59 contract software engineer jobs found

Senior Software Engineer, App Experience, Contract, Outside IR35, Remote, My client, a global hospitality brand, is on the search for a Senior Software Engineer to join a cross-functional App Experience team, helping deliver a best-in class mobile experience and supporting the rollout of a new feature-flag platform. This role will be predominantly Back End work using Node, TypeScript and will involve working closely with API's, updating/refactoring. What you'll do Build and enhance Back End services powering a widely used customer mobile app Ensure applications are performant, scalable, and secure Participate in agile delivery: code reviews, testing, deployments Integrate enterprise systems into custom-built architecture Tech you'll work with Node.js, JavaScript, TypeScript, React Automated testing: Jest, React Testing Library, MSW, Maestro CI/CD & cloud tools such as Bitrise, GitHub Actions, Cloud Run, Cloud Build, Terraform React Native and observability...

Role: Senior Software Engineer - Backend Contract Rate: C.£550 Outside IR35 Per day Location: Leeds - Hybrid (2x days on site) Length: 3-6 months About Us: We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers click apply for full job details

Role: Senior Software Engineer - Backend Contract Rate: C.£550 Outside IR35 Per day Location: Leeds - Hybrid (2x days on site) Length: 3-6 months About Us: We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. Role Overview: As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. Key Responsibilities: Design, implement, and maintain backend services, APIs, and databases. Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. Ensure systems are scalable, reliable, and maintainable. Write clean, testable, and efficient code following best practices. Requirements: Strong programming...

Role: Senior Software Engineer - Backend Contract Rate: C.£550 Outside IR35 Per day Location: Leeds - Hybrid (2x days on site) Length: 3-6 months About Us: We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. Role Overview: As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining server-side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. Key Responsibilities: Design, implement, and maintain backend services, APIs, and databases. Collaborate with product managers, frontend engineers, and other stakeholders to deliver features end-to-end. Ensure systems are scalable, reliable, and maintainable. Write clean, testable, and efficient code following best practices. Requirements: Strong programming skills...

Role: Senior Software Engineer - Backend Contract Rate: C.£550 Outside IR35 Per day Location: Leeds - Hybrid (2x days on site) Length: 3-6 months About Us: We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers. Role Overview: As a Senior Software Engineer, you will be responsible for designing, developing, and maintaining Server Side applications and services. You'll work closely with cross-functional teams to ensure our systems are performant, secure, and deliver a great user experience. Key Responsibilities: Design, implement, and maintain Back End services, APIs, and databases. Collaborate with product managers, Front End engineers, and other stakeholders to deliver features end-to-end. Ensure systems are scalable, reliable, and maintainable. Write clean, testable, and efficient code following best practices. Requirements: Strong programming...

Role: Developer Tech Stack: .NET, C#, AWS, MongoDB IR35 Status: Outside IR35 Day Rate: £400.00 Location: Remote Contract Length: 3 months (highly likely to extend to 6 Months+) Start Date: Immediate We are seeking a Developer to join the agile delivery team supporting the development of a major government digital platform click apply for full job details

Location: Worcester (fully onsite) Duration: 6 month initial contract Rate: £82ph LTD (Outside IR35) Due to the nature of the role, candidates must hold active DV clearance. Role details: Our client, a leading defence and security company, are looking for DV cleared Software/DevOps Engineers to join their team on a contract basis click apply for full job details

Contract Senior Full Stack Software Engineer : Up to £500 Outside IR35 : Monthly Hybrid London : 6 months (rolling) A digital consulting partner of ours are looking for a Contract Senior Full Stack Software Engineer to design, build, and maintain scalable, high-performance software systems for their end customer. As a Contract Senior Full Stack Software Engineer you will lead technical decision-making by reviewing designs, mentoring engineers, and driving best practices in code quality, architecture, and tooling. Key Skills: Angular, Java, Node.js MuleSoft Cloud experience (AWS, Azure, GCP) Contract Details: Up to £500 per day, Outside IR35 6 months (rolling) Monthly Hybrid London This is an exciting opportunity for an experienced developer to apply their expertise in a fast-moving environment, shaping technologies that directly impact real time projects. Please note: Due to the high volume of applications, unfortunately, we may not be able...

Role: Senior Software Engineer - Backend Contract Rate: C.£550 Outside IR35 Per day Location: Leeds - Hybrid (2x days on site) Length: 3-6 months About Us: We are working with a growing, forward-thinking technology company dedicated to building scalable, reliable, and high-performing solutions for our customers click apply for full job details

Senior Software Developer - 9 Month Contract (Outside IR35) I'm looking for an experienced Senior Developer for a 9 month initial contract for a client of mine in London to start in January 2026. Key Skills for the Senior .NET Developer contract: Experience with modern versions of .NET - Such as .NET 8 and above Excellent knowledge of CI/CD Pipelines / DevOps experience Microservices / Event Driven Architecture Kafka / RabbitMQ The role will involve either developing a greenfield application or upgrading existing legacy code into modern .NET 10. (TBC) Providing you fit all of the above skills criteria and can operate on a hybrid contract in London, please apply below and I will reach out to discuss further.

Senior Rust Engineer (High-Frequency Trading) Contract Length: 6 months (with potential extension) Location: London (4 days per week onsite) Day Rate: Up to £800 (Outside IR35) We’re looking for an experienced Senior Rust Engineer to take ownership of a greenfield high-frequency trading (HFT) platform, leading the development of the execution layer and market-making system. You’ll step into a technical leadership role, driving architecture, improving performance, and ensuring the system is built to world-class standards. If you’ve built ultra-low-latency trading systems before and want to take full responsibility for a new Rust-based platform, this is an opportunity to shape a high-impact project from the ground up. Key Experience Needed Extensive experience designing and developing high-frequency trading systems Strong experience working on Rust with a track record of building low-latency, high-throughput production systems Proven ability to lead the...

Software Engineer - Verification Winfrith, near Dorchester (4 days on site per week) – 6 month duration – Outside IR35 We are looking for a Software Test Engineer to work for our defence client in Winfrith, near Dorchester. This can operate on an Outside IR35 basis and the main purpose is: delivery of Software Test activities (including planning, management, and testing) within the software development lifecycle. Knowledge and experience: Proven ability to support or lead software test activities within defence or other safety critical field Knowledge and understanding of Software Testing within Software development lifecycle Understanding of Open Systems Architectures and Principles Experience of Software Engineering Lifecycle processes and tools Ability to efficiently plan, manage and deliver robust Software test solutions including Manual and Regression Testing Experience in the testing of high integrity software to recognised standards –IEC61508, or equivalent...

Software Engineer/API/Microservices/Outside IR35 Brilliant opportunity available for a Senior Software Engineer, with experience of coding APIs/web services has become available with a business based in Oxfordshire. The role can be largely remote with up to once a week office work in Didcot and ideally starting mid December - early Jan click apply for full job details

Role: Staff Software Engineer Sector: Life Sciences Location: London Days Onsite: 3 per week Day Rate: £600 to £800 Outside IR35 Duration: 4 Months then to extend or go Permanent iO Associates have partnered with Life Science Manufacturing company on their search for a Staff Software Engineer who has a strong background in integrating Medical Devices click apply for full job details

Software Engineer / API / Microservices / Outside IR35 Brilliant opportunity available for a Senior Software Engineer, with experience of coding APIs/web services has become available with a business based in Oxfordshire. The role can be largely remote with up to once a week office work in Didcot and ideally starting mid December - early Jan. We need experience of - - Python or Rust are the preferred languages - Coding APIs/web services - Microservices - Ideally experience with Devops/Kubernetes and Azure Interviews can be scheduled right away with a view of starting mid December - early Jan Apply via the link below or email me with your CV (joss. Escott @ Roberthalf. co. uk) Software Engineer / API / Microservices / Outside IR35 Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and...

Senior Software Engineer, App Experience, Contract, Outside IR35, Remote, My client, a global hospitality brand, is on the search for a Senior Software Engineer to join a cross-functional App Experience team, helping deliver a best-in-class mobile experience and supporting the rollout of a new feature-flag platform. This role will be predominantly backend work using Node, TypeScript and will involve working closely with API’s, updating / refactoring. What you’ll do Build and enhance backend services powering a widely used customer mobile app Ensure applications are performant, scalable, and secure Participate in agile delivery: code reviews, testing, deployments Integrate enterprise systems into custom-built architecture Tech you’ll work with Node.js, JavaScript, TypeScript, React Automated testing: Jest, React Testing Library, MSW, Maestro CI/CD & cloud tools such as Bitrise, GitHub Actions, Cloud Run, Cloud Build, Terraform React Native and...

Data Test Engineer l Data platform l data warehouse testing l Test suite l Dashboards l Test strategy l Azure Devops l Databricks l ETL/ELT l £325 PD l Outside IR35 l 3 months l London - Remote Method Resourcing are partnering with an organisation in need of a data test Engineer to support the testing of a new data platform solution. This role will need someone with deep knowledge around data testing, automation and Quality governance across cloud-based data solutions. Core tech stack: Data warehouse testing Databricks Auto testing ETL knowledge Devops Test suite Dashboarding This testing position is very much more on the data side than software side. Contract: Outside IR35 3 month contract (This role is initially 2 days a week) remote however, has to be based in the UK £325 per day Immediate start If you're interested in the role and would love more information, please send me your CV ASAP at Data Test Engineer l Data platform l data warehouse...

Data Test Engineer l Data platform l data warehouse testing l Test suite l Dashboards l Test strategy l Azure Devops l Databricks l ETL/ELT l £325 PD l Outside IR35 l 3 months l London - Remote Method Resourcing are partnering with an organisation in need of a data test Engineer to support the testing of a new data platform solution. This role will need someone with deep knowledge around data testing, automation and Quality governance across cloud-based data solutions. Core tech stack: Data warehouse testing Databricks Auto testing ETL knowledge Devops Test suite Dashboarding This testing position is very much more on the data side than software side. Contract: Outside IR35 3 month contract (This role is initially 2 days a week) remote however, has to be based in the UK £325 per day Immediate start If you're interested in the role and would love more information, please send me your CV ASAP at (see below) Data Test Engineer l Data platform l data...

Data Test Engineer l Data platform l data warehouse testing l Test suite l Dashboards l Test strategy l Azure Devops l Databricks l ETL/ELT l £325 PD l Outside IR35 l 3 months l London - Remote Method Resourcing are partnering with an organisation in need of a data test Engineer to support the testing of a new data platform solution. This role will need someone with deep knowledge around data testing, automation and Quality governance across cloud-based data solutions. Core tech stack: Data warehouse testing Databricks Auto testing ETL knowledge Devops Test suite Dashboarding This testing position is very much more on the data side than software side. Contract: Outside IR35 3 month contract (This role is initially 2 days a week) remote however, has to be based in the UK £325 per day Immediate start If you 're interested in the role and would love more information, please send me your CV ASAP at...

Site Reliability Engineer Job Opportunity: Freelance Site Reliability Engineer (Outside IR35) £500-550 | Remote (UK-Based) | Occasional travel to Farnborough or Hammersmith Contract until 2026 We 're hiring two hands-on Site Reliability Engineers (SREs) to join a fast-moving platform team on a long-term contract. This role is ideal for engineers with strong coding skills who are comfortable resolving live production issues - not just escalating them, but diving into the code and fixing them directly. This is a UK-based, fully remote position, with occasional in-person meetings in Farnborough or Hammersmith . The contract is outside IR35 and runs through 2026. Key Requirements • Strong software engineering experience, ideally in Java (Spring Boot) and Python • Proven background in SRE practices, including platform reliability, monitoring, and incident response • Ability to debug and resolve issues directly...