53 principal engineer jobs found

Principal Product Security Engineer 12 Month Contract (Hybrid, 2-3 days per week on site) - Frimley, Barrow or Weymouth Based £85.40 an hour Umbrella Inside IR35 This is a great opportunity to work within one of the UKs leading Defence companies based in Frimley. Hybrid, 2-3 days per week on site. Knowledge, Skills and Qualifications Knowledge: * The PSA Principal Engineer will have a good understanding of the applicable regulations, standards, policies and guidance on information risk management, to be able to identify, analyse and evaluate information risks. * They will be able to document and present risk management options to the business and participate in discussions. * Good understanding of information security principles and is able to advise on the potential impact to Product Systems. * Knowledge of security related activities required to support the engineering lifecycle with experience of operating in the phase relevant to the role. * The PSA Principal...

Principal CE&I Protection Engineer - Hybrid (Sellafield Project) Location: Warrington - 1 day per week on-site, 4 days WFH (with occasional site visits) £56-61/hour Inside IR35 Project: Sellafield Electrical Distribution Network Upgrade - Infrastructure Strategic Alliance The Opportunity: Join the CE&I design team delivering power systems and protection engineering for a high-profile Sellafield project. You'll play a key role in shaping the Electrical Distribution Network Upgrade through cutting-edge modelling, fault analysis, and protection system design. Key Responsibilities: Develop and maintain the project's working ETAP model Produce and review fault calculations Support protection and control system design for 11kV & 400V networks Collaborate with multidisciplinary teams to deliver high-quality designs Essential Experience: Strong knowledge of BS EN 60909 Fault Calculations Skilled in power distribution modelling software Hands-on experience with...

Principal Temporary Works Engineer Contract: Long-term Location: Remote with required site/office visits Rate: Competitive Scope: Outside IR35 Overview Our client is a leading UK infrastructure delivery specialist, supporting major national programmes across transportation, energy, water, defence, and complex engineering environments. They are recognised for delivering high-integrity design and construction solutions on some of the country’s most critical and technically demanding projects. With a strong focus on safety, innovation, and sustainable delivery, they work in partnership with government and industry to modernise and maintain essential infrastructure. We are seeking a Principal Temporary Works Engineer to join a specialist design team on a long-term contract. You will lead temporary works engineering activities across a range of complex projects, ensuring safe, compliant, and efficient design solutions. This role requires strong technical leadership, design assurance...

Our client, an international leader in engineering and consulting, is seeking a Senior/Principal HV Design Engineer to join their dynamic team in London. This is a contract position within the rail, public transport, and built environment sectors. This opportunity is ideal for an ambitious engineer with strong leadership capabilities and excellent interpersonal skills, aiming to contribute to a high-performance team. Key Responsibilities: Develop HV systems, including concept and detailed designs, design reviews, estimations, and provide site supervision/support as needed. Provide technical support on all aspects of HV system engineering and design. Prepare technical specifications for plant and equipment, power systems, cable routing, tender packages, and progress reports. Ensure accurate coordination with other engineering disciplines involved in projects. Attend and conduct internal/external meetings with colleagues, clients, and subcontractors. Perform technical calculations...

We are seeking an experienced Principal EC&I Engineer to support the delivery of complex safety‑related projects within a highly regulated environment. This role is ideally suited to an engineer with a strong background in Control, Electrical & Instrumentation (CE&I) and Functional Safety, particularly within the nuclear industry. You will play a key role in the delivery of CE&I Safety System design, working closely with the safety case team and technical leads to ensure compliance with relevant standards and lifecycle processes. Job Title: Principal EC&I Engineer Contract: 12‑month contract (Inside IR35) Location: Hybrid / UK Clearance: Must be eligible for SC clearance Industry: Highly regulated sector - nuclear experience strongly preferred Key Responsibilities Lead and deliver CE&I safety system design packages across complex, safety‑critical projects. Provide technical governance and oversight on functional safety matters. Ensure alignment with...

Principal Civil/Structural Engineer - Manchester or Aberdeen (Hybrid Working) We are seeking an experienced Chartered Civil or Structural Engineer to join our growing team, contributing to the delivery of complex and high‑profile projects across the Natural Resources, Nuclear, Defence, Water, Energy, Oil & Gas and Petrochemical sectors. Working as part of a collaborative engineering team-but often independently with minimal supervision-you will play a key role in producing high‑quality civil and structural deliverables. This includes analysis models, calculations, design inputs, sketches and technical documentation for a diverse portfolio of projects. Key Responsibilities Producing civil and structural engineering deliverables to a high technical standard Providing technical guidance and ensuring quality control of outputs Ensuring compliance with relevant processes, procedures and UK regulations Working closely with construction teams to support buildability and safe...

Principal Cloud Platform Engineer - Contract Location: Hybrid (60% office / 40% remote) Rate: £580 - £618 per day - Inside IR35 Engagement: PAYE via Umbrella Company only Role Overview We are seeking an experienced Principal Cloud Platform Engineer to help shape the future of our cloud security and automation capabilities. You will play a key role in expanding our cloud product roadmap, automating remediation and escalation processes, and strengthening our security posture across enterprise platforms. Working closely with engineering, security, and DevOps teams, you will apply modern cloud-native and CI/CD practices to solve real-world business challenges across multiple technology domains. Key Responsibilities Drive cloud infrastructure enhancements aligned to strategic and budgetary objectives. Collaborate with engineering teams on the design, build, and delivery of scalable cloud services. Enable stakeholders to adopt modern cloud-native architectures and best...

Chartered Structural Design Engineer (Contract – Outside IR35) Location: Aberdeen Engagement: Limited Company Contractor Duration: Minimum 12 months Sector: Refining, Chemical Manufacturing & Pipeline Assets Overview Burnside Recruitment is seeking an experienced Chartered Structural Design Engineer to support a long-term programme of modifications and upgrades across major onshore refinery, chemical manufacturing, and pipeline infrastructure. This is a 12‑month+ contract, operating outside IR35, and ideally suited to a limited company contractor. Key Responsibilities • Lead structural design and assessment activities for brownfield heavy civils projects within complex process plant environments. • Deliver structural calculations, reports, design packages, and technical documentation to UK regulatory and industry standards. • Provide technical oversight on modifications, upgrades, and integrity improvements • Interface with multidiscipline engineering teams, site personnel, and...

Role: Prinicipal Structural Engineer Location: Gosport-onsite Duration: 6 months Rate: £600-£700/day Inside IR35: Umbrella About our Client: Our client is a leading company in defense and aerospace technology, specializing in cutting-edge research, testing, and innovation across multiple sectors. They are known for their state-of-the-art facilities and highly skilled workforce, making them a key player in advancing technology and delivering high-quality solutions. The Role As a Principal Maritime Structural Engineer, you'll be responsible for delivering work streams whilst guiding a mixed discipline engineering team. Ultimately enabling the engineering delivery of a large multi-year high profile maritime project within the Maritime defence sector. Day-to-day, you will use Finite Element Analysis (FEA) to model and assess the structural response of submarine propulsors under quasi-static and dynamic conditions. Responsibilities include developing and reviewing FEA models,...

Senior/Principal EC&I Engineer Location: Plymouth (Hybrid) Contract Length: 12 months Rate: £500 Per Day Inside IR35 Site expectations: 3x a week, on-site We are seeking a Senior/Principal EC&I (Electrical, Control & Instrumentation) Engineer to join our Major Infrastructure Projects Business Unit, based in Plymouth. This role will primarily focus on managing and ensuring the delivery of site quality through the installation and commissioning of electrical activities at the submarine refit complex. The successful candidate will be responsible for providing technical support, managing inspections, and ensuring that contractors adhere to project specifications and timelines. Key Responsibilities: Ensure the effective delivery of site quality by managing and supporting the installation and commissioning processes for electrical works in the submarine refit complex. Provide expert advice to the construction and project teams, communicating effectively with contractors and...

About the Opportunity: NRL is recruiting for a Principal Telecommunications Design Engineer to support a major client across the UK.   Joining a well-established and growing multidisciplinary team, you will play a key role in delivering integrated building services solutions across a diverse portfolio of projects. This is an opportunity to contribute at a senior level within an expanding framework, helping shape high-quality, future-ready ICT and telecommunications infrastructure within complex built environments.   Working alongside engineers, architects, project managers and specialist consultants, you’ll provide technical leadership across the full project lifecycle — from early feasibility through to construction handover — ensuring solutions are coordinated, commercially balanced and aligned with client objectives.   Hybrid working arrangements are available across Birmingham, London, Manchester and Bristol.   What You’ll Be Doing: As a Principal Telecommunications...

Principal High-Speed Digital Hardware Engineer Certain Advantage is hiring for a Principal Digital Hardware Engineer based in the Edinburgh area. This role is on a contract basis and is hybrid-based. The Company We’re working with an engineering company specialising in solving complex engineering challenges across various industries—from aerospace and automotive to healthcare and semiconductors. 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 Principal Digital Hardware Engineer—someone ambitious and ready to make an impact. You’ll be results-oriented and driven to succeed. You’ll be leading a small, experienced, and collaborative team, and be responsible for: Creating high-quality and robust digital electronics designs Documenting and recording deliverables Supporting integration & verification activities at the hardware and system level Keeping designs under configuration control Providing...

Principal Operational Highway Engineer Overview: Our client in the North East is seeking an experienced Principal Highways Engineer to lead the operational delivery of highways maintenance and civil engineering services. This position plays a key role in managing day-to-day operational activity, ensuring highway networks are safely maintained, efficiently managed, and delivered to industry best practice. You will oversee maintenance programmes, manage budgets, coordinate inspections, support service improvements, and act as a senior point of contact across technical operations. The role involves close collaboration with internal teams, external partners, and other stakeholders to ensure a consistent, high-quality approach to service delivery. Key Responsibilities: ·Lead the operational delivery of highways and civil engineering maintenance activities. ·Develop, manage, and implement planned and reactive maintenance programmes. ·Oversee budget management across operational...

Our client is looking to appoint a Principal / Senior HV Design Engineer to join their Energy team. The ideal candidate will have strong UK HV design experience, particularly working with 132kV and 400kV systems.   This is an excellent opportunity to work across a diverse portfolio of technically complex projects for clients nationwide. Schemes may include Data Centres, HVDC, interconnectors, wind farms, substations, BESS, geotechnical solutions, protection systems, LVAC, FEED studies, and reconnection works.   This is a 6-month contract outside IR35, requiring attendance at the client's London office 3 days per week.   Key Responsibilities ·Develop HV system designs from concept through to detailed design, including design reviews, cost estimation, site supervision, and technical support as required. ·Provide specialist technical guidance on all aspects of HV engineering and system design. ·Produce plant and equipment technical specifications, cable route and power...

World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Structural Engineer subcontractor on an initial 12 month contract, with very likely extension.  The role will be onsite 4 days per week.     Candidates with a FE / FEA background ( Structural Engineer / Structural Analysis / Stress Engineer ) ideally from the Defence / Aerospace industry would be suitable for this position. Rate: £50.00 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 be onsite 4 days per week.  a 4-Day week of Monday to Thursday is possible. 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   Principal Structural Engineer Job Description: The Mechanical Analysis Group are looking for a Principal...

Principal C&I Engineer (Fire & Gas Systems) – Contract – West Wales / Hybrid Location: West Wales / Hybrid This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy, Hydrogen and Nuclear sectors. Fire and Gas experience at both FEED and detailed design stages is essential. TUV Certified status would be a bonus, though not essential. Our client is based in West Wales and can accommodate a hybrid working pattern. Role & Responsibilities * Leading the design of fire and gas systems, including design specifications, cause and effect diagrams, and system architecture. * Performing safety specification and certification of safety instrumented systems. * Selecting and specifying instruments suitable to ensure compliance with safety regulations. * Designing C&I systems with a specific focus on fire and gas detection and suppression systems....

Description (Remote Working) A specialist independent building services consultancy, has, due to planned expansion and a full workload, an immediate requirement for a Principal Electrical Design Engineer for a 3 - 6 month contract in the West Midlands. They work in a wide variety of project sectors including, commercial, residential, educational and industrial work. As an Electrical Design Engineer you would be expected to provide effective designs, prepare feasibility reports, specifications, provide site supervision and management of electrical services installations, following health and safety, QA and environmental policies and procedures. Your should be qualified to a minimum of HND level and have a minimum of 10 years' UK building services design experience. You should have a demonstrable UK building services background. Your responsibilities would include: * Design calculations using industry leading software (i.e. Hevacomp). * Assisting in preparing reports such as...

Senior / Principal FPGA Engineer Edinburgh, Luton, Bristol, Southampton (Hybrid, 2 days from home) circa £88 per hour + overtime Contract position Virtual interview Mon–Fri   Certain Advantage is collaborating with a key client to recruit Senior / Principal FPGA Engineers who will be responsible for the design and development of FPGA designs using VHDL and verifying designs using VHDL or System Verilog.   What will you be doing? Creating innovative and robust VHDL-based designs Documenting and recording deliverables Verifying FPGA designs Ensuring configuration management/keeping designs under revision control Providing progress reports  A couple of things you should know: At least 5 years’ experience of developing FPGA using VHDL or Verilog Experienced with Mentor Graphics FPGA development tools including HDL Designer, ModelSim / Questa and Precision Familiar with Xilinx / Intel (Altera) / Microsemi (Actel) design flows (ISE, Vivado, Quartus) and third-party synthesis...

World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Thermal Engineer Subcontractor on an initial 12 month contract.   Hourly Rate: £50.00  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 3 days per week. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage onsite interview   Principal Thermal Engineer Job Description: The Mechanical Analysis Group are looking for a Principal Thermal Engineer to join its team in Stevenage. The group consists of over 30 engineers working across a wide spectrum of cutting-edge military systems. Working for an internationally recognised company, you will play a critical role in ensuring that products deliver the necessary performance against key...

Principal Digital Hardware Engineer Certain Advantage is hiring for a Principal Digital Hardware Engineer based in the Edinburgh area. This role is on a contract basis and is hybrid-based. The Company We’re working with an engineering company specialising in solving complex engineering challenges across various industries—from aerospace and automotive to healthcare and semiconductors. 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 Principal Digital Hardware Engineer—someone ambitious and ready to make an impact. You’ll be results-oriented and driven to succeed. You’ll be leading a small, experienced, and collaborative team, and be responsible for: Creating high-quality and robust digital electronics designs Documenting and recording deliverables Supporting integration & verification activities at the hardware and system level Keeping designs under configuration control Providing progress...