Senior Developer - Platform Engineer - £395p/d Inside IR35

Senior Developer - Platform Engineering
Contract | Inside IR35 | £395 per day
6 months+ | UK Wide with travel to Leeds once per fortnight

We are recruiting for a Senior Developer/Platform Engineer to join a team supporting a nationally critical healthcare integration and messaging platform. This is a high-impact contract role working on systems that require strong resilience, security, and engineering discipline.

This role would suit someone with a strong Python development background who is equally comfortable working across cloud infrastructure, CI/CD, observability, and secure software delivery.

The opportunity You will help maintain and improve a complex cloud-based platform that supports secure, high-availability data exchange across a large-scale environment. The work will involve improving code quality, supporting deployment standards, strengthening platform engineering practices, and contributing to the reliability and security of live services.

What we're looking for

• Strong experience as a Senior Python Developer
• Good exposure to cloud-native development, ideally AWS
• Experience with Terraform or other Infrastructure as Code tooling
• Experience building and maintaining CI/CD pipelines, ideally with GitHub Actions
• Knowledge of observability and monitoring tooling
• Strong understanding of the Secure Software Development Life Cycle
• Experience developing secure, reliable software in complex environments
• Ability to support incident investigation and problem resolution
• Experience working closely with product or engineering teams as a technical SME
• Understanding of shift-left security practices, including static and dynamic analysis

Additional useful experience

• Promoting good platform and software engineering practices
• Building reusable infrastructure and pipeline components
• Understanding how platform teams can improve delivery across wider engineering functions

Important details

• Inside IR35
• £395 per day
• 6 months initial contract, with potential to extend
• Travel to Leeds once every fortnight
• You must be willing to join an on-call rota once fully up to speed
• Candidates must be SC eligible
• You must have lived in the UK continuously for the last 5 years

This is a strong opportunity to contribute to a platform that plays an important role in supporting essential services, while working in an environment that values secure engineering, reliability, and technical quality.