19 of 19 Contract Senior Software Engineer Jobs in the UK

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence/cyber security company £500 - £750 per day (inside and outside IR35 roles available) London … based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R&D companies, Multi-National Consultancies to SME's and product based companies. Due to the nature of … the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire More ❯

Senior Software Engineer - Remote (UK) Location: Remote (UK-based)/very occasional travel to London A fast-growing global technology company specialising in data-driven B2B solutions is seeking a contract Senior Software Engineer to join its high-performing engineering team. This is a remote UK based role, with very occasional travel to London. … The company builds scalable platforms that support enterprise-level marketing and sales intelligence, serving thousands of users across multiple industries. The Role This is a hands-on senior engineering role focused on designing and developing backend services and APIs using modern technologies such as Java 17+, Golang, and AWS. You'll be part of a collaborative team working on More ❯

Job Title: Software Engineer/Senior Software Engineers – Linux, C++, Networking, Python (All Levels) Location: Bristol - Hybrid Type: Full-time, 12 month FTC Salary: Competitive, commensurate with experience Whether you have 18 months or 5+ years of relevant experience, if you’re passionate about building high-performance systems in a dynamic environment, we’d love to … hear from you. About the Role We are partnering with a well-established high-tech scale-up to find experienced Software Engineers to join their dynamic and innovative team. This is a hands-on engineering role where you’ll be instrumental in the design, development, and maintenance of advanced systems and associated platforms. You’ll work across planned software feature development, real-time troubleshooting, and complex systems integration. This is a great opportunity to deepen your skills in high-performance software and modern infrastructure while working in a collaborative, fast-paced environment. Key Responsibilities Develop, enhance, and maintain robust software solutions for mission-critical systems. Design and implement multithreaded C++ applications for data processing. Script tools More ❯

Java and Golang/Scala/Spark Gradle/Maven AWS/Terraform & APIs Senior Software Engineer - Remote (UK) Location: Remote (UK-based)/very occasional travel to London A fast-growing global technology company specialising in data-driven B2B solutions is seeking a contract Senior Software Engineer to join its high-performing engineering … to London. The company builds scalable platforms that support enterprise-level marketing and sales intelligence, serving thousands of users across multiple industries. The Role This is a hands-on senior engineering role focused on designing and developing Back End services and APIs using modern technologies such as Java 17+, Golang, and AWS. you'll be part of a collaborative More ❯

Job title: Senior Software Engineer Location: Full Remote (Very occasional travel to offices in Cheshire) Type: Contract/Outside IR35/6 months initial duration + possible renewals About the Role We're looking for Senior Software Engineers to join our client's dynamic Engineering team and play a key role in building high-quality … scalable software solutions. As a senior member of the team, you'll take ownership of full-stack development, contribute to software architecture, drive engineering best practices, and mentor junior team members. You'll work closely with Product Owners, Architects, and DevOps to ensure delivery excellence across a diverse range of projects. What You'll Be Doing Software … SQL for efficient data management Apply design patterns like OOP, SOLID, and Clean Code to write scalable code Engineering & Architecture Deliver high- and low-level estimations for projects Ensure software quality through unit and integration testing Perform code reviews and participate in pair programming Architect scalable, secure systems, including OAuth and SSO integrations Cloud & DevOps Deploy and manage apps More ❯

Senior Oracle APEX Software Engineer (SC Cleared) Bristol, Leicester, or Plymouth (2 days per week onsite) 425 - 525 per day (Inside IR35) 6-month contract Must hold live & transferrable SC clearance ( used within the last 12 months) The Opportunity We're seeking an experienced Senior Oracle APEX Software Engineer to play a key role … to national security and the safety of those at sea. The Role As part of the Digital Solutions Team, you'll be responsible for designing, developing, and maintaining complex software applications that underpin through-life engineering support for the Royal Navy's submarine fleet. You'll take a lead role in requirement analysis, solution design, and efficient software More ❯

Senior Oracle APEX Software Engineer (SC Cleared) Bristol, Leicester, or Plymouth (2 days per week onsite) £425 - £525 per day (Inside IR35) 6-month contract Must hold live & transferrable SC clearance ( used within the last 12 months) The Opportunity We're seeking an experienced Senior Oracle APEX Software Engineer to play a key role … to national security and the safety of those at sea. The Role As part of the Digital Solutions Team, you'll be responsible for designing, developing, and maintaining complex software applications that underpin through-life engineering support for the Royal Navy's submarine fleet. You'll take a lead role in requirement analysis, solution design, and efficient software More ❯

Role: Contract Senior Backend Software Engineer - Node.js 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 Backend Software Engineer (Node.js), 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 … with relational and/or NoSQL databases. Familiarity with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes). Experience with Front-end (React.js) would be beneficial. Knowledge of software design principles, testing methodologies, and version control (Git). We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability More ❯

Role: Contract Senior Software Engineer - Vue.js Rate: Negotiable Outside IR35 per day Location: Leeds - Hybrid (c. 2 days on site) Length: Initial 3 Months, likely to extend About Us: We're partnering with a growing, forward-thinking technology consultancy dedicated to building scalable, reliable, and high-performing digital products that deliver exceptional user experiences. Role Overview: As … a Senior Front-End Engineer, you'll play a key role in designing and developing high-quality user interfaces using Vue.js . You'll collaborate closely with designers, product managers, and backend engineers to create performant, maintainable, and visually engaging applications that drive the best possible outcomes for our customers. Key Responsibilities: Develop and maintain front-end applications … TypeScript, HTML5, and CSS3 Experience integrating with RESTful APIs and backend services Familiarity with component libraries, state management (Vuex/Pinia), and build tools (Vite/Webpack) Knowledge of software design principles, testing frameworks (Jest/Vitest), and version control (Git) Exposure to cloud environments (AWS/Azure/GCP) and CI/CD pipelines is a plus We More ❯

Senior Software Engineer - 6 Month Contract Start Date: ASAP Rate: Market rates, outside ir35 Contract Length: 6 months Location: Manchester, hybrid Key Responsibilities Design, build, and maintain scalable backend services using Java, aligning with best practices for performance, reliability, and maintainability. Work with containerisation/orchestration technologies (Kubernetes) to deploy, manage, and scale services. Develop and maintain More ❯

Senior Software Engineer - 6 Month Contract Start Date: ASAP Rate: Market rates, outside ir35 Contract Length: 6 months Location: Manchester, hybrid Key Responsibilities Design, build, and maintain scalable backend services using Java, aligning with best practices for performance, reliability, and maintainability. Work with containerisation/orchestration technologies (Kubernetes) to deploy, manage, and scale services. Develop and maintain More ❯

Senior Embedded C++ Software Engineer 62ph (Inside IR35) Southampton (Hybrid) Initial 6 month contract Our Southampton facility is a leading UK centre of excellence for electro-optics, photonics, and laser-based technologies. The site focuses on the design, development, and manufacture of advanced systems used across defence, aerospace, and security applications. We play an important role in … supplying critical technologies to both the UK armed forces and international partners, contributing to next-generation capabilities in multiple domains. We are on the hunt for talented software engineers to support our Integrated Sensors & Protection line of business. Direct industry experience is not required, we are happy to explore all backgrounds. We want to develop a new generation of … features and capabilities using innovative software solutions and we need you to create them. Essential Bare metal embedded C++ software development Embedded interfaces e.g. CAN bus, I2C, SPI, GPIO Familiarity with the tools and approaches to embedded development Work in our Southampton office 1-4 days a week. Employees are welcome to work onsite 5 days a week More ❯

Senior Embedded C++ Software Engineer £62ph (Inside IR35) Southampton (Hybrid) Initial 6 month contract Our Southampton facility is a leading UK centre of excellence for electro-optics, photonics, and laser-based technologies. The site focuses on the design, development, and manufacture of advanced systems used across defence, aerospace, and security applications. We play an important role in … supplying critical technologies to both the UK armed forces and international partners, contributing to next-generation capabilities in multiple domains. We are on the hunt for talented software engineers to support our Integrated Sensors & Protection line of business. Direct industry experience is not required, we are happy to explore all backgrounds. We want to develop a new generation of … features and capabilities using innovative software solutions and we need you to create them. Essential Bare metal embedded C++ software development Embedded interfaces e.g. CAN bus, I2C, SPI, GPIO Familiarity with the tools and approaches to embedded development Work in our Southampton office 1-4 days a week. Employees are welcome to work onsite 5 days a week More ❯

A Software Engineer is sought for a contract position in Barrow-in-Furness, Cumbria. Hybrid working is available, with 2 days per week needed on-site. This role will provide the chance to design exciting new products in a fast paced highly skilled team, whilst maintaining high standards of innovation and creativity. Core Duties Designing embedded software solutions to meet allocated requirements Software coding to implement agreed designs Undertaking testing and verification activities Ensuring software development standards, policies and procedures are adhered to Scheduling work to meet target timescales and budget demands Working closely with other teams, e.g. electrical, during solution development Proactively reporting upwards to management and the business, so that they are … and Qualifications Essential skills Embedded C programming ability and C# programming. Understanding of embedded systems concepts and related protocols, e.g. CAN, SPI, RS-422. A thorough understanding of the software development lifecycle from design to deployment, including supporting in house and customer trials Familiarity with PLM tools (TeamCenter) and the links to the ERP system (SAP) Good understanding of More ❯

A Software Engineer is sought for a contract position in Barrow-in-Furness, Cumbria. Hybrid working is available, with 2 days per week needed on-site. This role will provide the chance to design exciting new products in a fast paced highly skilled team, whilst maintaining high standards of innovation and creativity. Core Duties Designing embedded software More ❯

Role: Contract Senior Backend Software Engineer - Node.js 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 More ❯

I'm currently recruiting for a long-term contract position to start ASAP. The opportunity is outside IR35 and remote with flexibility on rates. Project Scope - Develop new software services in a modern programming language to replace legacy systems and enable distributed operation. - Implement reliable communication layers and ensure seamless integration between software and hardware. - Design and deliver … fault-tolerant solutions capable of operating in demanding environments. - Support testing, verification, and documentation to maintain high standards across the project lifecycle. Key Skills - Very experienced in professional software development, especially Rust - Proficiency in Python or similar higher level language - Experience with Linux-based development - Experience with inter-process communication protocols If you think you'd be a good More ❯

Must-Have (Non-Negotiable): 10+ years of professional software engineering experience, with 5+ years in Go. Proven ability to solve complex problems end-to-end, not just implement tickets. Deep understanding of Go's concurrency model (goroutines, channels, memory model). Strong grasp of computer fundamentals: memory, CPU, I/O. Experience with distributed systems, APIs, and cloud-native More ❯

Must-Have (Non-Negotiable): 10+ years of professional software engineering experience, with 5+ years in Go. Proven ability to solve complex problems end-to-end, not just implement tickets. Deep understanding of Go’s concurrency model (goroutines, channels, memory model). Strong grasp of computer fundamentals: memory, CPU, I/O. Experience with distributed systems, APIs, and cloud-native More ❯