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c software engineer

22 c software engineer jobs found

CL
May 16, 2026  
Contract C# Software Engineer
Contract C# Software Engineer Near Wimbledon   6-month contract Software Engineer role developing C# Windows applications that interface with hardware.  This role is inside IR35 and requires on-site work 3 days per week (full time for the first few weeks). C# Software Engineer skills required - Good analytical skills and experience of code and design review for large projects. Experience of multi-threaded and distributed applications, preferably with an understanding network of protocols. Strong Experience in developing Windows desktop applications in C# Interfacing with hardware/physical products .NET environment, Windows Forms, TCP/IP & UDP protocols  Please apply or call for more information
IR35 Status:
Inside IR35

CV-Library Wimbledon, London, UK Contractor
CL
Mar 12, 2026  
C# / C++ Software Engineer
World Class Defence Organisation is currently looking to recruit 5x C# / C++ Software Engineer subcontractors on an initial 12 month contract.  Desktop C# is the expertise the department are looking for; with some experience with C++ but doesn’t need to be overly extensive. Job Title: C# / C++ Software Engineer Rate: £65.00 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: The role will be a hybrid role of 3 or 4 days per week onsite Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) C# / C++ Software Engineer Job Description: WSSE are integral in the development of weapon systems and system architectures, and as a result we have developed a capability supporting developments across the full product life cycle.   The team integrate real products, models...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Mar 12, 2026  
C# / C++ Software Engineer
World Class Defence Organisation is currently looking to recruit 5x C# / C++ Software Engineer subcontractors on an initial 12 month contract.  Desktop C# is the expertise the department are looking for; with some experience with C++ but doesn’t need to be overly extensive. Job Title: C# / C++ Software Engineer Rate: £65.00 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: The role will be a hybrid role of 3 or 4 days per week onsite Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) C# / C++ Software Engineer Job Description: WSSE are integral in the development of weapon systems and system architectures, and as a result we have developed a capability supporting developments across the full product life cycle.   The team integrate real products, models...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 11, 2026  
Principle Test Engineer
Principal Test Equipment Engineer 100% on site in Edinburgh The opportunity: Are you interested in developing test equipment for some of the most cutting-edge defence and aerospace projects in the UK? If you like the sound of developing test equipment for projects such as the SAAB Gripen jet, then Leonardo would like to hear from you. We are looking for an experienced Principal Test Equipment Engineer to join the development team on a complex Automatic Test Equipment system within Product & MRO Services of the Customer Support Services Solutions (CS3) at our Edinburgh based site. You will be required to work within a multi-disciplined engineering team in the delivery of technical solutions for the project. The successful candidate will be involved in a wide variety of engineering activities including, but not limited to, involvement with the design and development of solutions for Automatic Test Equipment systems, integration testing, qualification, certification and...
IR35 Status:
Unknown Status

CV-Library Edinburgh, UK Contractor
CL
Jun 11, 2026  
C#, WPF, .NET Developer
C#, WPF, .NET Developer is required by global company for an initial 12-month contract. The successful candidate will have experience with detailed design, development, implementation, integration, and testing of software in C# to build windows/web-based applications. The ideal contractor would have experience in software development in C# (.NET Core 2.1+, .NET Framework 4.6+) and Visual Studio 2022. * Experience in WPF, user interface design and MVC/MVVM design patterns. * Experience with connecting to and consuming RESTful web services. * Experience with generic design-patterns (Dependency Injection, Inversion of Control and * similar) and .NET Frameworks (MVVM, WPF, MEF, Entity Framework) in the construction of large and complex software applications. * Experience of using version control (GIT), change control and code quality control/review processes. * Experience of working in SCRUM environments where regular builds, unit tests and integration testing are the norm....
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Jun 09, 2026  
Embedded Software Engineer
I'm recruiting for a small business in Cheltenham who are looking for an Embedded Software Contractor on a 6 month contract (outside IR35). The work is based around Zephyr RTOS on Nordic chips. Previous experience on Zephyr would be hugely beneficial for this. ** Work can be done remotely after an initial period of 3-4 days on-site. Also may require on-site visits to Cheltenham throughout depending on project progression. ** ROLE: Embedded Software Engineer LOCATION: Remote (Cheltenham) RATE: up to £60ph DURATION: 6 months Skills required for the Embedded SW Engineer: * C / C++ * Zephyr RTOS / CMake (massively beneficial) * Nordic chips * Linux * GitHub If you're interested, please apply below or get in touch with any questions Cheers, Nathan
IR35 Status:
Outside IR35

CV-Library GL50, Montpellier, Gloucestershire Contractor
CL
Jun 07, 2026  
IT Support Engineer (Desk side) - SC Cleared
IT Support Engineer (Desk side) - SC Cleared Rate: £25.75 per hour (Umbrella) Duration: 6 months Location: Andover- On-site 5 days a week Your new organisation We are supporting a global leader in advanced technology, delivering complex engineering and IT services in a highly secure environment. Due to increased demand, we are looking for experienced SC‑cleared IT Support Engineers to join an on‑site support team in Andover, providing critical desk side and end‑user support services. This is a long‑term contract opportunity offering stability, a structured working environment, and the chance to contribute to a high‑profile, security‑cleared programme. Your new role You will be responsible for managing incidents and service requests in a Wintel environment, supporting end users across a range of hardware and software issues. You will troubleshoot and resolve faults across laptops, desktops, and mobile devices, including hardware break/fix and system configuration, working...
IR35 Status:
Unknown Status

CV-Library Andover, Hampshire Contractor
CL
May 23, 2026  
FPGA Design Engineer
World Class Defence Organisation is currently looking to recruit 3x FPGA Design Engineer Subcontractors on an initial 12 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bristol depending on your preference Hybrid / Remote working: Hybrid working of 3 days per week onsite Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
FPGA Design Engineer
World Class Defence Organisation is currently looking to recruit 3x FPGA Design Engineer Subcontractors on an initial 12 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bristol depending on your preference Hybrid / Remote working: Hybrid working of 3 days per week onsite Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
May 12, 2026  
BMS Commissioning Engineer
BMS Commissioning Engineer Contract We have a fantastic contract opportunity for an experienced Tridium BMS Commissioning Engineer to join an exciting and prestigious project in London. On offer is an initial 6 month contract (with the potential to extend), c£40 - £48 per hour, and the opportunity to work on one of London’s most interesting new projects in central London The BMS Commissioning Engineer position:- As a BMS Commissioning Engineer, you will have fantastic experience and knowledge of commissioning Building Management Systems, in particular Tridium Niagara.  You will be required to perform software modifications and full commissioning. The project is in central London and is a very prestigious refurbishment of a historical building. The project is a mixed use development incorporating a hotel, high end luxury residences, and shops and will be using state of the art new smart building technology. Key skills of the BMS Commissioning Engineer:- Exceptional technical...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Apr 18, 2026  
C++ Application Software Engineer
World Class Defence Organisation is currently looking to recruit 3x C++ Application Software Engineer subcontractors on an initial 12 month contract.     This role requires: Strong experience in C++ application development. A strong background in software engineering, its realisation and system wide impact. Experience in CI/CD pipelines, GitLab, Docker. Experience of developing software for virtual environments.  Rate: £65.00 per hour Location: Bristol Hybrid / Remote working: The role will likely be onsite – a compressed 4 day week (Monday to Thursday is fine).  There may be some scope for hybrid working (project dependent). Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Apr 18, 2026  
Embedded Software Engineer
World Class Defence Organisation is currently looking to recruit 2x Embedded Software Engineer subcontractors on an initial 6 month contract.     Rate: £68.00 per hour Location: Bristol Hybrid / Remote working: The role will be onsite – a compressed 4 day week (Monday to Thursday is fine) Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)                                                                                                                                           Interview Process: One stage Video Interview Embedded Software Engineer Job Description: We are a world leader in missile and missile systems, seeking a highly capable and adaptable Embedded Software Engineer to join our Development Facility in Bristol. As part of our growing dynamic Software team, you will develop the latest...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Apr 17, 2026  
Systems Performance Modelling Engineer
World Class Defence Organisation based in Stevenage and Bristol is currently looking to recruit a Systems Performance Modelling Engineer subcontractor on an initial 12 month contract.  Your base site can be either Stevenage or Bristol, depending on your preference. The role can be worked on a 4 day week basis (Monday to Thursday) but due to the nature of the work, the position will need to be based onsite.     This role would be suitable for a Simulation and Modelling Engineer (Matlab / Simulink) ideally from the defence or aerospace industry.   Rate: £80.00 per hour Location: Your base site can be either Stevenage or Bristol, depending on your preference Hybrid / Remote working: The role will based onsite.  A compressed 4-Day week of Monday to Thursday is possible Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Apr 17, 2026  
Systems Performance Modelling Engineer
World Class Defence Organisation based in Stevenage and Bristol is currently looking to recruit a Systems Performance Modelling Engineer subcontractor on an initial 12 month contract.  Your base site can be either Stevenage or Bristol, depending on your preference. The role can be worked on a 4 day week basis (Monday to Thursday) but due to the nature of the work, the position will need to be based onsite.     This role would be suitable for a Simulation and Modelling Engineer (Matlab / Simulink) ideally from the defence or aerospace industry.   Rate: £80.00 per hour Location: Your base site can be either Stevenage or Bristol, depending on your preference Hybrid / Remote working: The role will based onsite.  A compressed 4-Day week of Monday to Thursday is possible Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Apr 17, 2026  
Embedded DSP SW Engineer – Software Defined Radio Datalink
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit an Embedded DSP Software Engineer – Software Defined Radio Datalink subcontractor on an initial 6 month contract.     This role would suit a candidate who comes from a mobile communications industry or from the aerospace / defence field. Other industries will be considered too.   Rate: £70 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will based onsite.  A compressed 4-Day week of Monday to Thursday is possible Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview process   Embedded DSP Software Engineer – Software Defined Radio Datalink Job Description:   Join our growing Software team in Stevenage, working as part of a dynamic team to...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Apr 11, 2026  
Embedded Software Engineer
World Class Defence Organisation is currently looking to recruit a Embedded Software Engineer subcontractor on an initial 12 month contract.     Rate: £65.00 per hour Location: Portsmouth Hybrid / Remote working: 2 days per week remote working Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)                                                                                                                                           Embedded Software Engineer Job Description: The role of Embedded Software Engineer is required due to increased demand for the work of our Advanced Developments Group (ADG). The ADG are a small team of highly innovative, enthusiastic engineers providing cutting edge technology solutions to our key customers. Responsibilities: Use your skills and knowledge to prototype innovative wireless solutions You will be primarily developing using C/C++ on embedded platforms Development of embedded...
IR35 Status:
Inside IR35

CV-Library Portsmouth, UK Contractor
CL
Apr 08, 2026  
Software Engineering Manager
Software Engineering Manager Certain Advantage is hiring for a Software Engineering Manager based in the Farnborough area. This role is on a contract basis and is site-based. The Company We’re working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver industry-leading commercial aircraft, and a separate Space and Defence division. Does this sound like your next career move? If you’re ambitious to grow, this may be your next role? The Role: This role is for a Software Engineering Manager—someone ambitious and ready to make an impact. You’ll be results-oriented and driven to succeed. You’ll be working in a small, experienced, and collaborative team, and be responsible for: Lead the day-to-day activities of the software team Plan, design, develop, verify, and integrate the software for the high-altitude, long-endurance Zephyr aircraft. Acting as the technical authority for software, ensuring compliance with safety, performance,...
IR35 Status:
Unknown Status

CV-Library Farnborough, UK Contractor
CL
Apr 03, 2026  
Software Engineer (C++)
C++ Engineer Certain Advantage are hiring for a C++ Engineer based in London. This role is on an initial contract till the end of the year and is hybrid. The company We’re working with an organisation that operates globally, helping power homes, transport, and industries with the energy they depend on every day. The role: Implement solutions using the provided exchange SDKs in different languages such as C++, Rust, Python, Typescript Write software that communicates with exchanges through their APIs, receiving market data and sending orders over the network in different protocols, such as FIX, Websocket or HTTP requests Optimize exchange communication through kernel bypass, optimizing TLS or the connection handling to an exchange Implement trading algorithms based on requirements provided by traders and quants Acquire and develop the necessary trading knowledge to successfully translate the requirements into actual software implementation Continuously improve the...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 07, 2026  
Integration Architect (SOA / Cloud) - URGENT
£750 Per Day, Inside IR35, 12 Month Contract, To Start ASAP Based near Oxford (3-4 DAYS ONSITE INITIALLY) Your new company We are a nationally significant scientific and engineering organisation operating within one of the most complex technical environments in the UK. As part of our long‑term digital modernisation, we are moving away from legacy monolithic applications and establishing a cloud‑based, service‑oriented ecosystem. This shift is essential to supporting the future of our experimental workflows, data services and operational capabilities. As the transition progresses, a major challenge has emerged, while the services now exist in the cloud, they have not yet been shaped into a coherent, well‑designed service architecture. Interoperability, service boundaries, communication patterns and data flow design all require firm direction. We are now looking for a Software Architect with deep SOA expertise to define the foundations of this environment, set the standards and...
IR35 Status:
Inside IR35

CV-Library Oxfordshire, UK Contractor
CL
Jun 06, 2026  
Firmware Developer/Software Developer/Embedded Developer
Firmware Developer/Software Developer/Embedded Developer Firmware Developer required by global manufacturing company for an initial 12-month contract As a Firmware Developer /Software Developer/Embedded Developer you will be required * Design, implementation and testing of Embedded software/firmware to provide machine control solutions for integrated electronics. * Creation, migration, extension and integration of firmware libraries for Microprocessor applications. * Development and execution of test plans to demonstrate functionality of the Embedded software/firmware solutions; including unit, module and integration testing. Project Engineering * Pro-active contribution to development projects with the ability to work with hardware and software engineers to understand the requirements of the whole system. * Effective communication of interfaces and agreed protocols with other development project team members. * Collaboration with 3rd parties to ensure that delivered...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
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