Senior Backend Engineer - Python Outside IR35 Hybrid - Oxford or London | Contract Our client, a UK-based deep tech start-up, is seeking an experienced Senior Backend Engineer (Python & Django or Flask) to own and operate mission-critical backend services powering generative AI products. You'll architect, build, and run scalable APIs and data services end-to … shape the backend systems at the core of cutting-edge AI, with a strong focus on performance, reliability, and security. Key Responsibilities Architect and evolve scalable backend services in Python (FastAPI/Django/Flask). Design and operate RESTful APIs aligned with OpenAPI/Swagger. Implement authentication and authorization (OAuth2/OIDC, permissions, session management). Optimise relational … hardening, monitoring, and compliance readiness. Own backup, disaster recovery, incident response, and runbook creation. Mentor engineers and communicate technical trade-offs to stakeholders. Requirements 5+ years' backend development with Python (Django or Flask). Proven experience designing, scaling, and operating production REST APIs. Deep expertise in relational database design, performance tuning, and migrations (PostgreSQL). Strong knowledge of Docker More ❯
I am currently working with a London-based financial services consultancy who are actively seeking multiple SeniorPython Developers to join one of their prestigious end clients in the Investment Banking space. What you'll need to succeed : Extensive Python Development experience in Financial Services/Investment Banking - Mandatory. Strong experience with relational databases. Extensive AWS experience. More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Hays Specialist Recruitment Limited
I am currently working with a London-based financial services consultancy who are actively seeking multiple SeniorPython Developers to join one of their prestigious end clients in the Investment Banking space. What you'll need to succeed : Extensive Python Development experience in Financial Services/Investment Banking - Mandatory. Strong experience with relational databases. Extensive AWS experience. More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Ashdown Group
A well-established business is looking for an accomplished Software Engineer with expert Python skills to join its organisation. Please note, this role is Outside IR35. The company embraces hybrid and flexible working so you will be able to work fully remotely, with occasional visits (perhaps once per month) to the office in London. Web, software, and AI-enabled … technology are fundamental to the success of the business so you must have proven experience of developing great software in Python and an interest in adopting cutting-edge technology. In order to be suitable for this Lead Software Engineer role you must be an accomplished developer with a passion for technology and desire to mentor a team. You … will hold proven experience delivering SaaS projects in Python and will be keenly interested in AI and ML. Experience with AWS and data engineering would be advantageous to your application. In this role of significant responsibility, you will be both a Lead Developer and guide 2 in-house developers and an offshore team. You will act as a More ❯
