Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd

Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract LengthOpportunity:We\’re supporting a fast-moving client at huge global scale, that is in need of aSenior Backend Contractorwith deep experience acrossJava 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 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 neededCore Skills for the Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 :Senior-level backend experiencewith both Java and Python in production systems Proven work withRust(production experience strongly preferred) Familiarity withRubyor 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 fastDetails for theSenior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35Contract : LTD company (UK) / B2B Location : Remote (must be EU-based for legal/timezone reasons) Duration : Long-term engagement potential Start : 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! 🙂