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Contractor senior design engineer

188 senior design engineer jobs found

CL
Jun 20, 2026  
CE&I Senior Design Engineer
CE&I Senior Design Engineer Altrad are currently seeking a CE&I Senior Design Engineer to join the Central Engineering team as part of the Silos MSSS SEP1 & 2 CE&I Design Team. The successful candidate will provide site-based design front-line support to Commissioning teams, delivering, supporting the delivery of others, and checking detailed designs/changes to meet functional and business needs. Implementation, testing, and commissioning of the designs are undertaken by other dedicated site-based teams and are outside the scope of this role. Key Deliverables * Provide site-based front-line design support to Commissioning teams. * Deliver, support the delivery of others, and check detailed designs/changes for accuracy and compliance with functional and business requirements. * Ensure all designs/changes adhere to relevant external and company-specific engineering standards. * Collaborate effectively with multidisciplinary teams on site and in the...
IR35 Status:
Unknown Status

CV-Library Sellafield, Cumbria Contractor
CL
Jun 19, 2026  
Site Based CE&I Senior Design Engineer
Site‑Based CE&I Senior Design Engineer Location: North West Hours: 37 hours per week Security Clearance: SC required (must already hold or be eligible) The Role We are seeking a Senior Control, Electrical & Instrumentation (CE&I) Design Engineer to provide site‑based, frontline design support to commissioning teams on a highly regulated, safety‑critical facility. This is a hands‑on senior design role, embedded at plant level during commissioning, where issues are identified, investigated and resolved through robust engineering judgement and controlled design change. The role is not focused on routine programming or implementation. Dedicated site teams carry out testing, installation and commissioning activities. Your responsibility is to diagnose problems, develop design solutions, and ensure changes meet functional and business requirements. Key Responsibilities Provide frontline CE&I design support to commissioning teams during active commissioning....
IR35 Status:
Unknown Status

CV-Library Cumbria, UK Contractor
CL
Jun 28, 2026  
Senior HVAC Design Engineer
Data Centres are crucial components of today's infrastructure, supporting everything from business to public services. The Opportunity Join our international and multidisciplinary team of passionate design engineers and help us create high-quality, sustainable, and innovative data centre structures. You will work on medium to large-scale mission-critical projects, covering all stages of design - from concept to construction supervision and handover. As a Senior Mechanical Engineer your role will be as part of an interdisciplinary team lead the design of mechanical systems (Building servies and cooling) on medium to large-scale Mission Critical projects through all design stages from Concept to Construction Supervision and Hand-Over Lead the preparation and review of design deliverables Lead projects and work closely with our data centre clients to deliver quality work to meet their specific needs Present technical content for review by technical and non-technical...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 28, 2026  
Senior Mechanical Design Engineer
Senior Mechanical Engineer - Water Sector St Albans: Hybrid (3 Days Office) Contract: £45-£50/hr (Outside IR35) Advance TRS are supporting a rapidly growing consultancy in their search for a Senior Mechanical Engineer. Joining a newly formed London business unit, you'll have the unique opportunity to help build a team from the ground up, influence how projects are delivered, and play a significant role in the future growth of the business within the UK water market. You'll lead the mechanical design of clean water and wastewater projects, producing high-quality engineering solutions while mentoring junior engineers and coordinating multidisciplinary design teams. Key Responsibilities: * Deliver mechanical design solutions for water and wastewater projects * Produce calculations, reports, specifications and design drawings * Lead and review work from junior engineers and CAD technicians * Coordinate with suppliers, manufacturers and subcontract design teams * Ensure designs...
IR35 Status:
Outside IR35

CV-Library Hertfordshire, UK 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 21, 2026  
Senior Chassis Design Engineer
Position Title: Chassis Engineer Duration: Contract Location: Newark, California USA Essential Criteria: Chassis Engineer Summary: The main function of a Design Engineer is to research and investigate the design, functionality and maintenance of mechanical products, equipment, systems and processes. A typical design engineer has the ability to make engineering drawings, and read and interpret blueprints. Job Responsibilities: Research, design, develop, manufacture, and test tools, engines, machines and other mechanical devices. Research and analyse customer design proposals, specifications, manuals to determine time and cost feasibility to complete projects. Assist drafters in developing the structural design of products using tools, equipment or software. Skills: Creativity, verbal and written communication skills, analytical and problem solving ability. Team player and detail oriented. Ability to make sketches, engineering drawings and common computations....
IR35 Status:
Unknown Status

CV-Library Newark, California 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  
Senior Control System Design Engineer
NES Fircroft are partnering with our major Engineering & Services client to provide a Senior Control Systems Design Engineer for a major Nuclear project. Long-term project with potential for 3+ years work. Mon-Fri minimum 37hrs per week. Hybrid working available 3 days in Warrington office per week, with occasional visits to site in Cumbria if necessary.  Overview of the Senior Control Systems Design Engineer: To work within the end client's design team, leading a team of Programmable Electronic System (PES) based Control System Design Engineers delivering, supporting others delivering and checking designs/updates to meet functional and business needs.  The procurement, integration, installation and commissioning of the designs/updates is undertaken by others, hence is outside the scope of this particular role.     Essential: Academic Qualification: Minimum - HNC Professional Qualification: Minimum - Incorporated Engineer Experience of SCADA/PLC control systems and...
IR35 Status:
Unknown Status

CV-Library Warrington, UK Contractor
CL
Jun 17, 2026  
Senior Electrical Design Engineer
Working with this busy engineering solutions provider who have a strong order book with schemes across the TFL estate - they are looking for an Electrical Design Engineer to join there multi-disciplinary design team Your role will involve: - Creating LV electrical designs for station work, including lighting and power systems. - Problem-solving to integrate new designs with legacy infrastructure. - Working closely with the wider design and CAD teams. The position is ideally suited for someone who: - Is an experienced practically minded electrical design engineer - Understands the practical challenges of electrical installation and buildability. - Can problem-solve on the spot when faced with non-standard site issues. You should have experience in RAIL/ LU (TFL) Standards Role is outside IR35 Your expert recruitment consultant is Trevor Parsons, call today on (phone number removed) or email (url removed) Eden Brown is committed to equality in the...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 13, 2026  
Senior Product Design Engineer
Role: Senior Product Design Engineer Location: London Contract Type: Contract / Freelance Duration: 6 months + Rate: £315 per day Status: Outside IR35 - Ltd co contract Shape Innovative Products from concept to reality. An exciting opportunity has arisen with a highly respected product innovation consultancy known for delivering cutting-edge solutions across healthcare, consumer, and industrial sectors. Working within a collaborative, multidisciplinary environment, you will play a pivotal role in transforming ideas into commercially successful, production-ready products. This is an ideal opportunity for an experienced Product Design Engineer who thrives on solving complex engineering challenges, balancing creativity with technical rigour, and leading projects from research through to manufacture. The Opportunity: As a Senior Product Design Engineer, you will work on a broad portfolio of technically challenging and highly innovative projects within consumer electronics,...
IR35 Status:
Outside IR35

CV-Library London, UK 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 28, 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 28, 2026  
Senior Platform Engineer
Senior Platform Engineer Location: Remote (Occasional travel to their London office) Contract: Inside IR35 Day rate: Up to £800 per day Duration: 6 months Start date: ASAP Key words: Azure, Terraform, containerization, CI/CD As part of our Client's AI Engineering team, you will own the infrastructure and delivery pipelines that keep our AI-driven products reliable, scalable, and fast. You will design and maintain the cloud environments, CI/CD workflows, and observability systems that enable our engineers to ship with confidence. Key Skills: - Strong experience with Azure cloud services (compute, networking, storage, identity) - Proficiency with Infrastructure as Code (Terraform) - Solid experience building and maintaining CI/CD pipelines (GitHub Actions) - Hands-on experience with container orchestration (Kubernetes, Docker) - Proficiency in scripting and automation (Python, Bash, or similar) - Understanding of networking fundamentals, security best practices, and...
IR35 Status:
Inside IR35

CV-Library London, UK 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  
Senior Engineer - Highway Structures
Senior Engineer - Structures (Highways) Location: London / Birmingham / Manchester Rate: £50-60 per hour | Inside IR35 Hours: Full-time, 37.5 hours per week, flexible hybrid working About the Role We are looking for a Senior Engineer to join a Structures Team delivering major highways projects across the UK. This role involves managing the delivery of technical outputs for multiple projects, ensuring design quality, compliance with standards, and overall technical excellence. Key Responsibilities ·Lead and deliver technical outputs for projects, including scheme investigation, detailed design, and construction supervision. ·Act as Lead Designer, reviewing and authorising design deliverables (drawings, specifications, reports, and contract documents). ·Conduct inspections, assessments, and feasibility studies of highway and bridge structures. ·Mentor and develop junior engineers, technicians, and graduates. ·Contribute to technical excellence, innovation, and value...
IR35 Status:
Inside IR35

CV-Library Birmingham, UK Contractor
CL
Jun 28, 2026  
Mechanical Engineer
Job Title: Intermediate/Senior Mechanical Engineer - 12 Month Contract or Permanent Location: Mostly remote (occasional travel to London) Contract Rate: £45-£53 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,...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jun 28, 2026  
Senior Engineer – Issue Management
Senior Engineer – Issue Management This amazing contract for our automotive client is a Senior Engineer – Issue Management role. You will take ownership of the Issue Management System (IMS), ensuring effective tracking, governance, and resolution of engineering issues through a structured, ticket-based process. This role is pivotal in driving accountability across engineering teams, ensuring adherence to the 8D problem-solving methodology, and embedding lessons learned into future vehicle programmes. Key Responsibilities Issue Management & Process Ownership Oversee and administer the Issue Management System (IMS). Govern the lifecycle of engineering issues via a ticket-based system. Ensure all issues are documented, progressed, and closed in line with defined processes. Maintain data integrity and traceability across all issue records. Coordination & Stakeholder Engagement Act as the central point of coordination between engineering teams. Drive timely...
IR35 Status:
Unknown Status

CV-Library Norwich, UK Contractor
CL
Jun 28, 2026  
Booking and Messaging Java Developer (COMBJP00001223)
Senior Java Backend Engineer (Distributed Systems & Messaging) Location: London, UK (Hybrid) Role Type: Permanent Tech Stack: Java 8+, Concurrency, Apache Kafka / JMS / TIBCO, Spring Boot, Microservices, Low-Latency About the Team & Platform We are building and scaling a complex, high-throughput, electronic trading platform distributed across several international hubs. Our development environment is structured around highly autonomous, functional cells that own their own backlogs-supported directly by Product Owners, Business Analysts, and Scrum Masters. Specifically, our core engineering focus sits at the intersection of trade booking architectures, static data management, and real-time connectivity workflows. This team is responsible for managing the continuous, asynchronous transaction data pipelines that ingest live trade feeds directly from external international exchanges and trading venues. What You Will Do Design, implement, and adapt complex distributed...
IR35 Status:
Unknown Status

CV-Library London, UK 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
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