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Contractor 113
Inside IR35 gas engineer

113 gas engineer jobs found

CL
Jun 21, 2026  
Microsoft Copilot Studio Engineer (PAYE Contract 6 months)
We are looking for a Microsoft Copilot Studio Engineer to design, build, and deliver intelligent conversational solutions that enhance business productivity and user experience. This is an Aberdeen based role and will require a presence in the Aberdeen offices at least 3 days per week for a period of 6 months. Unfortunately the role cannot be worked 100% remotely, Inside IR35 ie PAYE Agency Contract engagement. Start date - Late June/Early July What are we looking for: You will be based in Aberdeen and ideally have experience of the upstream oil & gas sector Proven experience with Microsoft Copilot Studio (or Power Virtual Agents) and the Microsoft Power Platform, including Power Apps, Power Automate, and Dataverse. You will have experience designing and building conversational agents, including intents, topics, generative AI capabilities, and integrations. Strong understanding of governance, security, and compliance considerations within the Power Platform ecosystem. A...
IR35 Status:
Inside IR35

CV-Library Aberdeen, UK Contractor
CL
Jun 18, 2026  
Lead Mechanical Engineer
This is an opportunity for a Lead Mechanical Engineer to join a Joint Venture Project Management Team during the pre-FEED of a $ multibillion project. Acting on behalf of the JV, the role provides technical input to ensure the facilities scope is specified safely, operably, and cost-effectively. The Lead Mechanical Engineer collaborates across disciplines and communicates key concepts to both project management and the contractor, with a pre-FEED focus on capital cost optimisation, risk management, and efficient execution. Candidates must have demonstrable experience, in a lead capacity, of static equipment across pressure vessels, columns, towers, reactors and internals, including high-alloy, high-pressure / heavy-wall equipment, heat exchangers, large-bore / high-alloy process & utility piping, storage tanks / vessels and cryogenic cold boxes, with working awareness of equipment used in downstream refining / chemicals e.g. hydro-processing, sour gas treatment, ethylene...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 18, 2026  
Section Engineer
Opportunities, inside IR35, are available for skilled Section Engineers, who have progressed from Site Engineering delivering major multimillion infrastructure project for tier one civil engineering contractors. Previous experience on nuclear, power stations, energy plants or any other major industrial project, would be advantageous. Key Responsibilities: Manage the setting out and as-built records Support the Site engineering team in all of their duties. Support the coordination of materials, equipment, and workforce on site Deliver clear and timely updates on project progress and performance Prepare and manage quality assurance documentation including ITPs, inspections, NCRs, and TQs Maintain site diaries and project records Assist with weekly planning and performance tracking (KPIs) Contribute to safety documentation including RAMS, temporary works briefs, permits, and incident reports Oversee weekly commercial reporting including waste management Reconcile...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Jun 21, 2026  
Junior Connected Services Validation Engineer
Junior Connected Services Validation Engineer - JP1006 - from £23.47/hr PAYE rate Step into an exciting opportunity as a Junior Connected Services Validation Engineer and be part of a role that combines innovation, collaboration, and cutting-edge technology. This position offers the chance to work in a dynamic industry, where your contributions will directly impact the future of connected vehicle technology. With a competitive hourly rate of £23.47 - £27.94 PAYE (dependent on experience) and the chance to immerse yourself in a forward-thinking environment, this role is ideal for someone looking to grow their career while working on groundbreaking projects. What You Will Do: - Perform end-to-end vehicle validation for connected car services using mobile and smartwatch platforms. - Prepare and ensure availability of required test resources prior to validation execution. - Raise and track incident tickets in the incident management system through to closure. - Assist in triage...
IR35 Status:
Inside IR35

CV-Library Milton Keynes, UK Contractor
CL
Jun 21, 2026  
Lead Civil Engineer
Job Title: Lead Civil Engineer Rate: £50 - £60 per hour (dependent on experience) Location: Birmingham / Glasgow / Chester / Leeds (Flexible UK base / hybrid) Type: Contract - Inside IR35, Hybrid About the Role: Our client is seeking Lead Civil Engineers to join their Delivery group, working on non-infrastructure UK water engineering projects. You will act as a technical specialist and/or in a lead role, developing and applying advanced engineering techniques, while guiding project teams to deliver high-quality outputs. About the Client: Our client is part of a global engineering and environmental group, delivering projects in over 100 countries. They combine innovation, sustainability, and technical excellence, offering employees opportunities to work on exciting projects worldwide while supporting flexible and hybrid working patterns in the UK. Key Responsibilities: Provide guidance on design guides, standards, systems, and engineering codes. Prepare calculations and...
IR35 Status:
Inside IR35

CV-Library Birmingham, West Midlands Contractor
CL
Jun 21, 2026  
Senior Civil Design Engineer
Job Title: Civil Engineer Salary: £50 - £60 (dependent on experience) Location: Reading Type: Contract - Inside IR35, hybrid working About the Role: Our client is seeking a Civil Engineer with 5+ years' experience who is ready to hit the ground running. You'll work closely with a senior engineer on a diverse portfolio of projects, including large-scale civil schemes and complex mechanical and electrical designs. Your work will cover design development and, when design work slows, involvement in project management and commercial activities. This role offers significant development opportunities due to the breadth of experience it provides. About Our Client: Our client is a well-established engineering organisation delivering innovative and complex infrastructure projects across the UK. They value versatility, technical expertise, and the opportunity for engineers to develop across multiple disciplines. Key Responsibilities: Design development across civil, mechanical, and...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 21, 2026  
Network Engineer (Cisco SD-WAN)
Network Engineer (Cisco SD-WAN) – 6 Month Initial Contract – Fully Remote VIQU are supporting a major enterprise organisation undergoing a large-scale network transformation and consolidation programme. They are seeking a Network Engineer to support the rollout of SD-WAN across numerous new sites, with a further rollout planned across existing locations. The successful Network Engineer will focus on the hands-on implementation of SD-WAN and network migration activities within a predominantly Cisco-based environment. Key Responsibilities Implement Cisco-based SD-WAN solutions across c.50+ sites, with additional rollout phases to follow Configure and deploy SD-WAN edge devices, circuits, and network infrastructure components Support migration from legacy WAN providers into a consolidated managed service environment Work to deliver against HLD/LLD designs during implementation phase Operate within a co-managed model, taking ownership of configurations, changes, and fixes where...
IR35 Status:
Inside IR35

CV-Library Leeds, UK Contractor
CL
Jun 21, 2026  
Test Manager
On behalf of our client, we are looking for a Test Manager to join them on a 12 -month contract. As the Test Manager you will be accountable for defining the test approach to meet the Customer requirements and managing the team to deliver against this approach. You will be training other engineers and leading by example. Role: Test Manager Pay: £60.00 per hour via Umbrella Contract: Monday to Friday, 37 Hours a week, 12 months contract Location: Portsmouth IR35: Inside SC Clearance: SC Clearance, Uk Eys only project Responsibilities Using appropriate tools and techniques verify and validate deliverables to standards defined in the BMS and specification requirements. Be aware of technological/engineering developments and issues in industry and interact with the Engineering Management to continuously improve Engineering. Manage production of test and verification strategies/plans which minimise risk by confirming validity of the technical solution as early/cost effectively as...
IR35 Status:
Inside IR35

CV-Library Portsmouth, Hampshire Contractor
CL
Jun 21, 2026  
Senior Civil/Structural Engineer
Role: Senior Civil/Structural Engineer Location: Devonport(once in a month) Duration: 12 months Inside IR35: Umbrella The primary purpose of the role is to ultimately assist and support the Design Manager in the delivery of project scope. This will include the likes of the following; To undertake the delivery of civil / structural engineering work packages to the required scope, quality, schedule and cost. Responsible for managing the technical aspects of the engineering packages from identification of the need, through to handover. Support the Engineering Lead with one or more technical design packages agreeing project related objectives, working alongside design Support Teams and providing appropriate technical responses. Provide advice as per discipline. Ensure that the design documentation covers the scope of operations required by the Project Manager and is produced to agreed standards, schedule, and budget. Ensuring effective Quality Management Arrangements, operate and...
IR35 Status:
Inside IR35

CV-Library Plymouth, Devon Contractor
CL
Jun 21, 2026  
Mechanical Engineer - Certification & Validation
Mechanical Engineer - Certification & Validation Location: Stevenage (Hertfordshire) Duration: 6 months (extension possible) Rate: £50 p/h Umbrella IR35: Inside Clearance: SC (BPSS to start possible) / UK Eyes Only (UKEO) Working pattern: 2 days minimum onsite, remainder remote Overview An opportunity to become part of Europe's No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional teams, to develop products to meet our customer's needs. Within this role you will have the opportunity to work as part of a multi-disciplinary team to work on the certification and validation activities to allow a new product to be delivered into service with international customers. Responsibilities: Support the Mechanical Certification Lead Engineer on generating evidence statements against Mechanical Requirements. * Interpreting Test reports from subsystem, inert and live munition testing * Interfacing with the Systems team,...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Jun 21, 2026  
Quality Conformance Engineer
Our client has an opportunity for a Quality Conformance Engineer to join them on a contract basis until the end of 2026. You will ensure the focus & priority given to Production Organisation Approvals (POA) activities to ensure there is a very high level of Product Safety. Role: Quality Conformance Engineer Location: Broughton, fully onsite Hours: 35 hours per week. Rotating week of mornings - 6:00am - 1:10pm, Week of afternoons - 1:30pm - 8:40pm Hourly Rate: £32.96 per hour via an Umbrella company, inside IR35 + 20% shift uplift when working shifts Clearance: BPSS required before starting What you'll be doing: Application and deployment of APQP and Quality Standards Support & Facilitate Failure Mode & Effect Analysis (FMEA) in Design, Process & Machine Create & update Control Plans (CPs) to incorporate modifications as required Plan & execute Production Process Verification (PPV) to ensure validation of all routings Lead Cost of Non-Quality...
IR35 Status:
Inside IR35

CV-Library Broughton, Flintshire Contractor
CL
Jun 21, 2026  
Lead Infrastructure Automation Engineer (on perm and Cloud)
Job title: Lead Infrastructure Automation Engineer (on perm and Cloud) Contract: 6 Months -possibility for extension Location: London HEX - 3 days a week Rate: Competitive day rate (Inside IR35) Working pattern: Full time Are you ready to take the lead in revolutionising infrastructure automation? Our client, a dynamic and innovative organisation, is on the lookout for a passionate Infrastructure Automation Engineer Lead - VP to spearhead their ambitious automation initiative across all infrastructure functions. This is your chance to drive significant change and enhance the efficiency of global operations! ### About the Role: As the Infrastructure Automation Engineer Lead, you will play a pivotal role in accelerating the adoption of infrastructure-as-code and automation solutions. Your expertise will help shape modern tooling strategies, ensuring scalable and repeatable automation solutions across various infrastructure domains. ### What We're Looking For: Expertise in...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 21, 2026  
Software Test Engineer
World Class Defence Organisation is currently looking to recruit a Software Test Engineer subcontractor on an initial 12 month contract. Rate: £65.00 per hour Location: Stevenage Hybrid / Remote working: 4 days a week likely onsite.  A compressed 4 day week (Monday to Thursday) a possibility. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Software Test Engineer Job Description: An exciting opportunity to work as a Software Testing Engineer within the Environment Simulators team based in our Stevenage office with our simulation developers.  The Simulation Software department is at the forefront of developing simulations for the Weapon System and sub-systems teams using the full development life cycle and agile methodologies.  Our simulations follow best practices and capability to ensure our products...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 20, 2026  
Software Engineer (SC Cleared)
Software Engineer (Python / React) 📍 Cheltenham Area - on site Contract: Inside IR35, 12 months+ The Opportunity We are seeking talented Software Engineers to join a cutting-edge programme supporting UK Intelligence customers. These roles focus on building modern, cloud-native applications and services that enable the operational use of AI and data-driven capabilities. While detailed job specifications are still being finalised, the mission, technology stack, and innovation culture make this a highly compelling opportunity. What You'll Be Doing As a Software Engineer, you will: Develop user-facing applications, APIs, and backend services Build solutions using technologies such as: Python FastAPI React Enable the integration and operational use of AI and data-driven capabilities Contribute to scalable, cloud-native application developmentYour work is expected to span across: Artificial Intelligence Machine Learning Natural Language Processing (NLP) Cloud-native...
IR35 Status:
Inside IR35

CV-Library Cheltenham, Gloucestershire Contractor
CL
Jun 20, 2026  
Suspension Engineer
Order Ref: (phone number removed) Position Title: Suspension Engineer Duration: Contract - 10 months Location: Gaydon Rate: £28.43 per hour (Inside IR35) Duties: Reporting to the Axle Function & Integration Chapter Leader, this role requires an individual to support the delivery of the design of the suspension/axle concept and associated CAD geometry to meet the agreed timing for multiple nameplates off a platform. Key Accountabilities and Responsibilities: Support the development of the Axle CAD concept and integration of corner modules and axle links into subframes and rest of vehicle for all vehicles across a platform Respond to work requests and follow technical direction, methods and processes provided by the Solution Architect, in order to complete programme deliverables Create suspension layout studies and check packaging including consideration of kinematics, dynamic envelopes (e.g. wheel envelope), compliances, tuning and component variability Generate...
IR35 Status:
Inside IR35

CV-Library Warwick, Warwickshire Contractor
CL
Jun 20, 2026  
Technical 3D Artist
Technical 3D Artist Company: Envisage Recruitment Ltd. Location: Gaydon, Warwickshire (Hybrid: Typically 3 days on-site,) Employment Type: 12-Month Contract (with potential for roll-over) Hours: 40 hours per week Pay Rate: £35.58 per hour (Gross, Umbrella / Inside IR35 status to be confirmed via CEST) About the Role: Envisage is seeking an experienced, highly technical 3D Artist to bridge the gap between creative design vision and software implementation. In this role, you will act as the critical conduit between our software development and design teams, translating high-level design concepts into optimized, working 3D models ready for real-time deployment in our luxury vehicles. You must possess the rare balance of elite creative artistry and a deep technical understanding of real-time asset limitations, rigging, and engine optimization. Key Duties & Responsibilities: Convert complex design visions into functional, fully developed 3D models optimized for...
IR35 Status:
Inside IR35

CV-Library Gaydon, Warwickshire Contractor
CL
Jun 20, 2026  
Technical Architect
MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. TECHNICAL ARCHITECT - 12 MONTH CONTRACT - UP TO £800 PER DAY - INSIDE IR35 - READING (2 DAYS ON-SITE) - SECTOR: DEFENCE / GOVERNMENT As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. Lead technical design of large-scale, complex systems Define and govern solution architecture and technical designs Ensure alignment with security, performance, scalability, and compliance standards Work closely with engineering, delivery, and business stakeholders Provide technical governance, assurance, and risk evaluation Design...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 20, 2026  
Mechanical Design Engineer
Mechanical Design Engineer 12 month contract Based in Stevenage Offering £50ph Inside IR35 Do you have experience using CREO? Do you have experience carrying out mechanical design and proving activities? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Mechanical Design Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. You will be involved in: Carry out Mechanical Design and proving activities as part of a wider team for prime and variant products, of both piece parts and assemblies Support/liaise with manufacturing, resolving manufacturing problems & defects Support the functional & environmental testing and trials Liaise with suppliers/purchasing to...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Jun 20, 2026  
Mechanical Engineer – Certification & Validation
World Class Defence Organisation is currently looking to recruit a Mechanical Engineer – Certification & Validation subcontractor on an initial 6 month contract. Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: 2 days a week onsite, the rest working remotely from home. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Engineer – Certification & Validation Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional teams, to develop products to meet our customer’s needs. Within this role you will have the opportunity to work as part of a multi-disciplinary team to work on the certification and validation activities to allow a new product to be delivered into...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 20, 2026  
BI Engineer / AWS Engineer - AI / ML
I am recruiting for a BI / AWS Engineer to work on a remote basis with occasional travel to London or Swindon (once a month). The role falls inside IR35 so you will be required to work through an umbrella company for the duration of the contract. I am searching for an experienced Business Intelligence Engineer / AWS Data Engineer to support the development of a modern data platform and contribute to emerging AI-driven initiatives. This role will suit someone with a strong foundation in AWS data engineering and BI, alongside practical exposure to AI/ML concepts or tools. You must have strong hands-on experience in: AWS Data Engineering stack (e.g. Glue, S3, Lambda, Redshift, Athena) SQL (advanced level) Python (for data processing and pipeline development) Infrastructure / tooling exposure (e.g. Terraform, APIs, CI/CD beneficial) Experience working in Business Intelligence / analytics environments Candidates must demonstrate some level of exposure to AI/ML, such as: Working...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
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