or Snowflake, data-intensive products, TypeScript, cloud infrastructure or mentoring junior engineers.

The Environment

This is a high-autonomy engineering environment where you'll have genuine influence over how things are built.

They're looking for engineers who enjoy solving real problems pragmatically rather than over-engineering solutions. You'll have the opportunity to work across the stack, influence architecture and help shape the next stage of the company's technical growth.

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