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Inside IR35 Contractor systems engineer

94 systems engineer jobs found

CL
Apr 16, 2026  
Satellite AIT Electrical Systems Engineer
Electrical Systems Test Engineer - Satellite AIT An opportunity to shape the performance and reliability of next‑generation spacecraft Location: Onsite (UK Eyes Only) Clearance: SC Clearance Required Rate: £55.00 per hour (Umbrella, Inside IR35) Hours: 37 per week Role Overview This role places the Electrical Test Engineer at the centre of satellite Assembly, Integration & Test (AIT). The engineer will design, develop, and execute complex electrical and functional test sequences that ensure spacecraft are fully prepared for the challenges of launch and the space environment. They will work hands‑on with flight hardware, support live test operations, investigate anomalies, and contribute to the technical reviews that determine spacecraft readiness. This position is ideal for someone who thrives on precision, problem‑solving, and the excitement of seeing their work contribute directly to a mission in orbit. Reports to: Satellite AIT Electrical Test Engineering Manager...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Apr 12, 2026  
IT Systems Engineer Lead
IT Systems Engineering Lead - Major Energy/Petrochemical Project Location: Reading, UK (On‑Site) Hours: 37.5 per week Contract Length: 12 Months, start date ASAP Pay Rate Banding: PAYE - £43-17ph - £58.46ph / Umbrella - £56.91ph - £75.31ph IR35:Inside of IR35 About the Opportunity Our Client is delivering a large‑scale petrochemical and refinery upgrade programme aimed at modernising existing assets, integrating new world‑scale facilities, and significantly reducing greenhouse gas emissions. As part of this major long‑term project, they are seeking an experienced IT Systems Engineering Lead to join their Project Management Team based in Reading. This is a senior technical leadership role, supporting the pre‑FEED and FEED phases of a complex integrated refinery and petrochemicals development. You will represent Our Client in guiding contractors, shaping engineering standards, driving IT/OT system integration, and ensuring robust, secure, and cost‑effective digital...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Apr 11, 2026  
Systems Engineer
We're looking for talented Systems Engineers to support a major defence engineering programme focused on complex, software intensive systems and advanced platform integration. If you thrive in high integrity environments and enjoy solving multi-faceted technical challenges, this contract offers a compelling opportunity. Location Ampthill, Bedfordshire On-site presence required Mondays and Tuesdays Contract Details Duration: 12 months Hours: 37.5 per week Working Pattern: 4?day week (Mon-Thurs) with flexible arrangements Rate: Competitive per hour (Inside IR35) Clearance: BPSS to start; SC required later Eligibility: Sole UK nationals only (due to programme requirements) Role Overview You'll join a growing engineering function supporting multiple business areas, including platform systems and special projects. These roles are driven by increased demand across complex system integration activities, including work on next generation turreted systems and other mission critical...
IR35 Status:
Inside IR35

CV-Library Ampthill, Bedfordshire Contractor
CL
Apr 09, 2026  
Electronic Systems Engineer
Senior) Electronic Systems Engineer Location: St Asaph, UK Length: 6 months (possibility for permanent employment after the contract) Security Clearance: SC (or ability to obtain) IR35: Inside IR35 Purpose of Role The (Senior) Electronic Systems Engineer will design, integrate, and validate vehicle-mounted electro-optical systems used in for defence applications. Main Responsibilities - Define system architecture (block diagrams, interfaces, power distribution) - Translate requirements into system specifications and documentation (e.g. ICDs) - Integrate vehicle power systems - Design and integrate video systems (thermal/daylight cameras, display pipelines) - Integrate data buses (CAN, MIL-STD-1553, Ethernet, RS-422/485) - Support system integration, testing, and validation (bench, vehicle, field) - Ensure compliance with EMC and environmental standards (e.g. MIL-STD-461, MIL-STD-810) - Support design reviews, risk management, and issue resolution across the...
IR35 Status:
Inside IR35

CV-Library St Asaph, Denbighshire Contractor
CL
Jan 22, 2026  
Systems Engineer
World Class Defence Organisation based in Stevenage and Bristol is currently looking to recruit a Systems Engineer subcontractor on an initial 6 month contract.  The department are looking for Systems Engineers ideally from the defence / aerospace background.  Previous experience of DOORS is required. 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: Bristol or Stevenage (depending on your preference) Hybrid / Remote working: The role will likely be onsite 2-3 days per week (this could reduce once up to speed in the role). 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   Airborne Launcher Functional Systems Engineer Job Description: Analyse high level design documentation to elaborate and capture...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Apr 16, 2026  
Systems Qualification Engineer
Systems Qualification Engineer 2-3 days on site £72.54 per hour (inside IR35) Defence 12 months As a Qualification Systems Engineer you will report to the Lead Hardware Systems Engineer and Project Design Authority as applicable. Your responsibilities will include estimation of development activities, design of technical solutions, implementation of proposed solutions and the testing involved in verifying them. You will also be required to help in diagnosing with reported issues. This role will require the need to travel to test house. As part of the development team you will be expected to work closely with your team members, as well as providing support to other teams such as business winning, development, test, and support teams. You will support the design, qualification and implementation of our deliveries at the operational level. In other words, not only will you be responsible for ensuring the components comprising our systems meet their requirements but you will be...
IR35 Status:
Inside IR35

CV-Library Christchurch, Dorset Contractor
CL
Apr 15, 2026  
Systems Safety Engineer
Location: Brighton (4-5 days per week onsite) Duration: 6 month contract Inside IR35 Role details: Our client, a prominent player in the Defence & Security and Aerospace sectors, is currently seeking a Systems Safety Engineer to join their team in Brighton. You will be required to work onsite 4 days per week, with an initial period of 5 days per week for the first 4 weeks. Core Responsibilities: Support the development and management of system requirements, ensuring traceability from customer needs through to verification. Support the development of system safety artefacts in accordance with aerospace and defence standards. Assist in defining system architecture and interfaces across mechanical, electrical, and software elements. Participate in design reviews including SRR, PDR, CDR, and test readiness reviews. Support the development of system safety artefacts in accordance with aerospace and defence standards. Assist in performing hazard identification and analysis...
IR35 Status:
Inside IR35

CV-Library Brighton, East Sussex Contractor
CL
Apr 12, 2026  
Manual Test Engineer (LAN Network & File Systems)
Job Title: Manual Test Engineer (LAN Network & File Systems) Location: Wokingham (2 roles) & Warwick (1 role) – Office-based Contract Type: Contract (6 months) Day Rate: £415 per day (Inside IR35) The Opportunity We are looking for experienced Manual Test Engineers with strong expertise in LAN network testing and file systems, including Encrypted File System (EFS) and mounting. This role sits within a large enterprise environment where you will be responsible for ensuring secure, reliable, and high-performing network and file system operations. You will work closely with infrastructure, security, and end-user computing teams. Key Responsibilities LAN Network Testing * Perform end-to-end LAN testing, including VLANs, IP addressing, DHCP, DNS, routing, and ACLs * Validate QoS, firewall rules, and application connectivity * Test redundancy and failover scenarios such as LAG, spanning tree, and high availability * Measure and analyse network performance including...
IR35 Status:
Inside IR35

CV-Library RG41, Winnersh, Wokingham Contractor
CL
Apr 16, 2026  
Electrical Design Engineer
Electrical Design Engineer Farnborough, UK (Hybrid) Inside IR35 6 Month Contract __________________________________________________________________________________ Job Purpose Belcan are currently working with one of the leading clients in the aerospace industry, who manufactures, operates, and delivers services with its solar-powered, stratospheric platform. We are supporting them with their search for an Electrical Design Engineer, you will contribute to the design, development, and delivery of electrical products across multiple programmes. Working within a multidisciplinary engineering team, you will help generate and maintain the digital design record, collaborating closely with both internal teams and external manufacturing and installation partners. This is a dynamic role in a growing organisation, offering exposure to evolving programmes and complex, rewarding design challenges. Key Responsibilities *Support Avionics and Systems Engineering teams in developing...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
CL
Apr 16, 2026  
Electrical Design Engineer
I am looking for an Electrical Design Engineer to join my fantastic aerospace client based in Farnborough on a 6-month contract. As an Electrical Design Engineer, you will contribute to the design, development, and delivery of electrical products across multiple Zephyr programme. You will help generate and maintain the digital design record, collaborating closely with both internal teams and external manufacturing and installation partners. Role: Electrical Design Engineer Pay £27.82 per hour via umbrella Contract: 37 Hours a week, Inside IR35 Location: Farnborough Security Clearance: BPSS Main activities of role: - Support Avionics and Systems Engineering teams in developing and maintaining the production design record for new concepts and design changes. Produce detailed electrical design solutions using SolidWorks Electrical. Select appropriate electrical components to satisfy schematic and system level requirements. Act as a key contact for electrical design queries...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
CL
Apr 16, 2026  
Electrical Design Engineer
Electrical Design Engineer 6 month contract Based in Farnborough Offering £27.82ph Inside IR35 Do you have experience using SolidWorks Electrical toolset? Do you have experience in the Aviation industry? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Electrical Design Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Support Avionics and Systems Engineering teams in developing and maintaining the production design record for new concepts and design changes Produce detailed electrical design solutions using SolidWorks Electrical Select appropriate electrical components to satisfy schematic and system-level requirements Act as a key contact...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
CL
Apr 16, 2026  
Integration Engineer
Integration Engineer Initial 12 Month Contract Full time on site Christchurch, Dorset £72.54 Per Hour (Umbrella Rate - Inside IR35) The Role Producing high-and low-level designs to meet challenging networking requirements Building and configuring technical solutions involving radios and networked hardware and software Integration of Commercial of the Shelf hardware and software Adherence to systems engineering practices Fault finding and resolution of issues in a development environment to a successful conclusion Producing clear and concise technical documentation Reporting on progress and providing feedback to team members and leadership Testing and verification to prove a set of requirements Experimentation of new and novel solutions The Candidate Essential: Installation and configuration of Layer 2 switched networks and Layer 3 routed networks Technical documentation production Functional domain knowledge of routing protocols e.g. OSPF, EIGRP, and RIPDesirable:...
IR35 Status:
Inside IR35

CV-Library Christchurch, Dorset Contractor
CL
Apr 10, 2026  
Senior Manager
Senior Manager, Software Engineering Location: Farnborough (On‑Site) Industry: Aerospace / High‑Altitude Platforms / Safety‑Critical Systems Contract: 6 Month inside IR35 Rate: £52ph Lead the software engineering function behind next‑generation, high‑altitude aerospace technology. I'm recruiting on behalf of an innovative aerospace organisation developing world‑leading, solar‑powered, high‑altitude platforms designed for ultra‑long‑endurance flight. Operating above 60,000 ft, these platforms enable mission‑critical applications including direct‑to‑device connectivity, high‑resolution Earth observation, environmental monitoring and global‑scale humanitarian operations. This is a rare opportunity to step into a high‑impact leadership position within a rapidly growing and genuinely pioneering engineering environment. The Role: Senior Manager, Software Engineering As the Senior Manager for Software Engineering, you will lead an expanding team responsible for the full software...
IR35 Status:
Inside IR35

CV-Library Farnborough, Hampshire Contractor
CL
Apr 12, 2026  
System Safety Engineer
Are you a System Safety professional with strong rail experience? Do you thrive in technically complex, safety-critical environments? Rate: £580 to £620 per day (Inside IR35) Contract length: Initial 12 months, with likely extensions Location: London (hybrid - 3 days per week in the office) This role sits within the Systems and Integration function of a major rail infrastructure programme. You will be responsible for leading and coordinating system safety activities across multiple disciplines and lifecycle stages. You will work closely with technical leads, stakeholders and independent assessors to ensure safety compliance and robust hazard management throughout the programme. Essential Requirements ·Proven experience in rail system safety roles ·Strong working knowledge of CSM-RA and its application ·Experience chairing HAZIDs, HAZOPs and hazard review meetings ·Ability to develop and maintain Hazard Records and system safety deliverables ·Experience managing safety...
IR35 Status:
Inside IR35

CV-Library Greater London, UK Contractor
CL
Apr 16, 2026  
Maintenance Engineer
Janauary 2026 Starts Maintenance Engineer - Electrical / Mechanical / Multi Skilled Location: West Midlands Shifts available: - Days - Double Days - 3 Shift Rotation - 4 Shift Rotation Contract: 6 Months Temp-to-Perm ------These roles are inside IR35------ The Role: We are looking to recruit several Multi-Skilled / Electrical or Mechanical Maintenance Engineers from a conveyor, automated, or fast-paced environment and you will be responsible for ensuring that all production and ancillary machinery, equipment, and power systems operate at maximum efficiency. You must have good electrical or mechanical skills and have prior experience working within a production maintenance capacity. Key Performance Indicators - Equipment reliability and performance - Plant Maintenance (TPM & PPM) Qualifications and Experience - Ideally you will have xxperience with automotive machinery maintenance and fault diagnoses - Mechanical / Electrical / Pneumatics experience - Indentured...
IR35 Status:
Inside IR35

CV-Library Birmingham, West Midlands Contractor
CL
Apr 16, 2026  
Embedded Software Engineer - SC Cleared
Embedded Software Engineer - SC Cleared £700 - £740 a day IR35: Inside IR35 Location: Southampton Working pattern: Two days a week on site + Clearance: Active SC Clearance required You will join a defence technology consultancy developing systems for the MoD Essential: Software development in C/C++ on embedded microcontroller devices. Either bare metal or RTOS Hardware interfaces & drivers, e.g. SPI, GPIO, Serial, ADC, PWM Debugging on embedded platforms, familiarity with basic test gear, oscilloscopes, etc. gitlab Desirable: CMake Unit test frameworks - e.g. google test Real time operating systems
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
Apr 16, 2026  
SAS Platform Environment & Configuration Engineer
Job title: SAS Platform Environment & Configuration Engineer Rate: £515 per day inside ir35 Duration: 6 months START DATE: 01/06 Location: Telford with 2 days/week in office Candidates must be willing and eligible to go through SC security clearance for this role Role Overview: Join a high-impact programme consolidating critical services into a single, centralised data platform-reducing complexity, driving efficiency, and supporting future scalability across the business. You'll play a key role within the Minerva Platform release team, helping scale capability to support a major transformation initiative involving SAS Viya, cloud migration, and modern platform engineering practices. Work on a large-scale platform consolidation project with real business impact Hands-on with SAS Viya 4, Kubernetes, and cloud-native environments Blend of platform engineering, DevOps, and environment ownership Join a growing team with increased investment and long-term...
IR35 Status:
Inside IR35

CV-Library Telford, Shropshire Contractor
CL
Apr 16, 2026  
Manufacturing Engineer - New Model Launch
Manufacturing Engineer – New Model Launch Are you ready to play a pivotal role in the launch of a groundbreaking supercar? ASL Technical is recruiting Manufacturing Engineers to join a leading high-performance automotive manufacturer during an exciting new model introduction. This is your chance to shape the future of automotive excellence and be at the forefront of cutting-edge vehicle production. About the Role As a Manufacturing Engineer, you’ll be integral to turning concept designs into reality. From prototype stages through to series production, your expertise will drive the processes, standards, and innovations that define how a world-class supercar is built. You’ll work across multiple projects, collaborating closely with concept design and engineering teams, gaining exposure to all aspects of the business and influencing projects from start to finish. Variety, challenge, and innovation are at the heart of this role. Key Responsibilities Lead the creation and...
IR35 Status:
Inside IR35

CV-Library Woking, UK Contractor
CL
Apr 16, 2026  
SRE - Site Reliability Engineer
Senior Site Reliability Engineer (Observability) Location: London/UK (Remote) Contract: 12 Months Initial Day rate : £55 Per Hour - £62 Per Hour Inside IR35 Job Overview We are looking for a Senior Site Reliability Engineer with strong experience in Observability, Monitoring and Distributed Systems to support large-scale cloud infrastructure supporting millions of devices globally. The role focuses on building and scaling monitoring, logging and alerting platforms to ensure high availability and performance of cloud services. Responsibilities Design, deploy and scale observability platforms Manage and scale Prometheus monitoring systems Deploy and maintain large Elasticsearch clusters Build and maintain data pipelines using Kafka Develop alerting and monitoring frameworks Automate infrastructure using Terraform and Ansible Develop tools and scripts using Python, Go, Ruby or Bash Work with Linux systems (Debian/Ubuntu) Participate in on-call rotation Improve system...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 16, 2026  
AIT) Electrical Test Operations Engineer
AIT Electrical Test Operations Engineer Location: Oxford (Onsite, UK Eyes Only) Clearance: SC Required Rate: £37.00/hr (Umbrella, Inside IR35) Hours: 37 per week Shift Pattern: Up to 24/7 rotation, including weekends Initial Base: Stevenage, transitioning to RAL NSTF, Oxfordshire in March 2026 Role Overview The AIT Electrical Test Operations Engineer plays a key role in the preparation, execution, and analysis of electrical and functional testing for spacecraft and engineering test benches. Operating within a cleanroom environment, the engineer ensures that spacecraft systems meet stringent performance and safety standards ahead of environmental testing and launch campaigns. Key Responsibilities Core Activities Executes electrical and functional test procedures on engineering test benches and flight spacecraft. Utilises the Central Checkout System (CCS), Electrical Ground Support Equipment (EGSE), and Spacecraft Check-Out Equipment (SCOE). Validates electrical test aids,...
IR35 Status:
Inside IR35

CV-Library Oxford, Oxfordshire Contractor
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