Senior Python Engineer

About the role

We are looking for a Senior Python Engineer to join a cross-functional product team and shape the digital experiences of tomorrow. You will be responsible for the backend and data-processing layer of Pathfinder, a complex, data-intensive web application for strategic roadmapping and portfolio planning. The position is focused on backend engineering, data processing, APIs, performance and scalability.

What you will do

• Work with AWS infrastructure and cloud services

• Apply caching, queuing, batch processing and other optimisation techniques where they are needed

• Write clean, testable, maintainable code backed by solid automated test coverage

• Investigate and resolve complex technical and performance issues

• Collaborate closely with the Solution Architect, AQA, Manual QA and Front-end engineers

• Design solutions with performance, scalability, reliability and maintainability in mind

• Build what the product actually needs and avoid over-engineering

• Weigh cost, performance and development effort when making technical decisions

• Question unnecessary complexity and look for pragmatic solutions

• Thrive in a lean, fast-paced, start-up-like environment where requirements keep evolving

What we are looking for

• 5+ years of strong commercial experience with Python and modern Python frameworks

• Ability to design and develop robust, scalable backend services and APIs

• Experience building efficient solutions for large-scale data processing, transformation and aggregation

• Strong knowledge of SQL and relational databases, including query optimisation and data modelling

• Experience with REST APIs, service integration and asynchronous/background processing

• Solid understanding of software architecture and engineering principles, beyond framework-level development

• Ability to analyse technical problems and choose the most suitable solution

• Confidence working with complex data models and business logic

• Strong focus on performance and efficiency, especially when processing large datasets

• Understanding of the trade-offs between simplicity, scalability and maintainability

Nice to have

• Strong engineering fundamentals, a pragmatic approach and a dislike of unnecessary complexity

• Readiness to take ownership of technically challenging backend and data-processing problems and deliver robust, efficient solutions that can grow with the product