Senior Python Engineer, webbyfox consultancy

London, UK
We're looking for a Senior Python Engineer to design, build, and scale the backend systems that power our products. You'll own services end to end — from architecture and API design through to deployment and monitoring — and work closely with product, data, and DevOps teams.
Key responsibilities:
- Design, develop, and maintain scalable, high-performance backend services and APIs in Python
- Lead technical design discussions and make sound architectural decisions
- Write clean, well-tested, maintainable code and champion engineering best practices
- Review code and mentor junior and mid-level engineers
- Optimise application performance, reliability, and security
- Collaborate with cross-functional teams to translate requirements into technical solutions
- Contribute to CI/CD pipelines, observability, and production support
- Stay current with the Python ecosystem and help evolve our tech stack
5+ years of professional software development experience, with strong expertise in Python
Solid experience with at least one major web framework (Django, FastAPI, or Flask)
Strong understanding of RESTful API design; GraphQL experience is a plus
Proficiency with relational databases (PostgreSQL/MySQL) and ORMs; NoSQL experience (Redis, MongoDB) is a plus
Experience with asynchronous programming (asyncio) and task queues (Celery, RQ, or similar)
Hands-on experience with cloud platforms (AWS, GCP, or Azure), Docker, and Kubernetes
Strong testing discipline (pytest, unit/integration testing, TDD)
Familiarity with CI/CD, Git workflows, and monitoring/logging tools
Good knowledge of software design patterns, system design, and security best practices
Excellent communication skills and experience mentoring other engineers
Bachelor's degree in Computer Science or a related field, or equivalent practical experience