Senior Backend Engineer Contractor (Java / Ruby focused) | Fully Remote / EU-Based | Rate £550-[...]

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 6 days ago Be among the first 25 applicants Direct message the job poster from Owen Thomas | Pending B Corp Co-Founder @ Owen Thomas – Pending B Corp | Scaling teams for all things Software, Data, Cloud & AI/ML Senior Backend Engineer Contractor (Java / Ruby focused) | 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 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 needed Core 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 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 / Ruby focused) | Fully Remote / EU-Based | Rate £550-650pd | Outside IR35 Contract : LTD company (UK) / B2B Location : Remote (must be EU-based for legal/timezone reasons) Start : ASAP If 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! 🙂 Seniority level Seniority level Mid-Senior level Employment type Employment type Contract Job function Job function Engineering and Information Technology Industries Technology, Information and Media Referrals increase your chances of interviewing at Owen Thomas | Pending B Corp by 2x Get notified about new Back End Developer jobs in United Kingdom . Greater London, England, United Kingdom 1 month ago London, England, United Kingdom 1 week ago Python Backend Junior Software Engineer – Remote 4 days a week (Europe) London, England, United Kingdom $30,000.00-$40,000.00 3 weeks ago London, England, United Kingdom 6 months ago London, England, United Kingdom 1 month ago Python Backend Junior Software Engineer – Remote 4 days a week (Europe) Edinburgh, Scotland, United Kingdom $30,000.00-$40,000.00 3 weeks ago Associate Backend Engineer (Remote within the UK) London, England, United Kingdom 2 months ago London, England, United Kingdom 2 hours ago Python Backend Junior Software Engineer – Remote 4 days a week (Europe) Manchester, England, United Kingdom $30,000.00-$40,000.00 3 weeks ago Software Engineer (Backend or Full-Stack) London, England, United Kingdom 3 weeks ago Hounslow, England, United Kingdom 2 weeks ago Greater London, England, United Kingdom 3 months ago Tottenham, England, United Kingdom 1 month ago United Kingdom $75,000.00-$100,000.00 3 weeks ago Lydbury North, England, United Kingdom 1 week ago London, England, United Kingdom 3 weeks ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr