20 mechanical commissioning technician jobs found

Mechanical Commissioning Technician (Contract) Location: Reading Contract Length: 6 months IR35 Status: Inside IR35 Working Pattern: Full-time, Site-Based Shift Pattern: 11 Shifts On, 3 Shifts Off Per Diem Allowance: £100 per day Umbrella - Payable for each day travelled to site for workers residing more than 30 miles from site. Important: This role will initially be based on day shifts but is expected to transition to a night shift pattern during the assignment. Security & Eligibility Requirements Candidates must be eligible to obtain Security Clearance (SC). Candidates may commence employment under BPSS clearance, provided SC clearance is actively in progress. Applicants must have lived and worked in the UK continuously for the previous 5 years to satisfy security clearance requirements. A valid CSCS or ECS card is required prior to commencement. The Opportunity Cavendish Nuclear is seeking experienced Mechanical Commissioning Technicians to support a major...

Order Ref:                    (phone number removed)                                                                      Position Title:              Senior Test Technician                                    Duration:                      Contract                                                                      Location:                      Warwick *Applicants MUST have proof of immediate, on-going and valid eligibility to work full time in the UK and travel within the EU.* Inside IR35 £28.43 Per hour Key Responsibilities: Lead the day‑to‑day operation of multi‑cylinder engine testbeds, ensuring safe, test‑ready rigs through routine test cell checks and the installation and validation of instrumentation and equipment. Support engineers with steady‑state, transient, emissions, calibration, and durability test activities. Perform first‑line diagnosis and troubleshooting for mechanical, electrical, rig, and measurement issues. Operate AVL PUMA, ETAS INCA, and related...

Principal Mechanical Engineer Hybrid with occasional visits to the office Location - Manchester OR London OR Newcastle OR Glasgow Contract role - 6 months rolling Inside IR35 - £58 / hour Umbrella A Principal Mechanical Engineer is required to join a design consultancy on a 6-month rolling contract. The role is hybrid and predominantly home based, but you must be willing to occasionally travel to either Manchester, London, Newcastle or Glasgow (dependent on your location). This role will be working in the Energy Transition industry working on low-carbon projects from early-stage development through construction, operation and eventual decommissioning, currently focusing on power plant projects. Responsibilities Developing cost-effective, practical mechanical engineering solutions to complex problems Producing calculations, equipment specifications and datasheets for turbines, compressors, pumps, pressure vessels and heat exchangers Collaborating with process engineers on...

Principal Mechanical Engineer Hybrid with occasional visits to the office Location - Manchester OR London OR Newcastle OR Glasgow Contract role - 6 months rolling Inside IR35 - £58 / hour Umbrella A Principal Mechanical Engineer is required to join a design consultancy on a 6-month rolling contract. The role is hybrid and predominantly home based, but you must be willing to occasionally travel to either Manchester, London, Newcastle or Glasgow (dependent on your location). This role will be working in the Energy Transition industry working on low-carbon projects from early-stage development through construction, operation and eventual decommissioning, currently focusing on power plant projects. Responsibilities Developing cost-effective, practical mechanical engineering solutions to complex problems Producing calculations, equipment specifications and datasheets for turbines, compressors, pumps, pressure vessels and heat exchangers Collaborating with process engineers on...

Principal Mechanical Engineer Hybrid with occasional visits to the office Location - Manchester OR London OR Newcastle OR Glasgow Contract role - 6 months rolling Inside IR35 - £58 / hour Umbrella A Principal Mechanical Engineer is required to join a design consultancy on a 6-month rolling contract. The role is hybrid and predominantly home based, but you must be willing to occasionally travel to either Manchester, London, Newcastle or Glasgow (dependent on your location). This role will be working in the Energy Transition industry working on low-carbon projects from early-stage development through construction, operation and eventual decommissioning, currently focusing on power plant projects. Responsibilities Developing cost-effective, practical mechanical engineering solutions to complex problems Producing calculations, equipment specifications and datasheets for turbines, compressors, pumps, pressure vessels and heat exchangers Collaborating with process engineers on...

Your new company You will be working for a well-known organisation who are based in Telford. The requirement will be to be on-site 2 days a week. The role is a 6 month contract and active SC Clearance is required for this role. This role is inside scope of IR35. Your new role Role PurposeThe DWIT Lead Architect is accountable for leading architecture teams responsible for documenting existing data feeds, assessing their transformation to AWS, and defining safe decommissioning strategies for legacy services. The role provides technical leadership, architectural control and delivery alignment across feed discovery, legacy estate analysis, target-state design and migration planning. It ensures that current services are properly understood, documented and prioritised before transformation decisions are made.Context. DWIT is undertaking a significant transformation of existing data feeds and legacy services onto AWS. The work requires disciplined discovery, consistent documentation,...

Operational Technology (OT) Field Engineer - Water Warrington | United Utilities Projects £35-£45 per hour (Inside IR35) Initial 6-Month Contract (12+ Months of Work Available) An exciting opportunity has arisen for an experienced Operational Technology (OT) Field Engineer to join a leading engineering consultancy delivering major United Utilities infrastructure projects across the Northwest. This OT Field Engineer role is ideal for someone with a strong background in Instrumentation, Control & Automation (ICA) who enjoys working across operational technology, field surveys and site delivery. You'll initially support the United Utilities Event Duration Monitoring (EDM) Programme, carrying out asset surveys across approximately 270 sites, before progressing onto a wider portfolio of Operational Technology projects. The successful OT Field Engineer will play a key role in delivering water and wastewater infrastructure projects, supporting the design, commissioning and...

This role would see you at the heart of the design and assurance of Containment Level 3 & 4 laboratories and other sensitive government facilities - a chance to apply your expertise where it directly supports national security and critical assets. Key aspects of the role Provide specialist security engineering advice for high‑containment laboratories and other secure government buildings. Review and shape perimeter security, including Hostile Vehicle Mitigation, and recommend targeted enhancements. Lead and support security risk assessments, threat analyses and vulnerability studies for high‑risk environments. Develop, review and assure security design documentation (protective security strategies, technical specifications, assurance reports). Work closely with architects, engineers and programme teams to embed security throughout the project lifecycle. Ensure compliance with relevant legislation, standards and security frameworks. Advise on digital engineering security,...

Job Title: Built Asset Security Advisor - SC Location: Hybrid, Porton Down, Salisbury  (2-3 Days p/w in the office) Contract Duration: 12 Months Daily Rate: £681.16/day (Umbrella – Maximum) IR35 Status: Inside Security Clearance: SC My client is seeking an experienced Project Security Adviser/Built Asset Security Advisor  to provide expert security engineering and protective security advice across a portfolio of high-security facilities and infrastructure projects. This role will support the design, development, review, and assurance of secure environments, including Containment Level 3 and 4 laboratories and other sensitive government facilities. The successful candidate will work closely with multidisciplinary teams to ensure security requirements are embedded throughout the project lifecycle, helping to safeguard critical national assets and maintain compliance with relevant legislation, standards, and industry best practice. Key Responsibilities Provide specialist security...

Your new company You will be working for a well-known organisation based in Telford. The requirement will be to be on-site 2 days a week. This is a 6-month contract and inside scope of IR35. Active SC Clearance will be required for this role. Your new role Role PurposeThe DWIT Data Architect is responsible for producing the detailed analysis, documentation and architecture artefacts needed to support the transformation of existing data feeds to AWS and the planned decommissioning of legacy services.The role works under the direction of Lead Architects, turning complex legacy information into clear, structured and delivery-ready outputs. It is a hands-on role focused on feed discovery, dependency analysis, documentation quality, option development and practical support to migration and decommissioning planning.ContextDWIT is undertaking a significant transformation of existing data feeds and legacy services onto AWS. The work requires disciplined discovery, consistent...

Solution Architect 1-2 days a week in Sheffield Initial 6-month Contract £700 - £800 p/day | Inside IR35 We're recruiting for a Global IT Services Provider seeking a Solution Architect to design end-to-end technical solutions aligned to operational resilience regulations and internal frameworks. Key Responsibilities: Create resilience-focused HLDs/LLDs aligned with enterprise architecture and cloud strategy Translate Operational Resilience and DORA requirements into actionable designs Act as a design authority for resilience initiatives, reviewing and approving technical designs Provide architectural input into programmes including technology modernisation, cloud migration and system decommissioning Documentation & ReportingRequirements: 6+ years as a Solution Architect with proven experience working in a large enterprise bank within the past 3 years' (essential) Experience across one or more of the following - Operational Resilience, Business Continuity, Disaster...

THIS ROLE IS INSIDE OF IR35, AND PAYE ONLY. 4 DAYS IN BARROW IS MANDATORY.  The Maintenance Spares & Repairs Lead is responsible for ensuring the availability, integrity, and lifecycle management of maintenance spares and repairable equipment to support safe, reliable, and compliant asset operations.   The role ensures that critical spares, repair strategies, and inventory controls are aligned with asset criticality, maintenance strategies, and regulatory requirements, while balancing operational risk and total cost of ownership. Key role deliverables: ·        Maintain spares and repair strategies aligned with maintenance and asset integrity requirements, ensuring spares strategies support whole‑life value and sustainability objectives. ·        Define and manage spares philosophies for safety critical elements; production‑critical equipment; obsolescence and life‑extension scenarios. ·        Ensure alignment with regulatory, Safety Case, SEMS, COMAH and company standards....

Quantity Surveyor - Decommissioning Projects Abingdon / Culham Site (Hybrid - 3 Days On Site) £55-65/hour Inside IR35 12-Month Contract We're supporting a major UK nuclear and fusion programme and are looking for an experienced Quantity Surveyor to join a high-profile decommissioning portfolio delivering technically complex construction and infrastructure projects. This is an opportunity to work at the forefront of the UK's clean energy and scientific innovation sector, supporting large-scale decommissioning and construction activities within a highly regulated environment. You'll play a key role in commercial delivery, cost control, procurement strategy, NEC4 contract administration, and risk management across projects valued in excess of £20m. What You'll Be Doing: * Leading QS activities across complex construction and decommissioning projects * Preparing cost estimates, benchmarking exercises, and feasibility studies * Supporting procurement strategy, tender...

Our client a well established and well known business within the Nuclear setor are currently looking to hire a Waste Engineer/Package Manager to be part of a busy project based in Culham, Oxforshire on a contractual basis. This is an exciting opportunity for an experienced Waste Engineer to play a key role in the Decommissioning & Repurposing Programme. Working within a highly regulated nuclear environment, you will lead waste engineering activities across major decommissioning projects, ensuring safe, compliant and cost-effective waste management solutions. Job Title: Waste Engineer/Package Manager Duration: 12 Months Location: Culham, Oxfordshire Working Week: 4 Days Per Week Onsite Rates: Competitive Hourly Rates - Inside IR35 Key Responsibilities: Develop and deliver waste management strategies for decommissioning projects. Lead waste characterisation activities, including DQOs, WSAPs and sampling campaigns. Identify suitable treatment, recycling and disposal routes for...

CE&I Design Engineer - nuclear £46-£51 per Hour (Inside IR35) | Long-Term Contract | Sellafield | Full-Time On Site Shape the Future of UK Nuclear Infrastructure Are you an experienced Control, Electrical & Instrumentation (CE&I) Design Engineer looking to work on one of the UK's most technically challenging nuclear programmes? We're seeking a talented engineer to join a multidisciplinary team delivering high-quality CE&I design solutions across major Sellafield projects. This is a fantastic opportunity to play a key role in developing engineering designs that support the safe operation, refurbishment and decommissioning of critical nuclear facilities. If you thrive in a highly regulated environment and enjoy solving complex engineering challenges, this role offers the chance to make a real impact. The Role As a CE&I Design Engineer, you'll be responsible for producing and developing engineering designs from concept through to detailed design, ensuring...

CE&I Control System Design Engineer - PES-Based Control Systems Warrington | Hybrid - 3 days on site £51-£56/hour | Inside IR35 Are you a CE&I Control System Design Engineer with strong experience in Programmable Electronic Systems (PES)? This is an excellent opportunity to join the Silos MSSS SEP 1 & 2 programme, contributing to a nationally significant, safety-critical project within a highly regulated environment. You'll be embedded within the CE&I design team, focused on the design, update and verification of PES-based control systems. While implementation, testing and commissioning are delivered by dedicated site teams, your work will be fundamental in ensuring designs are robust, compliant and ready for safe delivery. The Role You will be responsible for: Delivering and checking PES-based Control System designs and updates to meet functional and business requirements Supporting other engineers in the delivery of high-quality CE&I design outputs...

SharePoint Administrator (Document Architect) Culham, Oxfordshire | Hybrid Working 0.5 days/fortnight on site £35-£41 per hour | Inside IR35 | 12-Month Contract Shape the Information Backbone of a Major UK Nuclear Programme Are you an experienced SharePoint Administrator, Document Architect or Document Control professional with a passion for creating efficient, compliant information management systems? We're looking for a SharePoint Administrator (Document Architect) to join a major UK nuclear decommissioning programme, where you'll play a vital role in designing and managing the SharePoint environment that underpins project delivery. This is more than document control-it's an opportunity to build the information management framework that enables collaboration, governance and compliance across one of the UK's most significant engineering programmes. The Role You'll be responsible for designing and implementing a robust SharePoint-based document management system that...

Package Manager - Civils/Structural Engineering (Facility Integration & Requirements Management) Culham, Oxfordshire | Hybrid (3 Days On Site) £55-£60 per hour | Inside IR35 | 12-Month Contract Play a Key Role in the Future of UK Fusion & Nuclear Decommissioning An exciting opportunity has arisen for an experienced Package Manager to join a major UK fusion and decommissioning programme, supporting the development of critical infrastructure that will enable the safe handling, packaging and management of radioactive materials. Working as part of a high-profile engineering team, you'll lead the integration and early-stage development of a complex facility adaptation project, bringing together engineering, civils, building services, operations and stakeholder requirements to shape the future delivery strategy. This is an ideal opportunity for someone who enjoys solving complex engineering challenges, coordinating multidisciplinary teams and influencing major infrastructure...

Package Manager - Waste Engineering Culham, Oxfordshire | Hybrid (3 Days On Site) £55-£60 per hour | Inside IR35 | 12-Month Contract Lead Waste Engineering on One of the UK's Most Innovative Decommissioning Programmes We're looking for an experienced Waste Engineer or Package Manager to play a pivotal role in the JET Decommissioning and Repurposing (JDR) Programme. This is an exciting opportunity to lead waste engineering activities across complex nuclear decommissioning packages, helping to safely decommission facilities, plant systems and major components while ensuring full compliance with environmental and regulatory requirements. If you have a background in radioactive waste management, waste characterisation or nuclear decommissioning and want to work on a nationally significant programme, we'd love to hear from you. The Role As Package Manager - Waste Engineering, you'll take ownership of waste engineering activities throughout the project lifecycle, developing waste...

C&I Wire Person / Panel Builder Employer: UK Atomic Energy Authority Location: Culham Campus, Abingdon, Oxfordshire Contract: 1 year (Inside IR35) Rate: £26.00 per hour (Umbrella) Work Type: Full-time, onsite About the Role We are seeking a skilled C&I Wire Person / Panel Builder to support operations at the MAST-U facility, a leading experimental fusion research environment. This hands-on role involves working across multiple engineering teams, supporting a wide range of control and instrumentation systems. You will split your time between workshop-based panel building and on-plant industrial work, contributing to the construction, testing, fault-finding, and repair of critical systems. Key Responsibilities * Build, assemble, and wire control & instrumentation panels, cubicles, sub-racks, and electronic systems * Carry out fault-finding, diagnostics, and repairs on C&I systems (with and without formal test procedures) * Perform bench testing and...