7 staff full stack engineer jobs found

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

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

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

WE ARE: At Adaptive, we are a technology provider firm that partners with capital, commodity, and digital market participants to build custom front-office technology, messaging systems, and trading infrastructure. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world 's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach, with offices in London, New York, Barcelona, Montreal, and Manila, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication. We 're looking for a Senior Java / Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron....

WE ARE: At Adaptive, we are a technology provider firm that partners with capital, commodity, and digital market participants to build custom front-office technology, messaging systems, and trading infrastructure. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintechs and capital market service providers. With a global reach, with offices in London, New York, Barcelona, Montreal, and Manila, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions, and we value technical pragmatism, collaboration, and clear communication. We're looking for a Senior Java / Systems Engineer with significant experience in Platform Exchange Systems to design, deliver, and optimise production-ready, high-performance, low-latency technology using Aeron....

About the job Contract: Outside IR35 Commitment: 2-3 days a week Additional days: £280 per day, subject to prior written approval Location: UK-based, remote Start date: 20 November 2026 Term: Initial MVP contract with the possibility of extension   ABOUT VAULTIER Vaultier is building a private collection-management platform for wealthy collectors and the people authorised to manage their collections. The product will hold sensitive information about valuable pieces, including ownership, value, location, documents, actions and access permissions.   THE ROLE Vaultier is looking for an independent QA engineer to test its responsive web MVP.   You will review completed features against approved requirements, identify defects and risks, and provide clear evidence of whether each release is ready. You will work independently from the full-stack engineer while collaborating with Product, UX and...

Location: UK-based, remote Commitment: Four days per week Contract: Outside IR35 Fee: £6,500 per month Start date: 20 November 2026 Term: Initial contract with the possibility of extension   ABOUT VAULTIER Vaultier is building a private collection-management platform for wealthy collectors and the personnel authorised to manage their high-value collections. The product combines secure digital records, collection administration, controlled access, approvals and coordination with trusted professionals.   Vaultier is preparing its first MVP and requires an experienced full-stack engineer to take technical ownership of the build.   THE ROLE The engineer will work from approved product requirements and designs to build, test and release the Vaultier MVP.   Some initial screens may be produced using AI-assisted development tools. The engineer will be responsible for reviewing and converting this work...