Staff Full Stack Engineer (Contract) | Rust & Java (Primary) | React & Python (Secondary) | Fully Remote (UK-based) | £500-600+/day | Outside IR35 | 12-Month Contract

Staff Full Stack Engineer (Contract) | Rust & Java (Primary) | React & Python (Secondary) | Fully Remote (UK-based) | £500-600+/day | Outside IR35 | 12-Month ContractWe’re partnering with a fast-scaling, globally distributed tech business that’s investing heavily in the evolution of its platform – modernising backend services, improving frontend experiences, and setting long-term architectural direction.They’re looking for a Staff Full Stack Engineer (Contract) with strong commercial experience in Rust and Java, alongside hands-on experience building production-grade applications with React and Python.This is a high-impact, long-term contract within an experienced, product-focused engineering team, where you'll play a key role in developing scalable backend systems, delivering modern frontend experiences, and influencing architectural decisions.It’s well suited to an experienced contractor who enjoys owning complex technical challenges, working across the full stack, and building performant, reliable software – supported by modern, AI-assisted development practices.What You’ll Be Doing as a Staff Full Stack Engineer (Contract) | Rust & Java | React & PythonDesigning, developing, and optimising scalable backend services using Rust and JavaBuilding high-performance, reliable systems with a focus on scalability, maintainability, and clean architectureDeveloping and maintaining modern, customer-facing applications using ReactContributing to backend services, APIs, and integrations using PythonTaking ownership of complex features end to end, from architectural design through to production deliveryWorking closely with product, design, and platform teams to deliver impactful customer-facing functionalityInfluencing technical direction, engineering standards, and architectural decisions across the platformApplying best practices around performance, reliability, testing, and securityLeveraging AI-assisted development tools for coding, refactoring, testing, and debuggingCore Skills & Experience – Staff Full Stack Engineer (Contract) | Rust & Java | React & PythonEssentialExtensive commercial experience as a Senior or Staff-level Full Stack / Backend Engineer in production environmentsStrong backend engineering experience with Rust and/or Java, ideally with commercial exposure to bothSolid understanding of concurrent programming, distributed systems, and performance-focused backend developmentCommercial experience developing modern frontend applications using ReactHands-on experience with Python, including backend services, APIs, or application developmentStrong knowledge of REST APIs, microservices, scalable architecture, and cloud-native developmentExperience designing, building, and maintaining production-grade systemsComfortable using AI-assisted development tools as part of your daily engineering workflowContractor mindset: able to onboard quickly, communicate clearly, take ownership, and deliver value fastStrongly PreferredStrong commercial experience across both Rust and JavaExperience working across the full stack with React and PythonPrevious experience making architectural decisions or providing technical leadership at Staff Engineer levelExperience building performance-sensitive, highly scalable, or distributed backend systemsBackground working within fast-growing, product-led technology businessesComfortable working across multiple languages, frameworks, and engineering disciplinesNice to HaveExperience with Python frameworks such as Django or FastAPIExperience with modern React ecosystems, including TypeScriptExposure to systems-level programming, asynchronous processing, or high-throughput servicesExperience improving developer experience, internal tooling, or engineering productivityExperience mentoring engineers or contributing to wider engineering standardsContract Details – Staff Full Stack Engineer | Rust & Java (Primary) | React & Python (Secondary) | Fully Remote (EU-based) | £500–600/day | Outside IR35 | 12-Month ContractContract Type: LTD Company (UK) / B2BLocation: Fully remote (EU-based required for legal and timezone reasons)Rate: £500–600 per day (Outside IR35)Duration: 12 months, with strong extension potentialStart Date: ASAPIf you’re an experienced Staff / Senior Full Stack Engineer with strong Rust and Java expertise, alongside commercial React and Python experience, and enjoy building scalable systems while owning features end to end, this is an excellent long-term contract opportunity.Apply here, and we’ll be in touch if it looks like a good fit. :)