58 contract software engineer jobs found

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract click apply for full job details

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract. This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale. Key Responsibilities Design, develop and maintain backend services using Java and Kotlin. Build and enhance RESTful APIs within a microservices architecture. Develop secure, scalable and high-performance applications. Collaborate with Product Managers, Engineers and technical...

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract. This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale. Key Responsibilities Design, develop and maintain backend services using Java and Kotlin. Build and enhance RESTful APIs within a microservices architecture. Develop secure, scalable and high-performance applications. Collaborate with Product Managers, Engineers and technical...

Senior Java & Kotlin Backend Engineer Location: London (Hybrid - Wednesday office attendance required) Contract: Initial 2 months IR35: Outside IR35 Start Date: ASAP The Role We 're working with a leading technology organisation seeking an experienced Senior Java & Kotlin Backend Engineer to join their engineering team on an initial two-month contract. This role offers the opportunity to contribute to greenfield backend development, building scalable, cloud-native microservices within a modern engineering environment. You 'll work alongside cross-functional teams to design, develop and deliver high-quality backend solutions that are secure, reliable and built for scale. Key Responsibilities Design, develop and maintain backend services using Java and Kotlin. Build and enhance RESTful APIs within a microservices architecture. Develop secure, scalable and high-performance applications. Collaborate with...

Candidate Specification - SourceWise Solutions Staff Software Engineer (Backend / Platform) This is a remote contract role with occasional visits to the client's office when required. The engagement is Outside IR35, offering a daily rate of £500 About SourceWise SourceWise Solutions partners with innovative global technology companies to build high-performing engineering teams. We connect experienced engineers with organisations building modern, scalable software platforms. About the Opportunity This Staff Software Engineer role is with one of our international technology clients. You will influence architecture, engineering practices, and technical direction while solving complex, high-impact problems. Key Responsibilities · Lead architecture and design of scalable distributed systems. · Own complex cross-team engineering challenges. · Drive technical strategy and influence engineering decisions. · Improve platform scalability, reliability,...

Candidate Specification - SourceWise Solutions Staff Software Engineer (Backend / Platform) This is a remote contract role with occasional visits to the client's office when required. The engagement is Outside IR35, offering a daily rate of £500 About SourceWise SourceWise Solutions partners with innovative global technology companies to build high-performing engineering teams. We connect experienced engineers with organisations building modern, scalable software platforms. About the Opportunity This Staff Software Engineer role is with one of our international technology clients. You will influence architecture, engineering practices, and technical direction while solving complex, high-impact problems. Key Responsibilities · Lead architecture and design of scalable distributed systems. · Own complex cross-team engineering challenges. · Drive technical strategy and influence engineering decisions. · Improve platform scalability, reliability, and maintainability. ·...

Embedded Software Engineer | 6-Month Contract (Outside IR35) | CambridgeLocation: Cambridge, UK (Onsite) Contract Type: 6 months (Outside IR35) Rate: Competitive (DOE) Responsibilities: Develop embedded software in C (Linux environment) Design, implement, and maintain device drivers Work closely with hardware and systems engineers onsite Required Experience: 3+ years’ embedded software development experience Strong C programming skills in Linux environments Experience with device drivers or kernel-adjacent development Apply: If you're looking for a 6-month Outside IR35 contract in Cambridge, apply with your CV today.

3 Month Contract | Outside IR35 | Remote (UK) bedigital have partnered with fast-growing UK technology business developing cutting-edge AI and cloud platforms that support government, defence and critical national infrastructure. We're looking for an experienced Senior Full Stack Software Engineer to join a highly capable engineering team responsible for building secure, scalable and resilient cloud infrastructure that underpins a mission-critical software platform. The Role Working within a highly collaborative engineering team, you'll design, build and deliver production software across both Back End services and modern web applications. Typical responsibilities include: Designing and developing scalable Back End services using TypeScript and Node.js Building modern React applications and user interfaces Developing REST APIs and event-driven services Working with cloud-native architectures on AWS Designing secure, resilient and maintainable software...

Software Engineer - Avionics/Mission Systems (C++/Ada) - 119393 Location: Bristol (preferred) with regular travel to Yeovil for testing and meetings Duration: 6 months IR35 Status: Outside IR35 Rate: Competitive (dependent on experience) Clearance: BPSS - SC Overview We are seeking an experienced Software Engineer to support the development of mission-critical avionics and aerospace software system click apply for full job details

IT Engineer (Short-Term Contract) | Outside ir35  Location: Office-Based Contract: 3 Months  We're currently recruiting on behalf of a well-established organisation seeking an experienced IT Engineer to provide hands-on support during a busy period of growth and change. This is an excellent opportunity for a versatile IT professional who enjoys a varied role, combining day-to-day technical support with the confidence to take ownership of small projects and provide guidance across the wider IT function. The RoleWorking as part of a small IT team, you'll be responsible for supporting users across a Microsoft-based environment while assisting with the smooth day-to-day running of the IT infrastructure. You'll act as a reliable point of contact for technical issues, helping to prioritise workloads, maintain systems, and ensure a high level of service across the business. Key Responsibilities Provide 1st, 2nd and some 3rd line technical support to internal users. Support and...

*SECURITY CLEARED* Test Engineer 6 Month contract initially + Extensions Based: Remote Rate: £Market rates p/d - (Outside IR35) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make a difference. We have a great opportunity for a number of Test Engineer's to join the team. Key Responsibilities * Design, develop, and execute comprehensive test plans, test cases, and test scripts. * Perform Automation Testing, Functional Testing, System Testing, Software Testing, and User Acceptance Testing (UAT). * Develop and maintain automated test frameworks using Selenium. * Execute API testing using Postman and SOAP UI for REST and SOAP services. * Validate REST APIs and web services, ensuring functionality, performance, and reliability. * Identify, document, prioritise, and track software defects through to resolution. * Collaborate with Agile delivery...

🚨 Senior Playwright SDET | £700/day | Outside IR35 | Front Office Trading | London I'm working with a leading global investment bank looking to hire an exceptional Playwright SDET to join their Front Office Derivatives Technology team. This isn't your typical automation role. You'll be embedded within a high-performing engineering team, working directly alongside developers on a strategic front end trading platform. The rate reflects the calibre of engineer they're looking for. 💰 Package £700 per day Outside IR35 12-month rolling contract 1 day per week in the London office What they're looking for This role is suited to a highly technical SDET who is passionate about automation and enjoys writing production-quality code. You must have: ✅ Strong commercial experience with Playwright ✅ Excellent coding skills in JavaScript and TypeScript ✅ Experience building and maintaining automation frameworks ✅ Previous experience working on...

A Contract position Outside IR35 Hybrid working 3 days on site Our client, a leader in the automotive sector, is currently seeking a Senior Controls Software Engineer to join their dynamic team on a contract basis. This role involves working on the development of Inverter and Motor Control, Battery Management System (BMS), and Charging application software for demonstrator and production projects. You will play a pivotal role in all stages of the software development process, mentor junior engineers, participate in project estimations and planning, and collaborate with clients, suppliers, and other engineering teams. Key Responsibilities: Provide technical delivery and leadership of application software activities Support and mentor junior engineers within the team Create and manage software requirements Participate in the architectural design of the software Implement and test the application software using a model-based development approach Support prototype vehicle...

Network Infrastructure Engineer needed (Outside IR35) Who we are We are a company looking for an experienced Infrastructure Engineer to join our VPN team on a contract basis (Initial 6 months) with the possibility to go permanent if the fit is right. Where are we? This can be a fully remote role, however we would ideally like someone to be able to commute to our office in Haslingden once or twice a month. Job Spec Key Skills - Networking, Virtualisation, Linux and VPN. Job Responsibilities: Moving internal servers to cloud based software, with full integrated back ups on each A new VPN protocol needs to be built, and integrated into our system which runs on an SQL database. We already have a built VPN system, but using obsolete technology, new script, integrating and testing required on multiple routers Migrating current Radius servers to cloud based rather than hardware based.  IP networking and network engineering, assist...

APS/PDW Support Engineer - Contract - Remote - initially 5 days - Outside IR35 - (RL8213) My client is looking for an APS/PDW Support Engineer to support on a specialist APS/PDW support engagement, providing health checks, break/fix support and appliance-level expertise within a restricted-access environment. Role: APS/PDW Support Engineer. Location: Remote IR35 Status: Outside Day Rate: £550 Start Date: ASAP Duration: initially 5 days Overview: We are seeking an experienced APS/PDW Support Engineer to work with one of our long-standing consulting partners on a Microsoft APS (Analytics Platform System)/PDW (Parallel Data Warehouse) requirement. With Microsoft's support for APS/PDW ending on 31 March 2026, the customer is looking for an experienced consultant who can provide ongoing appliance level support, specifically around the APS/PDW data layer rather than the hardware. Please note: The successful consultant must have demonstrated experience...

Technical Project Manager/Scrum Master (Hands-on Development) - Hybrid London Start Date: August/September 2026 Duration: 3-6 months (Likely Extensions) Day Rate: £800-£900 per day (Negotiable) IR35 Status: Outside IR35 Location: London (Hybrid - Minimum 3 days per week onsite) Key Skills & Experience: Technical Leadership & Delivery Proven experience operating as a Technical Project Manager, Scrum Master or Technical Delivery Lead. Strong Agile delivery experience across multiple software development teams. Experience managing complex technical projects within Banking or Capital Markets. Comfortable managing both technical delivery and stakeholder expectations. Strong understanding of software development life cycle, Agile methodologies and engineering best practices. Hands-on Software Development: This is a hands-on technical role. Candidates must remain technically active and able to contribute directly to software development....

A contract Outside IR35 Hybrid - Must be able to do 3 days on site Full lifecycle Embedded C to MISRA development - Aerospace, DO178B/C, Model-Based development. Our client, a key player in the aerospace sector, is currently searching for an Embedded Software Engineer to join their team on a contract basis. This role presents a unique opportunity to work on cutting-edge aerospace projects, focusing on developing and integrating software for advanced controller platforms. Key Responsibilities: Develop embedded software for our controller platform. Produce requirements, design, implementation, and tests for software components. Ensure software life cycle data is produced in accordance with development processes and procedures. Perform hardware/software integration for debugging, verification, and release of software. Contribute improvements to internal procedures and standards. Job Requirements: Bachelor's degree in a related engineering discipline (or equivalent...

Location: Birmingham  Contract Length: 6 Months (minimum) Rate: £60 p/h (Outside IR35) Start Date: ASAP An exciting opportunity has arisen for an experienced Control Systems Engineer to join a leading systems integration team delivering automation solutions in the energy sector. You'll be responsible for developing and commissioning Siemens based control systems, supporting projects from software development through to site commissioning. This is an ideal opportunity for an engineer who enjoys technically challenging projects and is comfortable working both remotely and on customer sites. Key Responsibilities Design and develop PLC software using Siemens TIA Portal Configure Siemens HMI/SCADA systems where required Produce and modify functional design specifications Carry out software testing, FAT and SAT activities Diagnose and resolve technical issues during commissioning Ensure projects are delivered safely, on time and to specification Expereince...

Location: London (Central)  Contract Length: 6 Months (minimum) Rate: £65 p/h (Outside IR35) Start Date: ASAP An exciting opportunity has arisen for an experienced Control Systems Engineer to join a leading systems integration team delivering automation solutions in the energy sector. You'll be responsible for developing and commissioning Siemens based control systems, supporting projects from software development through to site commissioning. This is an ideal opportunity for an engineer who enjoys technically challenging projects and is comfortable working both remotely and on customer sites. Key Responsibilities Design and develop PLC software using Siemens TIA Portal Configure Siemens HMI/SCADA systems where required Produce and modify functional design specifications Carry out software testing, FAT and SAT activities Diagnose and resolve technical issues during commissioning Ensure projects are delivered safely, on time and to specification Expereince...

Greetings from Response Informatics!! We are currently hiring a Dot net Developer for an exciting client engagement. Role: Dot net Developer  Location: Taunton, UK (3 days' travel per month) Positions: Contract (Outside IR35) Clearance: Active SC Clearance Mandatory Please ensure: CV is a maximum of 3 pages Font size: 11 We are seeking an experienced Senior Software Engineer to design, develop, and maintain enterprise-scale Azure-based applications within a secure and highly regulated environment. The role requires strong hands-on expertise in C#, .NET, Azure, and cloud-native development practices. The Senior Software Developer will work closely with Lead Developers, Architects, DevOps Engineers, Testers, and Product Owners to deliver secure, scalable, and maintainable solutions while contributing to engineering excellence and continuous improvement initiatives. Key Responsibilities Design, develop, and maintain applications...