Freelancer UK
  • All Jobs
  • Outside IR35
  • Agencies
  • Post a Job
  • Pricing
  • Guides
  • Sign in
  • Sign up
  • All Jobs
  • Outside IR35
  • Agencies
  • Post a Job
  • Pricing
  • Guides

Email me jobs like this

Email me jobs like this
Refine Search
Refine by IR35 Status
Unknown Status 80 Inside IR35 55 Outside IR35 25
Refine by Categories
Engineering 76 Information Technology 35 Construction 21 Other 6 Automotive 3 Manufacturing 3
Accounting 1 Admin-Clerical 1 Customer Service 1 General Labor 1 Government 1 Management 1 Telecommunications 1
More
Refine by Job Type
Contractor 160
software engineer

160 software engineer jobs found

CL
Feb 15, 2026  
Contract Software Engineer
Software Engineer - Automation (Contract) Location: Tadcaster Contract Length: 8-Week Contract Commencement Date: Tuesday 10 February 2026 Overview of the Company: Our client is a well-established engineering and automation business delivering complex, high-specification machinery into regulated manufacturing environments. They are currently supporting a time-critical project and require an experienced Automation Software Engineer (Contractor) to assist with commissioning and final delivery on site in Tadcaster. This is a hands-on role working alongside Project, Design, and Commissioning teams on advanced automated systems. Skills Required - Software Engineer (Automation) Programming and commissioning using Siemens TIA Portal V19, including Safety (F-PLC) Development of Siemens WinCC Unified HMI applications Hands-on programming and integration of Staubli robotic systems (essential) Experience with motion control and servo drives Implementation of PackML standards...
IR35 Status:
Unknown Status

CV-Library Tadcaster LS24, UK Contractor
CL
Feb 13, 2026  
Embedded Software Engineer
Senior Embedded / SoC Engineer – Adaptive SoC & High-Speed Networking We’re recruiting a Senior Embedded / SoC Engineer to work on complex Adaptive SoC and FPGA platforms supporting next-generation high-speed networking solutions. This is a hands-on engineering role focused on embedded software, verification, or IP design, working across the full SoC development lifecycle from bring-up through integration and debug. Key Responsibilities * Develop, integrate and debug embedded software across bare-metal, Embedded Linux (Yocto) and RTOS (Zephyr) environments * Contribute to SoC verification or IP design using SystemVerilog, UVM and class-based testbenches * Support hardware/software co-simulation, SoC bring-up and system-level debug * Work with high-speed interfaces including PCIe and 100Gb Ethernet * Use Vivado and Vitis within modern FPGA / Adaptive SoC design flows * Collaborate with multi-disciplinary engineering teams in a delivery-focused environment...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Feb 13, 2026  
Senior Software Engineer
Senior Software Engineer - Azure Platforms Location: Warwick (Hybrid working model, monthly travel required, occasional travel to London) About Us Join a leading energy network operator that keeps society connected and drives the transition to a sustainable power future. You'll be part of a team that transforms the energy landscape, integrates renewable solutions, and ensures customers are never left in the dark. As a Senior Software Engineer - Azure Platforms, you will sit across all engineering teams, acting as a key technical leader with an architectural mindset. You'll focus on platform concerns, primarily cloud infrastructure on Azure, before contributing to broader product development and enabling works. Working directly with senior leadership, you'll ensure solutions are scalable, reliable, and aligned with organisational engineering and architecture standards. What You'll Do Act across all engineering teams, addressing platform-level concerns with a focus on Azure...
IR35 Status:
Unknown Status

CV-Library Warwickshire, UK Contractor
CL
Feb 13, 2026  
SC Cleared Senior Software Engineer
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,...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Feb 12, 2026  
Software Engineer - PLC & SCADA
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...
IR35 Status:
Unknown Status

CV-Library Motherwell, North Lanarkshire Contractor
CL
Feb 11, 2026  
Senior Software Engineer
Senior Full Stack Engineer (Java 17, AWS, GraphQL) The Opportunity Join a global leader in the digital product space, building high-concurrency systems for millions of users. We are looking for a Senior Engineer to drive our back-end strategy and cloud deployment using a modern, best-in-class stack. Key Requirements Java Mastery: 5+ years of experience (Java 17+ preferred) with a focus on performance tuning. Spring Ecosystem: Deep expertise in Spring Boot, Data, and Security. Cloud & DevOps: Strong AWS knowledge (ECS/Fargate, Lambda, RDS) and expert proficiency with Docker and CI/CD. Modern APIs: Solid experience designing and implementing GraphQL APIs. Highly Desirable (Full Stack) React.js: 3+ years of experience with complex SPAs. Micro Frontends: Practical experience with MFE architecture. Apply now with your updated CV for immediate consideration. Randstad Technologies is acting as an Employment Business in relation to this vacancy
IR35 Status:
Unknown Status

CV-Library Manchester, Greater Manchester Contractor
CL
Feb 04, 2026  
Java Software Engineer
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)   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 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...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jan 29, 2026  
Contract Embedded Software Engineer
Job Title: Contract Embedded Engineer Location: Outskirts of Basildon (two days per week required on-site) Rate: up to £57pphr (outside of IR35) Duration: 6 months+    Overview:    As part of the embedded engineering team, you will help develop next-generation embedded automation solutions. The role involves designing, developing, and maintaining Linux platforms on ARM-based microprocessors for reliable operation in harsh environments. You will collaborate with cross-functional teams to define specifications, deliver the product, and support its release.    Knowledge needed: - 7+ years of Advanced C++ - object-oriented (OOP) concepts - Experience with cross-compiling, GDB, JTAG. - Microprocessor and microcontroller architectures like Cortex-A series, ARM series, and other general-purpose microcontrollers. - Multi-threaded applications and IPC. - Good experience with Linux -Scripting languages like Shell script/Python. -Experience with communication protocols such as CAN,...
IR35 Status:
Outside IR35

CV-Library Basildon SS16 5NL, UK Contractor
CL
Jan 18, 2026  
Algorithm Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit an Algorithm Software Engineer 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: Work alongside algorithm engineers and technical expert to transcode a large, complex legacy algorithm codebase from ADA to Matlab As part of a wider team, define, distribute and review core activities to enable efficient completion of the transcoding within project...
IR35 Status:
Inside IR35

CV-Library Bristol, UK 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
Feb 11, 2026  
Contract Software Engineers – C# .NET & Ada
We are recruiting multiple experienced Contract Software Engineers to support current and future programmes within a leading defence and Electronic Warfare organisation. These roles sit within a mature engineering environment, delivering mission-critical software across advanced platforms. This advert covers two separate contract roles, each with its own focus, responsibilities, and skill requirements. Role 1: Contract Software Engineer – C# .NET Location: Luton (Hybrid – 4 days onsite, 1 day remote) Security Clearance: Full UK SC required (sole UK nationality essential) Role Summary We are seeking experienced C# .NET Software Engineers who can work with minimal supervision to deliver robust, high-quality software for current and future Electronic Warfare programmes. The role offers the opportunity to work within a mature development environment on cutting-edge defence technology. Key Responsibilities * Develop robust applications using C# .NET within a Windows environment *...
IR35 Status:
Unknown Status

CV-Library LU1, Luton, Bedfordshire Contractor
CL
Feb 11, 2026  
Embedded Software - V&V Engineer
Location: Bristol OR Stevenage (fully onsite) Duration: 6 month initial contract Rate:: £70ph UMB (Inside IR35) Role deetails: Our client, a prominent organisation within the Defence & Security sector, is seeking Embedded Software V&V (Verification & Validation) Engineers to join their teams in Bristol and Stevenage. This is an exceptional contract opportunity to work on the forefront of technology and contribute significantly to the UK's defence capabilities. Key Responsibilities: Undertake verification and validation activities on real-time system application software for the next generation of Missile Systems. Develop requirements into robust test cases, prepare and execute tests, capture data, and deliver actionable feedback to project teams. Utilise strong practical problem-solving skills and data acquisition expertise. Adapt to various tasks and responsibilities within the lab environment on electromechanical products running embedded software. Job...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Feb 06, 2026  
Embedded Software V&V Engineer
World Class Defence Organisation is currently looking to recruit 5x Embedded Software V&V Engineer subcontractors on an initial 6 month contract.  Skills in C, C++ or ADA are beneficial.  A defence or aerospace industry background would also be great.   Rate: £70.00 per hour Location: Stevenage or Bristol, depending on your preference. Hybrid / Remote working: Full time on site (occasional work from home day) (The company are happy with a 4 day week) 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: 1 stage video interview   Embedded Software V&V Engineer Job Description:   The department create the complex, highly reliable real-time software that powers missile systems and their components, ensuring that they provide the performance and functionality our users require when they...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Feb 06, 2026  
Embedded Software V&V Engineer
World Class Defence Organisation is currently looking to recruit 5x Embedded Software V&V Engineer subcontractors on an initial 6 month contract.  Skills in C, C++ or ADA are beneficial.  A defence or aerospace industry background would also be great.   Rate: £70.00 per hour Location: Stevenage or Bristol, depending on your preference. Hybrid / Remote working: Full time on site (occasional work from home day) (The company are happy with a 4 day week) 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: 1 stage video interview   Embedded Software V&V Engineer Job Description:   The department create the complex, highly reliable real-time software that powers missile systems and their components, ensuring that they provide the performance and functionality our users require when they...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Feb 14, 2026  
Senior Process Engineer (Software & System Test)
Our OEM Client based in Gaydon, is searching for a Senior Process Engineer (Software & System Test) to join their team on an Inside IR35 contract. Umbrella Pay Rate: £33.64 per hour. Duties: This role (Software and Systems Testing Process) is focused on ensuring the New Vehicle Programs Systems and Software Testing is occurring with the correct amount of pace. This is done through ensuring high-quality software integration by driving process adherence, KPI tracking and continuous improvement. They oversee testing activities, monitor performance against targets through measurement dashboards and optimise workflows to reduce risks and defects. Acting as a key link between development teams and reporting out the overall status, they promote best practices and deliver reliable, compliant solutions. Skills Required: Strong knowledge of process management and continuous improvement frameworks. Proficiency in KPI tracking and reporting tools (e.g., JIRA, Tableau). Experience in...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Feb 14, 2026  
Software and Systems Test Engineer
Software and Systems Test Engineer - (phone number removed) - £33.98/hr umbrella rate (Inside IR35) Are you ready to elevate your career and make a tangible impact in the automotive industry? This is your chance to join a forward-thinking company as a Software and Systems Test Engineer. This role offers the perfect blend of innovation, collaboration, and career development, allowing you to work on cutting-edge vehicle engineering projects that shape the future of mobility. If you are passionate about delivering high-quality systems and software testing, this opportunity is your gateway to success. What You Will Do:  - Ensure new vehicle programme systems and software testing are carried out with efficiency and precision. - Drive process adherence and continuous improvement to optimise workflows and minimise risks and defects. - Monitor performance against targets using KPI tracking tools such as JIRA and Tableau. - Oversee testing activities and report overall status to...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwick CV35, UK Contractor
CL
Feb 13, 2026  
Machine Learning Engineer
Apex Resources limited are on the lookout for a Machine Learning Engineer (Agentic AI) in Glasgow for a hybrid role. A leading Glasgow-based AI firm is building next-generation agentic AI products that automate complex tax and finance workflows for UK accountancy firms and in-house finance teams. The platform leverages large language models and intelligent orchestration to remove repetitive work and free specialists to focus on higher-value advice. The role You will join a small, high-calibre engineering team as an AI Developer, working on the core agentic AI platform for tax and finance automation. Day-to-day, you will design, build and ship production-grade features across the AI orchestration, reasoning and integration layers. Typical work includes: * Designing and implementing agentic AI workflows that coordinate LLMs, tools and reasoning engines to handle end-to-end finance and tax processes. * Building robust back-end services and APIs to support document ingestion, data...
IR35 Status:
Unknown Status

CV-Library Glasgow, Glasgow City Contractor
  • Follow us on:
  • Facebook
  • Twitter
  • Instagram
  • LinkedIn
  • Home
  • Contact
  • About Us
  • Terms & Conditions
  • Employer
  • Post a Job
  • Search Resumes
  • Sign in
  • Job Seeker
  • Find Jobs
  • Outside IR35
  • Create Resume
  • Sign in
© 2008-2026 Powered by SmartJobBoard Job Board Software