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 a...