Senior Backend Engineer Contractor (Java, Python, Rust + Ruby nice-to-have) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length
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:
- 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:
- 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:
- Contract: LTD company (UK) / B2B
- Location: Remote (must be EU-based for legal/timezone reasons)
- Start: ASAP
If interested, please apply here and we will contact you if it's a good match! :)
Seniority level
Mid-Senior level
Employment type
Contract
Job function
Engineering and Information Technology
Industries
Technology, Information and Media
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