Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length - #1667627

Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Opportunity:

We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across Java and Python, strong exposure to Rust, and ideally a touch of Ruby. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment.

What You'll Be Doing as a Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :

• Designing and building robust backend services across Java, Python, and Rust-based systems


• Collaborating with product and platform teams to scale critical infrastructure


• Contributing to performance optimisation, secure coding, and clean architecture decisions


• Bringing in best practices across multiple programming paradigms and languages


• Ideally, supporting legacy Ruby codebases or integrations where needed

Core Skills for the Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :

• 
  Senior-level backend experience with both Java and Python in production systems


• Proven work with Rust (production experience strongly preferred)


• Familiarity with Ruby or willingness to support legacy pieces if required


• Strong grasp of APIs, cloud-native systems, and scalable architecture


• Freelance mindset: able to hit the ground running, communicate clearly, and add value fast

Details for the Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35

• 
  Contract: LTD company (UK) / B2B


• 
  Location: Remote (must be EU-based for legal/timezone reasons)


• 
  Duration: Long-term engagement potential


• 
  Start: ASAP

If interested in this Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35, please apply here and we will contact you if it's a good match! :)