Senior Backend Developer - Ruby/Elixir
Location: London - Remote
Outside IR35
Immediate starter.
We're supporting a technology business undertaking a major modernization programme and are looking for a Senior Backend Developer to drive a large-scale refactoring initiative across a complex, multi-service platform.
This is a hands-on role for someone who enjoys untangling legacy code, improving architecture, and leaving systems in a measurably better state than they found them. You'll combine deep engineering capability with pragmatic technical leadership to deliver safer, faster, and more scalable services.
What you'll be doing:
* Lead end-to-end refactoring across multiple backend technology stacks
* Redesign and modernise the messaging and event architecture
* Improve database performance, reliability, and schema design
* Reduce technical debt while keeping business disruption to a minimum
* Define and embed engineering standards and maintainability practices
* Support and mentor engineers working alongside you
...