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Contractor 134
software engineer

134 software engineer jobs found

CL
Dec 30, 2025  
DevOps Software Engineer
Our client, a prominent name in the Defence & Security sector, is seeking a dedicated and passionate DevOps Software Engineer to join their team on a contract basis. This exciting opportunity will involve working with cutting-edge technologies to develop innovative solutions for national security. Key Responsibilities: Writing clean, secure code following a test-driven approach Creating code that is open by default and easy for others to reuse Translating logical designs into physical designs Producing detailed designs Effectively documenting all work using required standards, methods, and tools, including prototyping tools where appropriate Working with well understood and emerging technologies and identifying appropriate patterns Integrating API/UI components with existing data stores and APIs Maintaining and developing existing architectural components including Data Ingest, Data Stores, and REST APIs Participating in sprint ceremonies with the agile team, attending daily...
IR35 Status:
Unknown Status

CV-Library Romsey, Hampshire Contractor
CL
Dec 27, 2025  
Contract Java Software Engineer
Software Engineer - 11 Month Contract - Inside IR35 - Hybrid Manchester- ASAP start I'm looking for a Java Software Engineer to build scalable backend systems and delivering high-quality solutions for a client. ✅ Must-Have Skills Java Spring Boot REST APIs Unit Testing ✨ Nice-to-Have Clean Architecture, Dependency Injection, TDD Kubernetes, GitLab CI, Coroutines, Grafana About the Role As a Software Engineer, you'll own technical execution across the tech stack, delivering robust solutions aligned with business requirements. You'll ensure high-quality code and test automation, collaborate across teams, and contribute to architectural decisions. Key Responsibilities Build and maintain software applications using best practices and design patterns Ensure code quality through testing and refactoring Own services end-to-end, monitor performance, and manage deployments Resolve production issues and improve system reliability Provide architectural guidance and design scalable...
IR35 Status:
Inside IR35

CV-Library Manchester, Greater Manchester Contractor
CL
Dec 27, 2025  
Robotic Software Engineer
Role: Robotic Software Engineer Location: Cambridge, UK Work model:Onsite Contract duration-6 Months We are seeking a Robotic Software Engineer for a pioneering life sciences organization. In this hands-on role, you will contribute to software design, robotic control, and cross-disciplinary collaboration, helping to deliver scalable and cost-effective manufacturing solutions for advanced therapies. Responsibilities Contribute to all stages of software and product development including analysis, architecture, prototyping, implementation, and testing Collaborate closely with hardware and systems teams to integrate robotic automation solutions Develop and debug code for robotics and automation systems Apply technical breadth to quickly grasp new ideas and contribute across product development and manufacturing teams Support product lifecycle activities and contribute to scalable manufacturing solutionsRequired Skills Bachelor's degree or higher in Engineering, Computer Science,...
IR35 Status:
Unknown Status

CV-Library Cambridge, Cambridgeshire Contractor
CL
Dec 27, 2025  
Software Engineer (Java)
Backend Engineer We are seeking a Backend Engineer with strong Java (Spring Boot) expertise to build scalable services. Core Tech Kotlin (+ Java), Spring Boot, Gradle, IntelliJ Coroutines, Kubernetes, Gitlab CI, Harness, Sonar OpenTelemetry, Grafana We Look For High Autonomy and ownership of projects. Experience with large, multi-module codebases. Data-driven decisions (experimentation/feature toggles). Collaboration with Product/UX/Test stakeholders. Examples of past projects and implementing for accessibility. Randstad Technologies is acting as an Employment Business in relation to this vacancy
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Dec 27, 2025  
Software Engineer - SC Cleared
Software Engineer - SC Cleared £600 - £680 a day (Inside IR35) Location: Woking Hybrid - 3 days a week on site Duration: 6 months Clearance: SC Clearance required You will join a consultancy delivering digital transformation to the MoD. Areas of Responsibility: Writing clean, secure code following a test-driven approach Create code that is open by default and easy for others to reuse Translate logical designs into physical designs Produce detailed designs Effectively document all work using required standards, methods and tools, including prototyping tools where appropriate Work with well understood and emerging technologies and identify appropriate patterns Integrating API / UI components with existing data stores and APIs Maintain and develop existing architectural components including Data Ingest, Data Stores and REST APIs Participate in sprint ceremonies with the agile team, attending daily stand-ups, epic decomposition, demos and planning sessions. Assist the wider team...
IR35 Status:
Inside IR35

CV-Library Woking, Surrey Contractor
CL
Dec 27, 2025  
Software Engineer - SC Cleared
Software Engineer - SC Cleared £600 - £680 a day (Inside IR35) Location: Southampton Hybrid - 3 days a week on site Duration: 6 months Clearance: SC Clearance required You will join a consultancy delivering digital transformation to the MoD. Areas of Responsibility: Writing clean, secure code following a test-driven approach Create code that is open by default and easy for others to reuse Translate logical designs into physical designs Produce detailed designs Effectively document all work using required standards, methods and tools, including prototyping tools where appropriate Work with well understood and emerging technologies and identify appropriate patterns Integrating API / UI components with existing data stores and APIs Maintain and develop existing architectural components including Data Ingest, Data Stores and REST APIs Participate in sprint ceremonies with the agile team, attending daily stand-ups, epic decomposition, demos and planning sessions. Assist the wider...
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
Dec 27, 2025  
DevOps Software Engineer
DevOps Software Engineer £600 - £680 a day (Inside IR35) Location: Southampton Hybrid - 3 days a week on site Duration: 6 months Clearance: SC Clearance required You will join a consultancy delivering digital transformation to the MoD. Areas of Responsibility: Writing clean, secure code following a test-driven approach Create code that is open by default and easy for others to reuse Translate logical designs into physical designs Produce detailed designs Effectively document all work using required standards, methods and tools, including prototyping tools where appropriate Work with well understood and emerging technologies and identify appropriate patterns Integrating API / UI components with existing data stores and APIs Maintain and develop existing architectural components including Data Ingest, Data Stores and REST APIs Participate in sprint ceremonies with the agile team, attending daily stand-ups, epic decomposition, demos and planning sessions. Assist the wider team...
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
Dec 26, 2025  
Android Software Engineer
Senior Android Engineer | Kotlin, Jetpack Compose, Modular Architecture Location: Manchester Are you a Android Engineer ready to move beyond feature development and architect the future of a large-scale, multi-module application? We are seeking a high-autonomy technical leader to drive the adoption of modern practices, mentor peers, and make data-driven decisions alongside Product and UX stakeholders. What You Must Bring: 5+ years of professional Android development experience, with a focus on Kotlin. Expertise in Jetpack Compose for building modern, adaptive UI. Hands-on experience with modern concurrency tools: Kotlin Coroutines and Flow. Proven experience working on large-scale applications with a modularized or multi-module architecture. Familiarity with dependency injection frameworks (e.g., Hilt, Dagger, Koin). Strong understanding of network communication using Retrofit and OKHttp. Nice-to-Have Skills: Experience with Kotlin Multiplatform (KMP) or sharing logic...
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Dec 25, 2025  
Software Engineer (Java)
Backend Engineer We are seeking a Backend Engineer with strong Kotlin and Java (Spring Boot) expertise to build scalable services. Core Tech Kotlin (+ Java), Spring Boot, Gradle, IntelliJ Coroutines, Kubernetes, Gitlab CI, Harness, Sonar OpenTelemetry, Grafana We Look For High Autonomy and ownership of projects. Experience with large, multi-module codebases. Data-driven decisions (experimentation/feature toggles). Collaboration with Product/UX/Test stakeholders. Examples of past projects and implementing for accessibility. Randstad Technologies is acting as an Employment Business in relation to this vacancy
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Dec 25, 2025  
Embedded Software Engineer
Embedded Software Engineer Location: Remote with some travel to Malvern (2 days per week) Duration: 6 months (with a strong likelihood of extension) Rate: Up to £600 per day via an approved umbrella company Must be willing to go through SC Clearance Our client, a leading organisation in innovative electronics systems, is hiring for a reputable client to join their dynamic team. This is an exciting opportunity for a skilled Embedded Software Engineer to contribute to mission-critical projects that push technological boundaries. What you'll be doing: * Developing and maintaining software for advanced electronic systems, working closely with multidisciplinary teams. * Applying rigorous engineering practices throughout the entire lifecycle - analysing, designing, implementing, testing, and supporting solutions. * Communicating effectively with stakeholders and customers at all levels to ensure project success. * Innovating digital hardware integration to create novel embedded...
IR35 Status:
Unknown Status

CV-Library Malvern, Worcestershire Contractor
CL
Dec 24, 2025  
Software Engineer - Cameo/Rhapsody
Software Engineer (Cameo/Rhapsody) - Bristol - £65 per hour (Umbrella) 12-month contract | SC clearance required | Fully onsite | 4-day week available A leading defence engineering organisation is looking for an experienced Software Engineer to join the team in Bristol. You'll be working on cutting-edge tools and software architectures that support the next generation of Air Defence Systems. This is a hands-on role in a highly technical environment. You'll develop new engineering tools, work closely with CI/CD pipeline teams, and help shape the way complex systems are designed, integrated and verified. If you enjoy solving problems, improving engineering workflows and working across disciplines, this is a great opportunity. What you'll be doing Designing and developing new software tools and architectures used across major defence projects. Working closely with CI/CD specialists to integrate your tools into automated pipelines. Explaining how tools should be used and...
IR35 Status:
Unknown Status

CV-Library Bristol, UK Contractor
CL
Dec 24, 2025  
Embedded Software Engineer - ADA
Embedded Ada Software Engineer (Contract) Location: Stevenage Rate: Up to £70 per hour (umbrella) Clearance: SC required to start (UK-Eyes-Only) Contract: 6 months, likely extension Working Pattern: Fully on-site, compressed week available We're looking for an experienced Embedded Ada Software Engineer to join a busy software team working on high-integrity, real-time defence systems. You'll play a central role in developing and testing embedded software for PowerPC-based platforms, contributing to a portfolio of innovative and mission-critical products. What you'll be doing Developing real-time embedded software in Ada Testing embedded software on host and target platforms Creating test requirements, test scripts and documentation Using debuggers, probes, oscilloscopes and logic analysers Supporting integration with systems, electronics and test teams Working independently while contributing to a small, collaborative team Producing clear, professional documentation...
IR35 Status:
Unknown Status

CV-Library Stevenage, Hertfordshire Contractor
CL
Dec 21, 2025  
Software Engineer
Role: Software Engineer Location: Eastleigh(Hybrid) Duration: 12 months Inside IR35: Umbrella About our client: Our client is a leading aerospace engineering company specializing in jet engines, avionics, and integrated systems for both military and commercial aircraft. They operate major UK facilities, including maintenance, repair, and overhaul (MRO) sites Job Description Summary The Ground Application Software Engineer designs, builds, and sustains ground-based software applications and services that support mission-critical operations, including data ingestion, processing, and integration with back-end services and hardware systems. This role partners closely with product, systems, platform, data, and test teams to deliver high-quality, secure, and reliable software that improves Safety, Quality, Delivery, and Cost. Essential Responsibilities As a Ground Applications Software Engineer in the Aircraft Services Department, you will; Drive design reviews, define...
IR35 Status:
Inside IR35

CV-Library Eastleigh, Hampshire Contractor
CL
Dec 21, 2025  
Contract C++ Software Engineer – Inside IR35
Contract C++ Software Engineer – Inside IR35 Avanti Recruitment is looking for a C++ Software Engineer to support long-term defence projects involving real-time processing, high-performance computing and mission-critical software. Prior defence experience is preferred, and experience with sonar or signal processing will be highly advantageous. You’ll be working in a C++-focused environment across system design, algorithm development, optimisation, simulation/modelling and complex data handling. Key Skills * C++ * UML * TCP/IP network * Linux * Open Architectures * Databases / SQL Additional Details * Onsite requirement * SC clearance required to start * Sole UK nationality required * 6-month contract with extensions expected * Inside IR35 If you are currently available, match the description and are interested, please apply online today
IR35 Status:
Inside IR35

CV-Library East Knighton, Dorset Contractor
CL
Dec 06, 2025  
C++ Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit a C++ Software Engineer subcontractor on an initial 6 month contract, with very likely extension.  The role will be onsite 4 days per week.  A 4 day working week is OK (Monday to Thursday).   Rate: £65.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday). 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   Job Description: The company are a world leader in missile and missile systems looking for a highly capable and adaptable to join our Development Facility in Bristol. Join the growing dynamic Software team in Bristol in developing the latest mission-critical defence systems....
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Nov 27, 2025  
C# / C++ Software Engineer
World Class Defence Organisation is currently looking to recruit a C# / C++ Software Engineer subcontractor on an initial 12 month contract.  The department are happy to consider candidates with a mixture of C# and C++ or someone with just C# experience. Job Title: C# / C++ Software Engineer Rate: £65.00 per hour Location: Stevenage Hybrid / Remote working: The role will be a hybrid role of 3 or 4 days per week onsite 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)    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 and synthetic environments to provide visualisations,...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Nov 26, 2025  
Embedded C / C++ Software Engineer
World Class Defence Organisation based in Stevenage is currently looking to recruit an Embedded C/C++ Software Engineer subcontractor on an initial 6 month contract.    Hourly Rate: £70.00ph (Umbrella).  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 likely be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday).  Opportunities for occasional remote working. 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   Embedded C / C++ Software Engineer Job Description: The company is a world leader in missile and missile systems looking for a highly capable and adaptable Engineers to join the Development Facility in Stevenage, Hertfordshire. You will be responsible for developing the software through the full lifecycle for...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Nov 13, 2025  
C / C++ Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit a C / C++ Software Engineer subcontractor on an initial 6 month contract, with very likely extension.  The role will be onsite 4 days per week.  A 4 day working week is OK (Monday to Thursday).   Rate: £65.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday). 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   Job Description: The team, at the 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. This is a very hands-on role and...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Nov 02, 2025  
Embedded C++ Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit an Embedded C++ Software Engineer subcontractor on an initial 6 month contract.  The role can be worked on a 4 day week basis (Monday to Thursday) but due to the nature of the role, the position will need to be based onsite.   Hourly Rate: £65.00ph (Umbrella).  Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will likely be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday).  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   Embedded C++ Software Engineer Job Description: Join a growing Software team in Bristol, working as part of a dynamic team to develop and deliver innovative solutions by exploiting a wide portfolio of software...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Oct 31, 2025  
C++ Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit a C++ Software Engineer subcontractor on an initial 6 month contract, with very likely extension.  The role will be onsite 4 days per week.  A 4 day working week is OK (Monday to Thursday).   Rate: £65.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday). 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   Job Description: The company are a world leader in missile and missile systems looking for a highly capable and adaptable to join our Development Facility in Bristol. Join the growing dynamic Software team in Bristol in developing the latest mission-critical defence systems....
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
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