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Contractor 72
London mechanical engineer

72 mechanical engineer jobs found in London

CL
Jun 10, 2026  
Mobile Mechanical Engineer
Mechanical Maintenance Engineer -  Mobile - Temp ongoing - FM Service Provider - South and North London sites Are you a Mechanical Maintenance Engineer looking for a new challenge? Are you looking for work in and around South / North London ? Are you looking for temporary work?  If the answer is yes, then read on... A Fantastic opportunity to work for a leading FM Service Provider. CBW is currently looking for a Mobile Mechanical / Plumbing Maintenance Engineer to be covering multiple Residential buildings around South and North London. The successful candidate will be Mechanically / Plumbing biased (NVQ, C&G) with a proven track record in Commercial / Residential building maintenance. Working with the maintenance team on-site, He or she will be required to carry out Plumbing and Mechanical maintenance to the following. Duties & Responsibilities: Lighting (Small installation, Fault-finding, Lamping, Changing ballast, Control panel, Power distribution) Emergency...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 12, 2026  
Mechanical Engineer
Job Title: Mechanical Engineer Location: Millwall, Greater London Remuneration: £29.00 per hour Contract Details: Fixed Term Contract - 3 weeks, Full Time Responsibilities: Design and develop mechanical systems and components to meet project specifications. Conduct feasibility studies and cost analyses for proposed engineering solutions. Collaborate with cross-functional teams to ensure project milestones are met. Perform testing and validation of mechanical designs to ensure safety and performance standards. Troubleshoot and resolve engineering issues as they arise during the project lifecycle. Prepare detailed documentation of engineering processes and results. Contribute to continuous improvement initiatives within the engineering department. Join our dynamic team as a Mechanical Engineer, where your expertise will play a crucial role in delivering innovative solutions. With a competitive hourly rate of up to £29.00, this fixed-term contract offers a great opportunity for...
IR35 Status:
Unknown Status

CV-Library City of London, London Contractor
CL
May 21, 2026  
Mechanical Engineer
Mechanical Engineer, Contract basis, long-term (Ongoing). Design and Build M&E Building Services Contractor. Site Based, Central London. Mixed use projects; Residential and Commercial Weekly paid via agency Required Qualifications & Experience: * Previously held a building mechanical services engineer’s role within a contracting/sub- contracting construction business. * Very strong practical and design knowledge of building mechanical services * Good commercial awareness * Appropriate level Mechanical Engineering Qualifications * Full UK Working entitlement Responsibilities; * Engineering of single or multiple projects from tender to design development, procurement, construction, handover and defect liability stages * Liaising closely with other professionals, incl. structural engineers, builders, architects and surveyors, in-house project teams * Working with the estimating team to produce successful tender bids * Development of Consultants...
IR35 Status:
Unknown Status

CV-Library Hackney, Greater London Contractor
CL
Jun 11, 2026  
Principal Mechanical Water Design Engineer
Principal Mechanical Engineer Shape the Future of Our Cities and Environments Our client is seeking an experienced and dynamic Principal Mechanical Engineer to join their Design & Advanced Technology (D&AT) team. As part of a talented, multi-disciplinary group, you will be at the forefront of delivering innovative and iconic projects within the Water market. This is an opportunity to work on cutting-edge engineering projects that have a global impact, contributing to critical UK infrastructure both domestically and internationally. This role offers you the chance to make a significant impact, playing a key role in transformational programmes while delivering industry-leading solutions throughout the project lifecycle. Location: Hybrid working available (3 days per week office/site-based) Type: Contract Rate: £68 per hour Your Role As a Principal Mechanical Engineer, your responsibilities will include: ·Leading a team of Mechanical engineers in delivering technical...
IR35 Status:
Unknown Status

CV-Library Central London, London WC2N 5DU, UK Contractor
CL
Jun 12, 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 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
May 16, 2026  
Senior Electrical Design Engineer
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...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 14, 2026  
Commissioning Engineer
Commissioning Engineer - Water & Wastewater London (with site travel as required) 45 hours per week Overview We are seeking an experienced Commissioning Engineer to join a major main contractor delivering complex water and wastewater process engineering projects. This role is critical to ensuring safe, compliant, and right‑first‑time installation, testing, and commissioning from design through to handover. You will play a leading role across the full commissioning lifecycle, working closely with design teams, suppliers, subcontractors, and client stakeholders to deliver high‑quality outcomes. Key Responsibilities Commissioning & Technical Delivery Provide full lifecycle commissioning input from design through installation, testing, commissioning, and handover. Develop and implement commissioning plans, procedures, and documentation. Undertake hands‑on commissioning activities across electrical, mechanical, and process systems. Lead and witness FAT and SAT...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 06, 2026  
Electrical Engineer
We are currently recruiting for a Electrical Maintenance Engineer to work for one of the UK’s largest maintenance contractors in London. Duties will include: · Carrying out scheduled PPM and reactive maintenance tasks in maintaining site assets ensuring equipment availability. * Ensure that routine maintenance is carried out to all building plant, equipment and systems to meet and exceed expectations, and agreed service level agreements. * Respond to Building Management System alarms, and effect emergency repairs as needed. * Issue and ensure appropriate controls within the Permit to Work systems. * Ensure that Evaporative Cooling Systems and domestic water systems are maintained to comply with the requirements of the L8 standard. * Ensure that suitable spares are available to carry out maintenance of the above plant. * Ensure that comprehensive maintenance records are kept in the form of task sheets – hard copy or electronically as required. * Ensure that...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
May 23, 2026  
Senior Electrical Design Engineer (MEP)
Role: Freelance Senior Electrical Design Engineer (MEP)- £45 - £50 Per Hour The role involves leading the electrical design and delivery of complex building services projects across a range of sectors including commercial, residential, healthcare, education, and mixed-use developments. You will take technical ownership of projects, mentor junior engineers, and work closely with clients and the wider design team to deliver high-quality, compliant, and sustainable solutions. Responsibilities: Electrical Design & Technical Leadership * Lead the electrical design of building services systems including LV power distribution, lighting and emergency lighting, small power, earthing and bonding, fire alarm, data/telecoms, and security systems * Prepare and review detailed calculations, specifications, reports, and technical drawings * Undertake and review load assessments, fault level calculations, and cable sizing * Provide technical input from concept through detailed...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 13, 2026  
Multiskilled shift engineer
Multiskilled Operative - Hospital Maintenance | £30ph A leading contractor is looking for a Multiskilled Operative (Mechanical / Electrical / Handyman / Carpentry) to join a hospital maintenance team Start date 16/03/2026 This is an ongoing maintenance position on a secure healthcare site. Shift Pattern (Continental Shift): 12-hour shifts - 6am-6pm (days) / 6pm-6am (nights) 14 shifts per month Rate: £30 per hour (flat rate for days and nights) What you'll do: Fault diagnosis across mechanical, hydraulic, and electrical systems Service, maintenance, and repair of mechanical plant and water systems Basic electrical maintenance and small works General building maintenance, handyman duties, and basic carpentry Water sampling, incubation, flushing, and cooling tower checks Planned preventative maintenance (PPM) and reactive works Working in live environments including hospital wards and critical areas Ensuring all works are completed safely and in line with hospital...
IR35 Status:
Unknown Status

CV-Library West End, London Contractor
CL
Jun 16, 2026  
Commissioning Engineer
Commissioning Engineer - Water & Wastewater Surrey & London (with site travel as required) 45 hours per week Overview We are seeking an experienced Commissioning Engineer to join a major main contractor delivering complex water and wastewater process engineering projects. This role is critical to ensuring safe, compliant, and right‑first‑time installation, testing, and commissioning from design through to handover. You will play a leading role across the full commissioning lifecycle, working closely with design teams, suppliers, subcontractors, and client stakeholders to deliver high‑quality outcomes. Key Responsibilities Commissioning & Technical Delivery Provide full lifecycle commissioning input from design through installation, testing, commissioning, and handover. Develop and implement commissioning plans, procedures, and documentation. Undertake hands‑on commissioning activities across electrical, mechanical, and process systems. Lead and witness FAT and...
IR35 Status:
Unknown Status

CV-Library City of London, London Contractor
CL
Jun 12, 2026  
HVAC Engineer
HVAC Mobile Maintenance Engineer - Mobile Contract, London 🏙️ Are you an experienced HVAC Mechanical Maintenance Engineer looking for a stable opportunity in London? Join our team on a mobile contract with excellent potential for a long-term role! The Role We're seeking skilled engineers to perform planned and reactive mechanical maintenance on HVAC systems across various commercial sites in London. This is a temp-to-perm position, offering a clear pathway to permanent employment based on performance. What You'll Need NVQ Level 2 or 3 in a relevant mechanical/HVAC discipline. Current F Gas Certification (essential). Proven experience in mechanical maintenance, fault finding, and repair of HVAC plant (AHUs, FCUs, pumps, motors, etc.). Full UK Driving License (van provided for work use). Strong communication and customer service skills. Shift Patterns Available Choose the pattern that best suits your lifestyle: Monday - Friday (Standard business hours) 4 on / 4 off...
IR35 Status:
Unknown Status

CV-Library City of London, London Contractor
CL
May 24, 2026  
Electronics Design Engineer (Power Electronics)
We are recruiting for an Electronics Design Engineer (Power Electronics) to join our London-based manufacturing client for a 6-month rolling contract role inside IR35 (through umbrella). As an Electronics Design Engineer (Power Electronics), your overall objective of the role is Design, development, qualification, and documentation of hardware for Power Feeding Equipment (PFE) product. The Electronics Design Engineer (Power Electronics) contributes to the HV side of multidisciplinary PFE engineering teams throughout feasibility, architecture, and detailed design phases, as well as product maintenance and support, while ensuring adherence to industry standards and meeting customer expectations THE SUCCESSFUL APPLICANT * Degree in electrical/electronic engineering; at least 8 years of experience. * Must have end to end HW product development experience involving complex electronics with deep knowledge and strong hands-on experience in: * Power electronics (DC-DC converters up...
IR35 Status:
Inside IR35

CV-Library SE10, Greenwich West, Greater London Contractor
CL
May 24, 2026  
Electronics Design Engineer (HV Design)
We are recruiting for an Electronics Design Engineer (HV Design) to join our London-based manufacturing client in 6-month rolling contract role inside IR35 (through umbrella). As an Electronics Design Engineer (HV Design), you will be responsible for providing high-voltage (HV) design expertise, including creepage and clearance considerations, as well as validation activities. You will assess and develop solutions for HV clearance challenges at the PFE level and within HV switch designs. THE SUCCESSFUL APPLICANT * Degree in electrical/electronic engineering; at least 8 years of experience. * Must have end to end HW product development experience involving complex electronics with deep knowledge and strong hands-on experience in: * Power electronics (DC-DC converters up to 5kW, HVDC systems). * High-voltage engineering (design, validation, standards compliance). * Thermal/mechanical integration for high-power systems. * Experience in electronics design within a regulated...
IR35 Status:
Inside IR35

CV-Library SE10, Peninsula, Greater London Contractor
CL
Jun 12, 2026  
Welding Inspector
Welding Inspector - Rail / Rolling Stock Location: London (Acton) Rate: £47.48 per hour Type: Contract An opportunity has arisen for an experienced Welding Inspector to support inspection and assurance activities on safety-critical rolling stock vehicles and components within a rail engineering environment. The successful candidate will carry out inspections before, during and after welding, ensuring all work complies with the relevant industry standards and quality requirements before assets return to service. Key Responsibilities Conduct welding inspections in line with the Inspection and Test Plan and relevant standards. Perform visual inspection of welds in accordance with ISO 17637. Identify defects and recommend corrective actions to maintain welding quality. Interpret engineering drawings and specifications to ensure fabrication meets required tolerances. Record and investigate non-conformances within the Quality Management System. Compile and complete quality...
IR35 Status:
Outside IR35

CV-Library Brentford, London Contractor
CL
Jun 17, 2026  
Mobile Refrigeration Engineer
Mobile Refrigeration Engineer | Inside M25 | Temp-to-Perm Are you a versatile HVAC pro who thrives on variety? We are looking for high-caliber Mobile Refrigeration Engineers to cover a diverse portfolio of commercial sites inside the M25. From high-end office spaces to critical infrastructure, you'll be the go-to expert for keeping London's climate control systems running at peak performance. This is a Temp-to-Perm role, offering an immediate start for the right candidate and a clear route to a permanent contract. The Requirements To hit the road with us, you must have the following "must-haves": Certification: Valid Category 1 F-Gas (C&G 2079) is mandatory. Qualifications: City & Guilds or NVQ Level 2/3 in Refrigeration & Air Conditioning. Driving: A full, clean driving license (Manual) is essential for this mobile position. Skillset: Comfortable working on VRVs, VRFs, Splits, and associated AHU/FCU plant. Shift Patterns & Package Whether you're a night...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
CL
Jun 17, 2026  
Azure DevOps Engineer
Azure DevOps Engineer +6 months + +Fully remote working +SC cleared role +Sole British nationals only due to nature of the project +Inside IR35 +£600 - £625 a day +Azure certified We're looking for a experienced Azure DevOps professional responsible for architecting, delivering, and operating complex cloud and digital platforms that support large‑scale public sector transformation. Expert in designing and implementing agile delivery pipelines across infrastructure, application, and platform services, with a strong emphasis on reliability, scalability, security, and compliance. Brings deep expertise in Microsoft Azure, Kubernetes (AKS), and modern automation practices to enable seamless, citizen‑focused digital services. Highly effective in resolving critical operational issues, optimizing platform performance, and fostering cross‑functional collaboration to align engineering outcomes with strategic and policy objectives. Passionate about continuous improvement,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 17, 2026  
Senior M365 Engineer/SME
Senior M365 Engineer Location - London Hybrid role - 3 days in Office Type of role - 6 Months Contract with Potential extension Payrate - £450 - £550 per day Inside IR35 One of our clients, which is a leading financial services company, is seeking a Senior M365 Engineer to act as the local Subject Matter Expert (SME) and technical lead for their London division. Partnering with their global US team, you will drive architecture, security, and major migrations, while gaining early exposure to cutting-edge tools like Microsoft Copilot. Key Responsibilities SME Ownership: Provide expert-level design, implementation, and support for Teams, OneDrive, Exchange, and SharePoint. Lead Migrations: Spearhead critical projects including Mimecast-to-M365 and home drive-to-OneDrive migrations. Mail Security & Compliance: Act as the Line 1 security expert focusing on mail flow, routing, EOP, and Proofpoint compliance/e-discovery integrations. Local Governance: Serve as the primary M365...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 17, 2026  
IT Support Engineer
IT Support Engineer – 6 month contract MUST Live in GIBRALTAR! Role Overview VIQU IT are currently looking for an IT Support Engineer who will be responsible for maintaining the stability and day-to-day performance of tombola’s IT systems. Working within the IT Services team, you will provide responsive technical support across infrastructure, applications, and end-user environments. This role requires a structured and analytical approach to problem-solving, with the ability to manage competing priorities in a fast-moving, high-availability environment. You will collaborate closely with technical teams across the business to ensure reliable service delivery, operational continuity, and continuous improvement of systems and processes. For this role you must currently live or have available accommodation in Gibraltar. IT Support Engineers Key Responsibilities Provide hands-on support across end-user computing, applications, and core IT infrastructure, ensuring consistent...
IR35 Status:
Unknown Status

CV-Library London, UK Contractor
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