38 senior mechanical engineer jobs found

Mechanical Design Engineer – Water & Wastewater | Manchester (Hybrid) Location: Manchester – Hybrid working available Type: Permanent or Contract (Outside IR35) Want to design infrastructure that keeps the UK’s water and wastewater networks running safely and efficiently? Ready to take ownership of technical delivery while working on nationally important treatment works upgrades? Our client is expanding their specialist design team and is looking for a Mechanical Design Engineer to deliver high-quality, compliant solutions across major UK water industry projects. What You’ll Do Design mechanical solutions that meet safety, quality, and technical standards Produce design calculations, drawings, reports, and specifications Direct and support CAD technicians Prepare scopes and review outputs from subcontract M&E design teams Liaise with suppliers, review tenders, and specify equipment Carry out design investigations and technical reporting Ensure design changes are...

Job Title: Intermediate/Senior Mechanical Engineer - 12 Month Contract or Permanent Location: London based Contract Rate: £45-£50 per hour outside IR35 or Permanent Salary: £50-£60k About the Role: We are seeking an experienced Mechanical Engineer to join a dynamic team focused on innovative engineering solutions in the water and environmental sector. This role offers the flexibility of primarily remote work, with occasional visits to the London office, and provides the opportunity to work on cutting-edge projects in a collaborative environment. Key Responsibilities: Design, develop, and optimise mechanical systems and components. Prepare detailed engineering drawings, specifications, and documentation. Work closely with project teams to deliver solutions from concept through to installation and commissioning. Support project planning, risk assessment, and troubleshooting mechanical issues. Ensure compliance with relevant industry standards, codes, and best practices....

IMMEDIATE START, OUTSIDE IR35 CONTRACT - Senior Electrical Engineer I’m in search of a contract Senior Electrical Engineer who can deliver the detailed electrical design for a containerised ammonia cracker system, supporting safe, reliable, and standards-compliant operation within a modular container environment. The scope of work includes development of the overall electrical architecture, load calculations, and power distribution design, including single line diagrams, protection philosophy, cable sizing, and equipment specification (switchgear, distribution boards, UPS, and associated systems). The contractor shall design and integrate control systems, including PLC hardware selection, I/O definitions, and communication networks, ensuring full compatibility with process and instrumentation requirements. The work shall address hazardous area requirements associated with hydrogen, including equipment selection (ATEX/IECEx where required), area classification support, intrinsic...

Contract position Outside IR35 On-site - Hybrid working in West Sussex Our client, a leader in the automotive sector, is currently seeking a skilled Mechanical Design Engineer to join their team on a contract basis. This role involves designing a wide range of complex engine components, with a focus on off-highway, large engine, heavy-duty, and marine applications. Key Responsibilities: The mechanical design of components through concept, definitive, and detail design phases Carrying out detailed mechanical design work including 3D modelling, basic stress calculations, FMEA's, 2D layouts, 2D detailing, and tolerance stacks Ensuring that system and component specifications meet the required design standards Creating 2D drawings for manufacture or purchase Producing assembly drawings and bills of materials Managing design change requests in a timely manner Ensuring the fit and function of responsible parts or systems and their interaction with other systems Maintaining up-to-date...

ADDISON PROJECT PLC – Senior Project Engineer, Thornton-Cleveleys For over 25 years, Addison Project plc has delivered innovative, sustainable engineering solutions across the chemical, pharmaceutical, energy, and food & beverage sectors. As a family‑owned business with UK‑wide coverage, we combine technical excellence with a collaborative, client‑focused approach. Our fully integrated EPCM capability supported by strong CDM and HSSEQ leadership and accredited management systems ensures projects are delivered safely, efficiently, and to the highest standards from concept through to commissioning and start‑up. If you're passionate about engineering and want to join a dynamic, people‑focused consultancy driving progress and sustainability across the UK’s manufacturing and process industries, Addison Project is the place for you. Role: Senior Project Engineer (Contract outside IR35) Location: Thornton-Cleveleys Contract: 12 months Start Date: Spring 2026 WORKSCOPE Addison...

Principal Mechanical Engineer – Water Leading Engineering Consultancy | Water Sector | Hybrid Working | Long-term Contract | Outside IR35 | Competitive Rate The Opportunity We're recruiting a Principal Mechanical Engineer to deliver high-quality mechanical engineering design and technical leadership across multiple water sector projects. You'll be responsible for leading mechanical engineering workstreams, ensuring compliance with sector standards, managing design delivery, and mentoring engineering teams. Contract Details: Outside IR35 | Competitive daily/monthly rate | Hybrid working| Long-term contract MUST HAVE: Current water sector experience. This is a senior technical role for an SQEP (Suitably Qualified Experienced Person) mechanical engineer with proven, recent expertise in water, wastewater or biosolids treatment. You'll have the capability to lead mechanical engineering on projects or groups of projects, managing design quality, timescales, cost and compliance....

Contract Senior Mechanical Project Engineer – Long Term Contract - North Lincolnshire - Outside IR35 – Rate in the region of £50.00 per hour – Manufacturing Client We are recruiting for an experienced Senior Mechanical Project Engineer to join a major COMAH regulated manufacturing site in North Lincolnshire on a long-term contract basis. The role will involve managing multiple upgrade and modification projects across the plant, including the replacement and installation of: Piping, Valves, Vessels, General mechanical plant equipment. Projects will typically range up to £300k in value, and you’ll be working within an established project team on a busy COMAH manufacturing site. Essential Requirements: * Degree qualified in Mechanical Engineering * Proven experience delivering projects on a Chemical plant, Petrochemical site, Refinery, COMAH facility * Strong background managing mechanical upgrade/modification projects Please note: My client can only consider candidates...

An excellent opportunity has arisen for an experienced Electrical Design Engineer to join a well-established building services consultancy in London on an contract basis outside IR35. This hybrid role will involve working as part of a multidisciplinary building services engineering team, supporting the delivery of electrical design solutions across a range of building projects. The successful Electrical Design Engineer will contribute to the development of electrical building services designs, technical documentation and coordinated BIM models. This role is based in the London office with hybrid working available, offering the chance to work on high-quality building services projects alongside experienced engineers and consultants. Key Responsibilities · As an Electrical Design Engineer, your responsibilities will include: · Producing electrical building services designs for a variety of building projects · Developing electrical schematics, layouts and...

An excellent opportunity has arisen for an experienced Electrical Design Engineer to join a well-established building services consultancy in London on an contract basis outside IR35. This hybrid role will involve working as part of a multidisciplinary building services engineering team, supporting the delivery of electrical design solutions across a range of building projects. The successful Electrical Design Engineer will contribute to the development of electrical building services designs, technical documentation and coordinated BIM models. This role is based in the London office with hybrid working available, offering the chance to work on high-quality building services projects alongside experienced engineers and consultants. Key Responsibilities · As an Electrical Design Engineer, your responsibilities will include: · Producing electrical building services designs for a variety of building projects · Developing electrical schematics, layouts and...

ELECTRICAL BUILDING SERVICES ENGINEER    POSITION :  Electrical Building Services Engineer    LOCATION : Commutable from Leeds , Sheffield, Doncaster, York , Hull , Harrogate, Grimsby , Scunthorpe, Beverley, Lincoln , Barnsley , Rotherham, Scarborough    The client offers a hybrid mix of home working and office based work    HOURLY RATE :  £22 - £28 ph - Ltd Co ( outside IR35) and PAYE options available. Equivalent of £42,300 - £47,600    THE ROLE : This is an excellent opportunity for a Electrical Building Services Engineer to join our forward thinking Public Sector client.  They offer the opportunity to work on some exciting projects as part of their multi-discipline team working on Capital Projects. The working hours are 37 hours per week. Genuine flexible working arrangements are available This is an initial 6 month contract with a good chance of an extension    YOU MUST HAVE THE FOLLOWING : Previous experience working as a Electrical Building Services Engineer including...

Asset Senior Maintenance Engineer - Contract Location: Doncaster | Rate: £38 per hour (umbrella) Overview An exciting contract opportunity for an experienced Asset Senior Maintenance Engineer to lead the management of highway electrical assets in Doncaster. You will oversee maintenance, replacement, and compliance testing programmes, support street lighting policy, and ensure safety and efficiency for the local highway network. Key Responsibilities Lead highway electrical asset management, ensuring compliance with legislation, standards, and H&S requirements. Develop and manage cyclic and reactive maintenance programmes, controlling budgets and costs. Maintain accurate asset records and statutory certifications. Handle unmetered energy extract, accident damage, and insurance claims. Provide technical guidance for energy-efficient lighting and traffic schemes. Deputise for the CMS Manager and Highways Electrical Duty Holder as required. Essential Skills &...

Grid Integration and System Studies Engineer – 1 year contract Our client, a leading developer within the global offshore wind sector, is looking to hire a Grid Integration and System Studies Engineer for an initial 1 year contract. This role can be based at one of 3 locations – London, Coventry or Swindon. The role will be offered on Outside IR35, Limited Co, contract for initial duration of 1 year. Duties / Responsibilities: The Engineer will sit in Client Renewables Electrical System & Project Engineering team, supporting the Project’s Engineering and Package Managers with responsibilities including: • Working in construction or development phases of our offshore wind farm projects, the Engineer will be responsible for ensuring a robust and optimised through life design of the project’s electrical system supporting on all aspects of the generation and transmission system up to the grid interface point. • Advise projects on specific questions regarding...

EC&I Engineering Manager Nuclear Manufacturing Company | Near Manchester Up to £65.40 per hour | Outside IR35 4-Day Working Week (4 x 10-hour days) A leading nuclear manufacturing company near Manchester is looking for an experienced EC&I Engineering Manager to lead multidisciplinary engineering teams across the delivery of complex projects within a highly regulated environment. This is a senior leadership role, responsible for driving engineering delivery from bid stage through to project completion, ensuring compliance, quality and successful project execution. The role will support the development of specialist systems and equipment, including gloveboxes and similar containment solutions. The Role Lead and manage multidisciplinary engineering teams across project delivery Act as the technical lead during bid and tender activities Oversee engineering scope, schedules, budgets and delivery strategies Provide technical direction and assurance throughout the project...

Senior EC&I Engineer Nuclear Manufacturing Company | Near Manchester Up to £51.40 per hour | Outside IR35 4-Day Working Week (4 x 10-hour days) A specialist nuclear manufacturing company near Manchester is looking for a Senior EC&I Engineer to support the design and delivery of complex engineering projects within a highly regulated environment. This role will involve working on specialist systems and equipment, including gloveboxes and similar containment solutions, supporting projects from concept through to manufacture and commissioning. Key Responsibilities Deliver EC&I design activities across concept, scheme and detailed design stages Produce and support technical documentation for UKCA / CE Marking compliance Ensure designs meet applicable safety standards and engineering regulations Support multidisciplinary engineering teams throughout project delivery Provide technical support during manufacture, testing and commissioning What We're Looking For Strong...

Principal EC&I Engineer Nuclear Manufacturing Company | Near Manchester Up to £58.50 per hour | Outside IR35 4-Day Working Week (4 x 10-hour days) A leading nuclear manufacturing company near Manchester is looking for a Principal EC&I Engineer to support the delivery of complex engineering projects within a highly regulated environment. This is a fantastic opportunity to join a growing team working on specialist equipment and systems, including gloveboxes and similar containment solutions. Key Responsibilities Lead EC&I engineering activities across design and project delivery Support UKCA / CE Marking compliance and technical file documentation Ensure designs comply with relevant standards and legislation Work closely with multidisciplinary engineering teams and stakeholders Provide technical oversight during manufacture, testing and commissioning What We're Looking For Strong experience in UKCA / CE Marking Background in highly regulated engineering...

Electrical Project Engineer to work on a large substation project for the next 1 – 2 years in Ipswich, Suffolk Paying £425 – 450 a day + Outside IR35 + Site/ Home working + Long Term We are currently looking for an experienced Project Engineer with a strong Electrical background to support a major substation project based in Ipswich. This is a long-term contract opportunity offering over 1 – 2 years of work, with a planned start date in July/August 2026. Role Overview The successful candidate will play a key role in delivering substation works, coordinating engineering activities, supporting site teams, and ensuring projects are delivered safely, on time, and to specification. Key Requirements * Proven experience working as a Project Engineer within the utilities, power, or energy sector * Strong Electrical engineering background * Previous experience working on substation projects is essential * Ability to coordinate subcontractors, suppliers, and site...

Senior Site Engineer - Water Project - Civil Engineering - Major Infrastructure Location: Oxford, Oxfordshire Rate: £350 - £400/day Outside IR35 Contract Type: Freelance Start Date: June 2026 Are you an experienced Senior Site Engineer looking for your next challenge on a major reservoir and water infrastructure project? We are recruiting for a Tier 1 civil engineering contractor delivering a significant reservoir improvement / water infrastructure scheme, offering long-term work and career progression opportunities. This is an excellent opportunity for a Senior Engineer with a strong background in heavy civils, water, infrastructure, earthworks, reinforced concrete and major projects. Key Responsibilities * Overseeing engineering activities across the reservoir project * Managing and reviewing setting out activities * Producing and reviewing RAMS, ITPs, WPPs and QA documentation * Ensuring works are delivered safely, to programme and specification * Managing...

Mechanical Project Engineer to work on a large substation project for the next 1 – 2 years in Ipswich, Suffolk Paying £425 – 450 a day + Outside IR35 + Site/ Home working + Long Term We are currently looking for an experienced Project Engineer with a strong mechanical background to support a major substation project based in Ipswich. This is a long-term contract opportunity offering over 1 – 2 years of work, with a planned start date in July/August 2026. Role Overview The successful candidate will play a key role in delivering substation works, coordinating engineering activities, supporting site teams, and ensuring projects are delivered safely, on time, and to specification. Key Requirements * Proven experience working as a Project Engineer within the utilities, power, or energy sector * Strong mechanical engineering background * Previous experience working on substation projects is essential * Ability to coordinate subcontractors, suppliers, and site...

Senior Data Engineer Location: Bristol Contract: Outside IR35 Rate: £68 per hour Security Clearance: DV Cleared Working Pattern: 5 Days On Site Nationality Requirement: Sole British Nationals Only THE ROLE We are recruiting on behalf of a highly secure engineering and technology programme seeking an experienced Senior Data Engineer to support the design, development and delivery of secure, scalable and high-performance data solutions within a regulated environment. This role will focus heavily on the Elastic Stack and Apache NiFi, supporting enterprise-scale data ingestion, transformation and analytics capabilities across complex secure systems. The successful candidate will play a key role in architecting resilient data platforms, optimising real-time and batch processing pipelines, and ensuring compliance with strict governance and security standards. KEY RESPONSIBILITIES Data Architecture & Engineering - Design and implement scalable, resilient data pipeline...

MicroStation Technician (2D) - Rail Bridges Clapham Junction, South West London £35 per hour Outside IR35 Contract Hybrid Working | Rail Infrastructure Projects Looking for your next rail contract opportunity? An established Civil & Structural Engineering consultancy in South West London is seeking an experienced MicroStation Technician to support a growing portfolio of major rail infrastructure projects across the South East. The consultancy has a strong presence within the rail, bridge engineering, and infrastructure sectors, with ongoing work across a number of Network Rail and transportation schemes. Current projects include a range of Network Rail bridge schemes, station upgrades, structural refurbishments, and associated civil engineering works involving both steel and reinforced concrete structures. Why apply? ·Outside IR35 contract ·3-month contract opportunity ·Hybrid working arrangement ·Immediate start available ·Opportunity to work on major Network...