Senior Developer - Python

Senior Backend Engineer (Python | AWS) £50,000 per annum Fully Remote – UK Based Permanent, Full-TimeA well-established UK insurance organisation is undertaking a major backend transformation programme, rebuilding a legacy PHP platform into a modern, scalable Python-based architecture hosted in AWS.This is a senior-level engineering role focused on designing and delivering the next generation backend platform that will underpin future digital products.The role is heavily Python-focused. PHP knowledge is beneficial only to support understanding of the legacy system during migration — it is not the primary technology moving forward.The Opportunity You’ll play a key role in the architecture and delivery of a modern cloud-native backend platform, helping transition core functionality from a legacy PHP estate into a scalable, secure Python environment.This is a hands-on engineering position with architectural influence — ideal for someone who enjoys shaping technical direction while remaining close to code.Key Responsibilities Platform Modernisation

• Architect and develop scalable backend services using Python
• Design and implement secure, well-structured RESTful APIs
• Lead the re-engineering of legacy functionality into modern, cloud-native services
• Contribute to long-term backend architecture decisions

Cloud & Infrastructure

• Design and build solutions within AWS environments
• Apply cloud best practices for scalability, resilience and security
• Contribute to CI/CD pipelines and deployment workflows
• Embed monitoring, logging and observability within cloud-hosted systems

Legacy Transition

• Support phased migration away from the existing PHP platform
• Provide technical oversight during system replacement and integration
• Reduce technical debt while maintaining service continuity

Engineering Leadership

• Participate in technical reviews and architectural discussions
• Promote coding standards and clean architecture principles
• Mentor junior developers where appropriate
• Contribute to Agile ceremonies and cross-functional collaboration

Essential Experience

• Strong commercial experience developing backend systems in Python
• Experience designing and implementing RESTful APIs
• Proven experience building and deploying applications within AWS (e.g. Lambda, ECS, API Gateway, CloudWatch, DynamoDB, Cognito or similar services)
• Experience working in cloud-native or distributed architectures
• Strong understanding of security, authentication and secure API design
• Experience with CI/CD pipelines and modern DevOps practices
• Familiarity with Git-based version control workflows

Desirable

• Working knowledge of PHP (legacy context only)
• Experience modernising or replacing legacy systems
• Event-driven or serverless architecture exposure
• Background within financial services or regulated environments

Why Apply?

• Genuine greenfield-style rebuild within an established organisation
• Senior-level influence on platform architecture
• Cloud-first engineering environment
• Fully remote UK role
• Long-term technology investment roadmap

Please note: the successful candidate will be required to complete standard background checks.