166 software engineer jobs found

Embedded Software Engineer | 6-Month Contract (Outside IR35) | Cambridge Location: Cambridge, UK Contract Type: 6 months (Outside IR35) Rate: Competitive (DOE) Security Clearance: SC Clearance required About the Role We are working with a leading UK defence and security technology consultancy, engaged in developing cutting-edge solutions that protect the UK from emerging technological and cyber threats. As an Embedded Software Engineer, you’ll work alongside a multi-disciplinary team of scientists and engineers to design, develop, test, and deliver prototype solutions. This is a hands-on, technically challenging role where your work will have real-world impact. Responsibilities: Develop embedded software for high-tech systems, primarily in C (Linux environment) Collaborate with teams on design, prototyping, and full product lifecycle development Debug and optimise software and hardware interfaces Contribute to technical problem-solving and innovative solutionsRequired...

Guidance & Control Software Engineer (Interception Systems) Location: North London - Hybrid Type: Contract - Outside IR35 Rate: Starting at £50 per hour DOE About the Role Our client develops advanced autonomous weapon and interception technologies designed for high-speed target engagement in contested environments. The programme centres on a vision-guided one-way aerial system capable of autonomously detecting, tracking, and intercepting manoeuvring objects. The software architecture combines real-time perception with predictive guidance and control. This role will be central to the development of the onboard flight and guidance stack, implementing estimation, tracking and control algorithms in performance-critical C++ code. The engineer will work closely with perception, simulation and hardware teams to ensure reliable terminal behaviour under real-world conditions. The Guidance & Control Software Engineer position suits an engineer with experience in missile...

I'm looking for an experienced AI Engineer to join an exciting, fast‑growing AI start‑up on a 6‑month contract. This is a great opportunity to work on cutting‑edge AI products and play a key role in designing, building and deploying real‑world AI systems. Tech Requirements We are looking for someone with strong commercial experience in: AI Engineering – designing, building and deploying AI systems TypeScript Node.js Python AWS CloudDesirables Prior AI start‑up experience Ability to thrive in fast‑moving, high‑growth environmentsContract Details 6‑month initial contract Outside IR35 Fully remote (must be based in the UK) Must have full right to work in the UK

Senior Engine Control Software Engineer Location: Hethel, UK Contract: Inside IR35 | 3 Month Contract Role Summary The Senior Engine Control Software Engineer will play a pivotal role within a high-performance powertrain environment, leading the design and delivery of embedded control software for next-generation V6 and V8 turbocharged engines and transmission platforms. This Senior Engine Control Software Engineer position focuses on robust, production-level ECU software, ensuring quality, compliance, and performance across demanding operating conditions. Role & Responsibilities Lead development of embedded engine control software for advanced propulsion systems Implement control and diagnostic software for new engine and transmission features using C/C++ Collaborate with Controls Design Engineers, Systems Engineers, and Architects to define and align software and functional architectures Develop, test, and maintain production-level ECU software ensuring MISRA compliance...

Location: Stevenage OR Bristol (fully onsite) Duration: 12 month contract Rate: £65ph UMB (Inside IR35) Role details: Our client, a leading consultancy in the defence and aerospace sector, is currently seeking a C# Software Engineer to join their dynamic team. This is a contract position available in either Stevenage or Bristol, with an initial duration of 12 months and the potential for extension. Key Responsibilities: The role supports the development of the world's most advanced defence systems from concept through to in-service support and training, utilising a range of simulation technologies such as digital twins and emulators. Collaborating with Project Leads and Simulation Architects, you will design and develop simulation components representing an end-to-end weapon system in a synthetic environment using C#, C++, and integration simulations, adhering to industry standards. You will be a part of a heterogeneous agile development team consisting of engineers from...

Job Title: SC Cleared Senior Software Engineer Location: Farnborough, Malvern or Portsmouth Duration: 6 months with possible extension Rate: Up to £820 per day via an approved umbrella company Must be willing and eligible to go through the SC Clearance process Are you a talented and motivated Software Engineer with a passion for delivering innovative solutions? Our client, a reputable organisation supporting maritime test and evaluation facilities, is hiring for a Senior Software Engineer to join their dynamic engineering team. This is an exciting opportunity to work on modernising critical systems and contribute to cutting-edge projects in a collaborative environment. What you'll be doing: Supporting the maintenance and development of new systems to enhance maritime test and evaluation capabilities. Designing, developing, integrating, testing, and delivering complex real-time software solutions. Leading technical tasks and collaborating effectively with stakeholders,...

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...

Role Details: Contract Length: 3–6 months (potential to go permanent) IR35: Outside IR35 Location: Remote, with occasional travel to London/Kent preferred Day Rate: £300–£325 per day  Key Requirements: Hands-on exposure to Azure AI and Machine Learning Experience with Agentic AI, RAG systems, and GraphRAG At least 10+ years’ experience in .NET  Please note: This role cannot offer sponsorship. Applicants must have full rights to live and work in the UK

We are seeking an experienced Software Engineer with strong capability across LabVIEW, test development, and hardware interface work. This role sits within a fast‑paced engineering environment and involves supporting software development, test automation, and commissioning activities for complex engineering systems. Key Responsibilities Develop, optimise, and maintain LabVIEW-based test solutions. Support hardware interface testing and integration work across various systems. Contribute to commissioning activities in a live workshop/test environment. Work collaboratively across software, test, and engineering disciplines. Troubleshoot test rigs, instrumentation setups, and hardware interfaces. Produce clear documentation and ensure test systems meet engineering standards. Essential Skills Strong LabVIEW experience - this is the core priority. Background in test development, instrumentation, and hardware interface testing. Experience working in fast‑paced engineering sectors...

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...

Software Engineer (C#, C++) (5 OPENINGS) JOB LOCATION: Stevenage / Bristol SECURITY CLEARANCE LEVEL - SC Start (BPSS- To start, Dependent on Programme) UKEO DURATION: 12+ Months Minimum (Extension possibility- Yes, Dependent on Performance) WORK PATTERN: Work structure- 3-4 days on site & the rest remote (some programmes require fully onsite). First 3 months full time on site regardless. Overtime: Yes (Project dependant) PAY RATE: £60 - £65 Per Hour Umbrella Inside IR35 Essential Skillset & Tools essential: desktop C# desired: Experience of hardware integration Overview: 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 and synthetic environments to provide visualisations, demonstrations, verification & validation as well as training capability and support. Responsibilities: • The...

Job Title: Senior Software Engineer in Test Type: Inside IR35 Contract Rate: £600-£650 per day Duration: 6 months minimum (likely to extend) Location: London - 3 days on site (Canary Wharf)  A large fintech business are looking for a senior-level quality engineer with a strong software engineering mindset to help shape and safeguard new UI and platform capabilities across complex workflow-driven systems on a contract-basis. This role sits embedded within product engineering, operating in a shared ownership model alongside Java and React developers, with a heavy emphasis on automation. What you’ll be doing Building and maintaining automated coverage across the stack, from APIs through to user journeys, using established internal tooling and frameworks. Evolving existing test frameworks where required, while staying aligned with core engineering standards. Working closely with frontend and backend engineers to ensure critical paths are well understood, well tested, and...

Our client, a prominent organisation within the Defence and Security sector, is seeking a highly skilled IAC - Orchestration Software Engineer with SC clearance to join their team on a contract basis. This role involves supporting the design, development, and validation of infrastructure automation components that underpin complex military and security systems. You will work at the forefront of automation technology, creating solutions that integrate hardware features and external APIs, ensuring reliable, repeatable deployments within critical environments. Key Responsibilities: * Design and develop automation modules using Python3, Ansible, Jenkins, Bash, and PowerShell, focusing on hardware components and external services. * Reverse engineer legacy applications and manual build instructions to craft dynamic, zero-touch automation packages. * Create high-quality, production-ready code aligned with industry standards and internal policies. * Utilise version control tools...

World Class Defence Organisation is currently looking to recruit a Java Software Engineer subcontractor on an initial 12 month contract.     Job Title: Java Software Engineer Rate: £65.00 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: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)                                                                                                                                           Interview Process: One stage Video Interview Java Software Engineer Job Description: The team, at the Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining their enviable reputation for safety, performance and dependability. This...

JAVA Software Engineer JOB LOCATION: Bristol SECURITY: SC is Must DURATION: 12+ Months (Possibility for Extensions) TYPE: Contract WORK PATTERN: Mon –Fri – Full time onsite/ Open to 4 days compressed PAY RATE: £65 /hr (Umbrella Inside IR35) Overview of Department: Our team, at our Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining our enviable reputation for safety, performance and dependability. Responsibilities: This is a very hands-on role and requires the continued design and development of new and evolving software tools and architectures, and the instantiations for future products. Perfect for a Software Engineer who is proactive and takes the initiative. Skillset / Experience Required: • A strong background in software engineering, its realisation and system wide impact. • Experience of working in Java • Collaborative, open approach to development and have the ability to work well...

Java Software Engineer with DDS and RTOS required for long term contract assignement based in Bristol Overview of department: Our team, at our Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining our enviable reputation for safety, performance and dependability. Responsibilities: This is a very hands-on role and requires the continued design and development of new and evolving software tools and architectures, and the instantiations for future products. Perfect for a Software Engineer who is proactive and takes the initiative. Skillset/experience required: * A strong background in software engineering, its realisation and system wide impact. * Experience of working in Java * Collaborative, open approach to development and have the ability to work well in a team and maintain momentum during development. * Experience of working across the entire software development process from engaging with requirement...

We are seeking experienced Software Engineers with strong PLC and SCADA expertise to support cutting-edge defence technology development in Motherwell, Lanarkshire. You'll join a multi-disciplinary team delivering high-quality software solutions in line with recognised industry standards. ** Please note ** Applicants MUST be a UK passport holder & born in the UK due to the nature of this contract. Role: Software Engineers - PLC & SCADA Location: Motherwell Contract: 6 months initially but likely to be extended up to 23 months maximum. 37.5 hours per week. Pay rate: £45 - £60 per hour (PAYE only) Main responsibilities: * Develop innovative, high quality software for leading UK defence projects * Utilising a variety of tools and programming languages, contribute across the full software lifecycle in a collaborative team * Support junior team members and lead in review/assurance activities * Design, implement, test, and deploy control system solutions Ideal...

I'm recruiting for a small business in Cheltenham who are looking for an Embedded Software Contractor on a 3 month contract (outside IR35). The work is based around Zephyr RTOS on Nordic chips. Previous experience (in-depth!) is needed 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: 3 months Skills required for the Embedded SW Engineer: * C * Zephyr RTOS * Nordic chips * Linux If you're interested, please apply below or get in touch with any questions Cheers, Nathan

World Class Defence Organisation based in Bristol is currently looking to recruit 2x Embedded ADA Software Engineer subcontractors on an initial 12 month contract.  The role will likely be required to be onsite, but it can be worked on a 4-day week basis.   Essential - ADA, Background in safety critical software. Desirable - Linux, Doors, Dimensions, UML, Mascot etc.   Contract Duration: 12 Months initially and then ongoing. Hourly Rate: £68.00ph (Umbrella).   Overtime rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’   Embedded ADA Software Engineer Job Description: We work on technology that is at the forefront of European missile system design, delivering safe, secure, and reliable products to our customers. The System software department covers all aspects of command and control software (C2) for both land and maritime missile systems. We are expanding the Sea Viper and Sea Ceptor missile C2 team for the development of the next generation of...

Software Engineer (Java) SC Clearance Required Certain Advantage are hiring for a Software Engineer based in Portsmouth. This role is on an initial 12-month contract and is required to be onsite 3 days a week.   Your responsibilities: Contribute across the full software development lifecycle, including design, development, testing, and deployment. Design software solutions using UML/SysML and contribute to technical architecture within a microservices environment. Develop high-quality Java applications using Spring Boot, Spring Framework and related technologies. Implement and maintain RESTful web services over HTTPS within distributed systems. Write and maintain automated tests, ensuring quality and reliability are built into the solution from the outset. Participate in Agile ceremonies including sprint planning, estimation, reviews and retrospectives. Collaborate closely with team members and wider stakeholders to design, implement and test new product features. Contribute...