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3 senior full stack java react engineer jobs found

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senior full stack java react engineer
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Outside Spy
Jan 23, 2026
Duration not stated
Backend Engineer (Contract) | Java / Rust (Primary) | React (Secondary) | Ruby or Python (Exposure) | Fully Remote (UK/EU-based) | £550-650/day | Outside IR35 | 12-month contract at Owen Thomas | Pending B Corp™, United Kingdom, £550-£650 per day
£550 - £650 per day
Outside Spy Remote (United Kingdom)
Backend Engineer (Contract) | Java / Rust (Primary) | React (Secondary) | Ruby or Python (Exposure) | Fully Remote (UK/EU-based) | £550-650/day | Outside IR35 | 12-month contract The Opportunity We’re supporting a fast-scaling, globally distributed tech business that is evolving its backend architecture and investing heavily in performance, scalability, and long-term platform direction. They’re looking for a Senior Backend Contractor with strong Java and/or Rust experience to help shape and build the next generation of backend services. Rust is particularly relevant to where the platform is heading, though Java remains important. On the frontend, the team works with React, and there is existing exposure to Ruby and Python, where a working, mid-level understanding is beneficial rather than core. This is a high-impact, long-term contract within an experienced engineering team, ideal for a contractor who enjoys working close to product and infrastructure while...
Outside Spy
Jan 22, 2026
Duration not stated
Backend Engineer (Contract) | Java / Rust (Primary) | React (Secondary) | Ruby or Python (Exposure) | Fully Remote (UK/EU-based) | £550-650/day | Outside IR35 | 12-month contract at Owen Thomas | Pending B Corp™, United Kingdom, £550-£650 per day
£550 - £650 per day
Outside Spy Remote (United Kingdom)
Backend Engineer (Contract) | Java / Rust (Primary) | React (Secondary) | Ruby or Python (Exposure) | Fully Remote (UK/EU-based) | £550-650/day | Outside IR35 | 12-month contract The Opportunity We’re supporting a fast-scaling, globally distributed tech business that is evolving its backend architecture and investing heavily in performance, scalability, and long-term platform direction. They’re looking for a Senior Backend Contractor with strong Java and/or Rust experience to help shape and build the next generation of backend services. Rust is particularly relevant to where the platform is heading, though Java remains important. On the frontend, the team works with React, and there is existing exposure to Ruby and Python, where a working, mid-level understanding is beneficial rather than core. This is a high-impact, long-term contract within an experienced engineering team, ideal for a contractor who enjoys working close to product and infrastructure while...
Outside Spy
Jan 14, 2026
Duration not stated
Engineering Manager at Mindera, London/Hybrid, £Contract Rate
Outside Spy Hybrid (London, UK)
Full job description We are seeking a passionate Software Engineering Manager who will provide technical expertise, ship thoughtfully and operate with excellence. Being creative, curious, and confident, you will be an integral part of our empowered, self-managing, multi-disciplinary engineering teams - designing, building, releasing, and maintaining products. You will play a key role in driving our ambition to create a best-in-class software engineering team, environment, and culture. This is an initial 6 month contract (outside IR35) that requires you to work on client site 3 days a week in London, Paddington. Requirements   Your key accountabilities will include: Team Management: Build, mentor, and manage a high-performing software engineering team. Foster a culture of collaboration, innovation, and continuous improvement within the team. Facilitate communication and collaboration among team members. Ensure budgets, people and...
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