16 principal mechanical engineer jobs found

Delivering safe, reliable, and high-integrity solutions for complex nuclear and mechanical systems across regulated environments. The Principal Mechanical Engineer leads the delivery of engineering and technical activities, applying mechanical engineering principles, domain knowledge, and experience. They resolve complex technical issues, ensure compliance with specifications, and support stakeholder requirements while mentoring others and working independently or within small teams. Key Responsibilities • Lead and manage multi-disciplinary teams delivering mechanical engineering work within scope, time, and quality requirements. • Provide technical oversight and approval of engineering outputs (calculations, analyses, reports, specifications, and method statements). • Ensure compliance with relevant codes, standards, and health, safety, and environmental requirements. • Act as a subject matter expert in mechanical systems, solving complex technical problems and supporting...

Great opportunity to work as a Senior / Principal Project Engineer for a fast growing Renewable Energy Company who are building new long duration energy storage facilities in the UK.  The Role: The Senior Project Engineer (Multi-Discipline) will play a key role in the delivery of a project currently being executed near Manchester - a 300 MWh capacity Energy Storage Facility, with a strong focus on the execution phase of the project, including engineering, procurement, construction and commissioning. You will be very familiar with design requirements for hazardous process plant, having previous experience in either the petrochemical, gas processing, chemicals, or oil and gas industries. Power generation experience is also relevant. You will be responsible for coordinating across multiple disciplines (mechanical, electrical, civil, and instrumentation & controls) to ensure safe, efficient, and timely project delivery. Acting as a key interface between engineering,...

A contract position Outside IR35 4 days pw on site in West Sussex Capable of getting Basic Security check Our client, a respected entity in the automotive sector, is currently seeking a Principal Design Engineer with proven Vehicle Design and Powertrain Integration experience. Key Responsibilities: Concept and definitive 3D mechanical design of systems, system assemblies, and complex components such as the integration of powertrain, steering, braking and auxiliary systems into a vehicle Leading Design Deliverables Detailed mechanical design work including basic stress calculations, FMEA's, 2D detailing, 2D layouts, and tolerance stacks as required Close cooperation with FEA and Simulation teams to ensure products meet design validation requirements Close cooperation with manufacturing and process engineers to ensure products meet DFMA requirements Management of Bill of Materials Creation of technical reports and documentation as required for engineering projects Liaison with...

Job Specification: Electrical Design Engineer (Senior - Lead) Business Unit: Data Centre Design Consultancy (Client Side) Location: Remote Reporting to: Associate Director/Director Overview We are seeking highly skilled Senior and Lead Electrical Design Engineers to join our specialist data centre design consultancy team. These roles will be responsible for driving the design, coordination, and delivery of complex electrical systems for hyperscale, colocation, and enterprise data centre environments. You will work directly with clients, end users, and multidisciplinary engineering teams to develop high‑quality, technically robust designs from concept through to construction. Core Responsibilities (All Levels) Lead and produce electrical designs for data centre infrastructure including: HV and LV power distribution UPS systems (static and rotary) Standby generation Earthing and bonding Lighting and small power Busbar distribution systems Develop design documentation:...

Our Pharma client is looking for an engineer to join them for a 6-8 month FTC. ideally you would come from a manuvfacturing environment, pharma, food, aerospace, any industry highly regulated, and you would need both mechanical and electrical experience, the site has a steam system, both plant steam and pur steam, as well as purified water systems. This role is 6-8 months and salary quoted is pro rata, there would also be a completion bonus of 10% when the role is finished. You would be responsible for providing ‘hands on’ engineering support to both the Facilities and Manufacturing functions whilst adhering to the site EHS and Pharmaceutical Quality procedures. Principal Responsibilities Routine preventative maintenance requirements for production and facility. Routine instrumentation across the facility. Supporting where required specialised contractors carrying out routine and re-active maintenance tasks. Troubleshooting faults and failures in processing equipment...

C&I Lead / Principal Engineer Location: Glasgow – 3 days per week in office / 2 days from home Rate: £55–£60 per hour (PAYE) + Holiday Pay Hours: 40 hours per week Contract Duration: 12 Months + Sector: Onshore Oil & Gas (Gas Transmission) Overview We are currently recruiting for a C&I Lead / Principal Engineer to support a major project within the onshore oil & gas / gas transmission sector. This position will act as the functional Lead Engineer, responsible for delivering the Control & Instrumentation scope across both FEED and Detailed Design phases. You will lead a team of engineers and designers across the UK and globally, ensuring high-quality, compliant, and timely delivery of all C&I engineering activities. Key Responsibilities Act as the C&I Lead Engineer on a major onshore oil & gas project Lead and coordinate UK and global engineering teams to deliver project scope Manage delivery of C&I engineering activities across FEED...

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...

My client is seeking an experienced Senior Circuit Engineer to join their Engineering Design team within the Capital Programme and Procurement function. This is a key technical role responsible for delivering high-quality circuit designs and associated costings across OHL and diversion projects, typically operating at 132kV, 33kV and 11kV. You'll take ownership of designs from initial scope through to construction readiness, working closely with Project Managers, Electrical, OHL and Civil Designers, contractors and consultants. The role also includes acting as Principal Designer on allocated schemes and ensuring full compliance with CDM regulations, design standards and assurance processes. This position suits a technically strong circuit engineer who enjoys responsibility, mentoring others, and playing a central role in regulated network connection and customer schemes (both contestable and non-contestable). Key Responsibilities Produce below-ground and overhead circuit...

Our premium brand Automotive Tier 1 is currently recruiting for the following role: Discrete Event Simulation Lead Engineer - £35-£40 /hr (Inside IR35) - Warwickshire (hybrid potential) - 6 Months (potential for renewal) The Opportunity The role is the principal virtual discrete event simulation engineer for Manufacturing Engineering and will be responsible for leading vehicle or system programmes Discrete Event Simulation function, modelling the process flow from concept thru to the delivery phase to JOB1 + 90 days. Key Performance Indicators - DES model achieves JPH target as per system scope requirements - Deliver optimum DES system cycle Time, Decoupling Buffer and Technical / Operational availability to achieve System OPR requirements - Deliver DES model and documentation to Programme timing milestones - OPR maps / Bottleneck analysis - Absence & PULSE Key Accountabilities and Responsibilities Responsible for the development and delivery of the Discrete Event...

A well-established client of ours are looking for a Project Manager for the delivery of essential infrastructure projects across electricity transmission, distribution, renewable energy and customer connection frameworks, with an emphasis on a National Grid substation in the Wiltshire area. This assignment will start 13/04/2026 and last 6 months. This would be an inside IR35 role. Key responsibilities: Lead multidisciplinary construction and engineering teams through end‑to‑end project delivery, ensuring alignment across civil, M&E, and commercial workstreams. Deliver projects to agreed time, cost, quality, and safety requirements. Drive a cohesive project team ethos across Construction Managers, Commercial Managers, Design Leads, and Project Engineers Provide strong safety leadership, including preparation and oversight of Health & Safety Plans, Method Statements, and Risk Assessments. Maintain the highest standards of HSEQ performance and ensure compliance with...

Data Analyst +Hybrid working in Reading +SC cleared role +Inside IR35 +£83 ph Skills: +Data Analyst +MOD experience +SC cleared Are you an experienced SC cleared Data Analyst ready to lead impactful, data-driven innovation? We're looking for a Principal Data Analyst to drive the design and delivery of advanced analytics solutions that inform strategic decisions and unlock business value. In this role, you'll be at the forefront of our data journey - leading technical initiatives, mentoring colleagues, and influencing how the organisation harnesses data. What You'll Do Lead the design and delivery of complex analytics and insight solutions across multiple projects Oversee dashboarding, reporting, and automation workflows using SQL and cutting-edge tools Define and implement best-practice data governance, security, and compliance standards Collaborate with architects, engineers, and business leaders to shape enterprise data strategy Inspire and guide stakeholders to...

Our client, a leading entity within the Defence & Security sector, is looking for a Senior/Principal Hardware Engineer to join their team for a contract position based in Rochester. This is a unique opportunity to work on cutting-edge projects involving Helmet Mounted & Head-Up Displays, Mission Computers, Flight Controls, and other associated safety-critical technology. Key Responsibilities: Executing complex hardware design tasks in accordance with the hardware development plan, whilst meeting agreed timescales and allocated budgets Conducting hardware requirements capture, preliminary design, detailed design including a range of analysis tasks Adopting an innovative approach to design and identifying improvements to working practices Working with other disciplines within an integrated team to optimise solutions and minimise impacts from dependencies Providing technical guidance and support to the development and delivery of all aspects of digital &/or analogue...

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...

We are looking for an Electrical Site Manager to oversee an electrical package for a major tunnel upgrade project, including the design, supply, installation, integration, testing, commissioning, and handover of the Tunnel Control System (TCS) and associated tunnel systems. We are seeking an experienced Electrical Site Manager to lead the on-site delivery of all electrical works within a live highways tunnel environment. This role is critical to ensuring safe, compliant, and high-quality installation and integration of complex tunnel systems. Key Responsibilities Site Management & Delivery Manage day-to-day electrical site operations across tunnel works Lead installation of electrical systems including: Tunnel lighting systems LV distribution and containment Emergency systems (UPS, fire alarm interfaces, etc.) SCADA / Tunnel Control System (TCS) infrastructure Ensure works are delivered in line with programme, budget, and quality requirements Coordinate subcontractors,...

Senior / Principal Electronics Engineer (Contract) Power Electronics | Aerospace | Technical Leadership | Cardiff If you’re the person others turn to for power electronics expertise — this is where you take full ownership. This Senior / Principal Electronics Engineer role is about leading the design and development of aerospace power conversion systems that must perform in demanding, safety-critical environments. You’ll be trusted as the technical authority — shaping architecture, making key design decisions, and ensuring systems meet both performance and regulatory expectations. If you enjoy solving complex power challenges and want to influence how systems are designed from the ground up, this role gives you that scope. What You’ll Be Responsible For as a Senior / Principal Electronics Engineer You’ll take ownership of AC/DC and DC/DC converter design across the full development lifecycle. Your work will include: * Leading detailed design and development of aerospace power...

Principal Structural Engineer Location: Manchester (Hybrid working, 3 to 4 days a week onsite) Contract: 12 month contract Rate: £400 to £490 per day (outside IR35) We are currently recruiting for a Principal Structural Engineer to join a growing engineering consultancy delivering major infrastructure projects across the rail and water sectors. This is an excellent opportunity to work on technically challenging projects while leading structural design delivery within an experienced multidisciplinary team. The Role As a Principal Structural Engineer, you will be responsible for providing technical leadership and ensuring high-quality structural design delivery across a range of infrastructure projects. You will work closely with clients, project teams, and junior engineers to develop safe, efficient, and compliant structural solutions. Key responsibilities include: Ensuring the design team produces deliverables that meet safety and quality requirements Approving design...