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Contractor 129
Unknown Status senior mechanical engineer

129 senior mechanical engineer jobs found

CL
Jul 01, 2026  
Senior Mechanical Engineer
Are you a Senior Mechanical Engineer ready to work on complex tooling and cutting-edge operations within a highly regulated environment? Do you have experience developing design packages for manufacture and installation, including drawings and technical documentation? Are you confident working within strict engineering standards and security-cleared environments? The Opportunity An exciting opportunity has arisen with a leading engineering organisation to support a specialist design office delivering innovative tooling solutions for early-stage nuclear decommissioning operations. You will play a key role in developing engineering solutions that directly support critical project delivery. We would also welcome applications from these industries Nuclear, defence, oil and gas, heavy engineering, advanced manufacturing This role would suit candidates working in these roles Senior Mechanical Engineer, Mechanical Design Engineer, Project Engineer, Design Engineer, Tooling...
IR35 Status:
Unknown Status

CV-Library Gosforth, Seascale CA20, UK Contractor
CL
Jul 01, 2026  
Senior Mechanical Engineer
Ready to take the lead on complex mechanical engineering projects in a highly regulated environment? Do you have strong experience designing mechanical handling systems or bespoke equipment for critical infrastructure projects? Are you confident working to strict safety, quality, and regulatory standards while delivering under pressure? The Opportunity An exciting opportunity has arisen for a Senior Mechanical Engineer to join a leading engineering consultancy supporting major long-nuclear decommissioning programmes. You will play a key role in delivering complex mechanical solutions within a challenging, highly regulated environment. We would also welcome applications from these industries Nuclear, defence, oil and gas, utilities, and heavy manufacturing This role would suit candidates working in these roles Senior Mechanical Engineer, Mechanical Design Engineer, Mechanical Handling Engineer, Principal Mechanical Engineer, Project Mechanical Engineer, Equipment Design...
IR35 Status:
Unknown Status

CV-Library Warrington, UK Contractor
CL
Feb 13, 2026  
Senior Integrity Engineer – Mechanical
Senior Integrity Engineer – Mechanical Our client, a leading independent Oil & Gas Operator, is looking for a Senior Integrity Engineer to join their dynamic team at Wytch Farm oilfield near Corfe Castle, Wareham, Dorset. This is an initial 12 month contract with the scope to become longer term for the right individual. Qualifications & Experience Required: * A Mechanical Engineering BEng/MEng degree is essential. * Chartered Engineer CEng or actively working towards professional membership – desirable * API / EEMUA certifications - desirable * Ideally a minimum of 8 years evidenced senior mechanical engineering experience within the oil and gas industry. Also open to candidates with a minimum of 5 years relevant engineering experience within a related industry. * A working knowledge of UK onshore safety legislative environment and applicable codes and standards for pressure equipment and pipelines. * Rigorous attention to detail in a high-hazard...
IR35 Status:
Unknown Status

CV-Library Wareham, Dorset Contractor
CL
Jun 24, 2026  
Senior Mechanical Design Engineer
Our client is a well-established, multi-disciplinary engineering and project consultancy operating across the built environment in England. The organisation delivers technically robust mechanical design and advisory services across a varied portfolio of complex projects, primarily within regulated and public-sector environments. Known for its collaborative culture and strong commitment to professional development, the business offers a supportive, long-term career path for experienced engineers seeking senior responsibility and influence. Senior Mechanical Design Engineer - Salary & Benefits Salary £70,000 - £85,000 (dependent on experience) Car Allowance Nest Pension Scheme 22 days annual leave, with discretionary Christmas shutdown Hybrid Working Discretionary annual bonus Bupa Private Healthcare/ Dental Cover Extensive APC / chartership support where relevant to the role Cycle to Work Scheme/ EV Scheme Early finish on the last Friday of every month Senior Mechanical...
IR35 Status:
Unknown Status

CV-Library Billericay, Essex Contractor
CL
Jun 13, 2026  
Senior Mechanical Design Engineer
Senior Consultant - Engineering Design Location: London - 5 days a week 40 hours per week (hybred 3 days in the office min) Contract: Freelance / Contract / 6 Months + £315 per day Limited company Engineer Innovation From Concept to Manufacture We are working with a leading product innovation consultancy seeking an experienced Senior Consultant for Mechanical Engineering Design, to deliver complex engineering projects from concept through to production in the Medical and consumer product world. This role suits a technically strong, commercially aware engineer with experience leading projects, solving complex design challenges, and managing client relationships. Key Responsibilities Lead client communication and project delivery Interpret briefs, define requirements, and manage plans, budgets, and timelines Develop innovative engineering concepts and assess feasibility Deliver robust designs using 3D CAD, FEA/CFD, mathematical modelling, and prototype testing Support...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jul 01, 2026  
Principal Mechanical Engineer
Are you an experienced Mechanical Engineer ready to take ownership of complex, high-risk engineering solutions? Do you have a strong background in delivering design packages through to manufacture and installation? Are you confident leading teams and acting as the technical focal point on critical engineering programmes? The Opportunity A leading engineering consultancy is seeking a Principal Mechanical Engineer to support the development of innovative tooling solutions for complex nuclear decommissioning environments. This is a key role driving projects from initial concept through to fully deployable systems. We would also welcome applications from these industries Candidates with experience in nuclear, defence, oil and gas, heavy manufacturing or highly regulated industrial environments are encouraged to apply. This role would suit candidates working in these roles This opportunity would suit professionals currently working as a Senior Mechanical Engineer,...
IR35 Status:
Unknown Status

CV-Library Warrington, UK Contractor
CL
Jul 04, 2026  
Mechanical Project Engineer
Mechanical Project Engineer Thetford 12 Month Contract 1st Step Solutions are supporting a leading Tier 1 M&E Contractor who have an opportunity for an experienced Mechanical Project Engineer to be based on a new project in Thetford. Due to the nature of the project, we do require applicants who have current SC Clearance OR would be able to pass the vetting process. Responsibilities: - Attend & host team meetings. - Lead and issue meeting notes for technical and progress workshop meetings. - Reviewing tender information including design drawings, specifications and equipment schedules. - Delivering the design / working drawings necessary to deliver the project and ensure you capture any additional costs and programme delays caused by external influences on their production. - Production and technical compliance checking of technical submissions against specifications and ER documents. - Production of package scoping documents. - Reviewing and compliance checking our...
IR35 Status:
Unknown Status

CV-Library Thetford, UK Contractor
CL
Jul 03, 2026  
Senior Nuclear HVAC Engineer
Senior Nuclear HVAC Engineer Location: Altrincham / Manchester. This can be worked on a hybrid basis, three days in the office and two remote. About this role: Due to new project wins and continued growth, we're looking for Senior Nuclear HVAC Engineers to join our Power, Process & Nuclear division. This role offers an exciting opportunity to work on innovative projects across the defence and nuclear new-build industries. As part of our growing team, you will contribute to high-profile engineering challenges while developing your career within an organisation committed to supporting your professional growth. Responsibilities: - Produce detailed design calculations to support design requirements - Producing documentation, assessment/condition reports, survey reports, basis of designs, procurement specifications, etc. - Production and review of detailed design calculations to support design proposals - Production and review of detailed design drawings, layouts and...
IR35 Status:
Unknown Status

CV-Library Altrincham, UK Contractor
CL
Jul 02, 2026  
Senior Piping Designer
Piping Designer – Water Industry (Revit) Contract  We are currently supporting a client within the water sector in the search for a skilled and detail-oriented Piping Designer to support the design and coordination of water infrastructure projects. Reporting to the Principal Engineer, this role will focus on the design and layout of wet wells, pump chambers, and associated ductile iron pipework, with an emphasis on constructability, maintainability, and operational access. The successful candidate will have experience working with Revit in 3D design environments and supporting multi-disciplinary project teams. Key Responsibilities Produce 3D models and detailed General Arrangement drawings (GAs) using Revit. Develop layouts of wet and dry well pumping stations, concrete pump chambers, ductile iron and epoxy coated carbon steel pipework, valves, and pipe support systems. Coordinate and integrate vendor equipment packages into the design. Layout and model access platforms,...
IR35 Status:
Unknown Status

CV-Library Manchester, UK Contractor
CL
Jul 02, 2026  
Helpdesk Supervisor
Service Desk Supervisor - Building Services & Maintenance Ongoing Temporary Role - Minimum 2 Months 📍 Location: Hemel Hempstead / Central London 🕒 Hours: Monday-Friday, 8am-5pm (40 hours per week) 💷 Hourly Rate: £15.50 - £17.30 per hour 📅 Contract: Ongoing temporary assignment (minimum 2 months) A leading building services and maintenance provider is seeking an experienced Service Desk Supervisor to support the business on an ongoing temporary basis due to long-term sickness cover within the team. This is a hands-on supervisory role managing the daily operations of a busy service desk supporting mechanical, electrical and HVAC maintenance contracts across London and the Home Counties. Key Responsibilities Supervise daily service desk operations and coordinate engineer schedules Manage PPMs, reactive maintenance and subcontractor activities Oversee quotations, service reports, invoicing and CAFM updates Ensure all works are completed within SLA and compliance standards...
IR35 Status:
Unknown Status

CV-Library Hemel Hempstead, Hertfordshire Contractor
CL
Jul 02, 2026  
Senior Substation Secondary (P&C) Design Engineer
Locations: Birmingham | Epsom | Glasgow | Leeds Sector: Transmission & Distribution | Power & Energy | Net Zero Infrastructure Working Pattern: Hybrid (minimum 3 days in office/site per week) Shape the Future of Energy Infrastructure We are seeking experienced Electrical Engineers with a passion for power systems, electrical engineering, and the transition to Net Zero. This is an exciting opportunity to join a growing Power & Energy team delivering critical substation design projects across the UK and internationally. Working with major clients including National Grid, SSEN Transmission, and other leading energy organisations, you will contribute to projects spanning Front-End Engineering Design (FEED) through to Detailed Design across electricity transmission and distribution networks. This role offers excellent professional development, exposure to high-profile infrastructure projects, and ongoing support towards Chartership. The Role As a Senior Electrical...
IR35 Status:
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CV-Library United Kingdom Contractor
CL
Jul 02, 2026  
Senior Electrical Design Engineer
We are seeking an experienced Electrical Design Engineer to support a young building services consultancy that’s fast establishing a strong reputation for providing clients with technically robust engineering solutions and a pragmatic approach. With a growing portfolio, covering projects across Kent and the South East, this is an excellent opportunity for a contractor with strong technical design capabilities and experience delivering electrical building services solutions from concept through to detailed design, who’s looking for more variety, influence, and responsibility on a project. Key Responsibilities * Produce electrical building services designs for a range of building types working across a broad range of sectors; commercial, retail, educational, healthcare etc. * Prepare calculations, specifications, reports, drawings and technical documentation. * Design systems including: * LV power distribution * Lighting and emergency lighting * Fire...
IR35 Status:
Unknown Status

CV-Library TN12, Paddock Wood, Kent Contractor
CL
Jul 01, 2026  
Senior Electrical Design Engineer (Building Services)
Senior Mechanical/Electrical Engineer (Building Services) £60.69 per hour Umbrella  BAE Systems Preston Hybrid working - 1-2 days per week including travel to other UK sites (expenses covered). 12 month contract Role Description • Reports to the RE&I S Programmes Principal Building Services Engineer. • Assist or lead the preparation of a range of documents and concept design solutions for projects in support of land, sea, and air operations, personnel training, and production & maintenance facilities throughout the UK and Middle East. • Work as part of a high performing team to deliver construction / FM projects to ensure the correct Engineering support is applied through the project lifecycle. • Management and oversight of external design consultants/ specialists as appropriate, inspection of construction works and undertaking surveys of existing infrastructure, writing of technical reports/ papers and presenting findings to others. Core Duties...
IR35 Status:
Unknown Status

CV-Library Preston, UK Contractor
CL
Jul 01, 2026  
Mechanical Project Engineer
Mechanical Project Engineer Tier 1 MEP Contractor | Data Centre Projects 📍 East London 💷 Permanent or Freelance (CIS / Ltd) I’m currently representing a market-leading Tier 1 MEP Contractor with a strong presence across the UK and Europe, delivering complex projects across the Data Centre, Commercial, Infrastructure and Life Sciences sectors. Due to continued growth and a secured pipeline of mission critical projects, they are now looking to appoint a Mechanical Project Engineer to join the delivery team on a major Data Centre development in East London. This is an excellent opportunity to work on a technically challenging, fast-paced project with a highly experienced delivery team and genuine long-term progression opportunities within one of the industry’s most sought-after sectors. The Opportunity Working alongside Senior Project Managers and site teams, you’ll play a key role in the delivery and coordination of mechanical building services packages across a large-scale...
IR35 Status:
Unknown Status

CV-Library E1, Whitechapel, Greater London Contractor
CL
Jun 28, 2026  
CFD Engineer
Hexwired has partnered with a UK-based engineering consultancy specialising in advanced Computational Fluid Dynamics (CFD) and aerodynamic development, applying high-performance simulation techniques originally developed in motorsport to sustainability, energy efficiency, and built environment applications. We are seeking a CFD Engineer / Aerodynamicist to join a highly skilled engineering team delivering complex fluid dynamics and aerodynamic development projects. The role involves both independent project ownership and collaborative work across multidisciplinary engineering teams. You will contribute to aerodynamic development programmes, support CFD methodology improvement, and help deliver innovative engineering solutions applied to real-world systems and efficiency-driven design challenges. Key Responsibilities * Deliver CFD and aerodynamic development projects with support from senior engineers or independently where appropriate * Define project scope, technical...
IR35 Status:
Unknown Status

CV-Library Oxford, Oxfordshire Contractor
CL
Jun 28, 2026  
EC&I Engineer
Senior EC&I Engineer (Contract) Contract Type: Contract / Freelance Location: UK - Project / Site Based Department: Engineering Reporting To: Engineering Manager Start Date: ASAP (subject to contract) Role Overview We are seeking an experienced Senior EC&I Engineer to support the design, installation, commissioning, and technical assurance of a broad range of automatic door and access systems on a contract basis. The role will focus on project delivery and specialist EC&I input across pedestrian automatic doors, large industrial doors, and safety‑critical doorsets, operating within nuclear, defence, transport, and other high‑hazard environments. Acting as the EC&I technical focal point within project teams, you will work closely with Mechanical Engineers, subcontractors, and client stakeholders to ensure systems are safe, compliant, and delivered to specification. Key Responsibilities Provide EC&I engineering support across defined project scopes and...
IR35 Status:
Unknown Status

CV-Library United Kingdom Contractor
CL
Jun 19, 2026  
Senior Systems Engineer
The RLE INTERNATIONAL Group is one of the world's leading providers in the fields of vehicle development, technology and consulting. On the basis of more than 40 years of development & consulting, we provide innovative and effective solutions for our UK customers in the area of Automotive Engineering. RLE INTERNATIONAL is represented at locations close to its customers in Europe, Asia and USA. Job Title: Senior Systems Engineer – Energy Storage Systems Rate: Negotiable (in line with experience) Location: Oxford/Banbury – 3 months (potential to extend) Job Description: We are seeking a Systems Engineer to support the development and integration of an energy storage program utilizing electric motors, power inverters, and battery systems. The Systems Engineer will be responsible for defining system requirements, ensuring subsystem integration, managing technical risks, and supporting the full system lifecycle from concept through deployment and operation. Key...
IR35 Status:
Unknown Status

CV-Library Oxford, Oxfordshire Contractor
CL
Jun 12, 2026  
Process Project Engineer – Moulding / Manufacturing
Process Project Engineer – Moulding / Manufacturing Role Exciting new role with our client a multinational Medical Device and Healthcare products provider. NIRAS is actively recruiting for an energetic and hands-on Manufacturing/Project Engineer to lead a key project within our Client’s Advanced Manufacturing Engineering & Process Development Team. You will work closely with Engineering, Manufacturing, Quality, R&D and Sustaining departments in the development and delivery of new process layouts, innovative automation solutions, improvement of lean processes necessary to produce components for an advanced medical device product. You will have proven problem solving, supervisory, technical ability, be approachable and able to build teams and collaborate with multi discipline teams with ease. You will be curious and questioning and establish risks and pitfalls to ensure surprises are minimized. You are an effective and able communicator, working at all levels of the...
IR35 Status:
Unknown Status

CV-Library Castlebar, Mayo County Contractor
CL
Jun 12, 2026  
Project Engineer (Aseptic Pharma)
Project Engineer (Aseptic Pharma Manufacturing Environment) Westport, Co. Mayo. Ireland Who We are: NIRAS Ireland provides Project Management, Engineering Design, and Project resourcing services to the Pharmaceutical and Life Science Sectors. As a company we specialize in the design and delivery of process-driven projects across Ireland and internationally. Opportunity We are now recruiting a Process Project Engineer to join our client’s high performing Engineering team in Westport Co. Mayo. Successful candidate will join a team of 6, reporting to Sr. Manager and be responsible for a portfolio of small-large sized projects (20K to 15 million) related to new equipment/technologies and/or upgrades. Cross-functional role - Will support Operations, EHS and Quality departments and be responsible for 5-6 projects at any one time – from cradle to grave. Projects may include installation of automated packaging lines or other equipment onsite; overseeing / securing funding, selection...
IR35 Status:
Unknown Status

CV-Library Westport, Mayo County Contractor
CL
May 01, 2026  
Mechanical Design Engineer - Building Services
The Company On-going success means my client requires a Mechanical Design Engineer (Building Services). Reporting directly to the senior Chartered Engineering manager, you will be joining a team of Building Services and CAD engineers. The Role: A Mechanical Design Engineer with demonstrable knowledge of reviewing drawings, surveying existing installations and designing HVAC systems. Most of the work is Mechanical design engineering to projects providing HVAC mechanical services solutions. You will see the project through from concept to hand-over, working closely with estimating and project management departments. Duties will include: * involvement in the design of HVAC systems to enable both new and existing systems * creating new ventilation ductwork systems, CHW & LTHW systems etc, Head Load, Cooling Load calculations, onsite visits, meetings and communicating with various clients, architects and sub-contractors etc * Coordination with electrical counterparts * take...
IR35 Status:
Unknown Status

CV-Library Birmingham, West Midlands (County) Contractor
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