Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length

Senior Backend Engineer Contractor (Java / Ruby focused) | 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 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 / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 : Designing and building robust backend services across Java, Python, and Rust-based systemsCollaborating with product and platform teams to scale critical infrastructureContributing to performance optimisation, secure coding, and clean architecture decisionsBringing in best practices across multiple programming paradigms and languagesIdeally, supporting legacy Ruby codebases or integrations where neededCore Skills for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :Senior-level backend experience with both Java and Python in production systemsProven work with Rust (production experience strongly preferred)Familiarity with Ruby or willingness to support legacy pieces if requiredStrong grasp of APIs, cloud-native systems, and scalable architectureFreelance mindset: able to hit the ground running, communicate clearly, and add value fastDetails for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 Contract: LTD company (UK) / B2BLocation: Remote (must be EU-based for legal/timezone reasons)Duration: Long-term engagement potentialStart: ASAPIf interested in this Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35, please apply here and we will contact you if it\’s a good match! 🙂