33 senior mechanical design engineer jobs found

Principal RF Engineer Location: Great Baddow or Cowes Contract Length: 6 months IR35: Inside IR35 Rate: £60p/h PAYE (£68.72p/h inc. holiday rate) OR £81.05p/h Umbrella Role Overview We are seeking a highly experienced Principal RF Engineer to provide technical leadership in the design and development of advanced Radio Frequency (RF) hardware systems. This is a senior-level role focused on delivering robust RF solutions across new product development and technology upgrades to existing platforms. The successful candidate will lead RF design activities from concept through to production and integration, resolving complex engineering challenges within high-performance, safety-critical environments. Key Responsibilities Provide technical leadership and subject matter expertise in RF engineering. Develop RF system architectures and detailed circuit-level designs. Perform RF and electromagnetic simulation and analysis (e.g., using industry-standard tools such as ADS, HFSS or...

Senior Mechanical Engineer - BAE Systems Barrow  £53.90 to £57.97 per hour Umbrella - inside IR35  2 days every 2 weeks onsite - 80% remote  12 month contract Specialising in HVAC/Cooling Systems - full job spec below. The Senior Mechanical Engineer (Platform Systems) shall provide support to the Principal Engineers and/or external specialists during development and analysis of mechanical systems. The Senior Engineer shall be involved in leading analysis and production of technical reports and team deliverables. JOB FUNCTION / CATEGORY Engineering GRADE S4 CORE DUTIES In accordance with the level of supervision/responsibility assigned by role/grade: • Develop design solutions to agreed time, cost and quality in accordance with project or business milestones. • Develop and manage requirements and acceptance criteria specific to a system or product and/or across a system of systems, platform or programme • Understand the contractual and performance requirements for...

Principal Digital Electronics Engineer 12 months £84.55 per hour (inside IR35) Hybrid working About the Opportunity We are seeking a Principal Digital Electronics Engineer to help deliver advanced electronic solutions across some of the most complex and high-profile defence and security programmes in the UK. This is a technical leadership role where you will shape digital hardware architectures, influence system-level design decisions, and mentor engineers across the full product lifecycle - from concept through to production and in-service support. What You'll Be Doing Lead the architecture, design and development of complex digital electronic systems Define and review FPGA, SoC, and high-speed digital designs Oversee requirements capture, design documentation, and verification strategies Provide technical authority and governance across multiple projects Support system integration, validation, and qualification activities Collaborate with systems, software, firmware,...

Principal Digital Electronics Engineer 12 months £84.55 per hour (inside IR35) Hybrid working (Portsmouth) About the Opportunity We are seeking a Principal Digital Electronics Engineer to help deliver advanced electronic solutions across some of the most complex and high-profile defence and security programmes in the UK. This is a technical leadership role where you will shape digital hardware architectures, influence system-level design decisions, and mentor engineers across the full product lifecycle - from concept through to production and in-service support. What You'll Be Doing Lead the architecture, design and development of complex digital electronic systems Define and review FPGA, SoC, and high-speed digital designs Oversee requirements capture, design documentation, and verification strategies Provide technical authority and governance across multiple projects Support system integration, validation, and qualification activities Collaborate with systems,...

Senior Network Engineer / SC Cleared / 6 Month Contract/ Inside IR35 / £550 / Hybrid / Milton Keynes The Senior Network Engineer will be responsible for designing, implementing, securing, and maintaining enterprise network infrastructure with a focus on high availability, performance, and resilience. This role provides advanced technical leadership across routing, switching, firewall administration, and network security operations. The engineer serves as an escalation point for complex issues involving Cisco switching platforms, Cisco Firepower Threat Defense (FTD), and Palo Alto Networks Next-Generation Firewalls, ensuring the network reliably supports business operations. Experience in support and design in highly secure environments. Cisco Switching, Routing, Security and wireless technologies Network Protocols TCP/IP, BGP, ICMP, OSPF, IPSEC Cisco ASA Firewall Administration and design Cisco Firepower ( NGFW) Palo Alto Firewall administration. Knowledge of Virtual Environments...

Systems Engineer Location: Edinburgh (2 days onsite pw is required) Contract Contract Length: 6 Months Daily Rate: Up to £600 (inside IR35 via umbrella) Are you a talented Systems Engineer looking for your next challenge? Our client is seeking a skilled professional to join their dynamic team on a contract basis. This is a fantastic opportunity to contribute to a range of exciting projects while enjoying the flexibility of hybrid working. Key Responsibilities: Manage and maintain network systems, ensuring efficient routing, DHCP, and DNS functionality. Set up and administer Active Directory, including site design, Group Policy, security protocols, and certificate services. Oversee Windows Server (2022) administration, ensuring optimal performance and security. Develop and execute PowerShell scripts to automate tasks and improve system efficiency. Work within the Amazon AWS Cloud environment, utilising EC2, security groups, EFS, SBS, S3, and load balancers to...

Senior Technical Data Solution Designer Location: London Paddington / Reading Green Park (Hybrid – 2 days onsite) Contract: 6 Months Rate: £465–£550 per day (Inside IR35) It Means More This opportunity offers more than just another contract role: * More ownership – Act as the senior technical authority within your data product squad, shaping end-to-end solution design. * More impact – Build trusted business layers and dashboards that directly influence strategic business decisions. * More technical depth – Work hands-on with modern tooling including dbt, SQL, GCP, Tableau and Atlan within a hybrid data mesh environment. The Role We are seeking a Senior Technical Data Solution Designer to join a large-scale enterprise data transformation programme within a complex, fast-paced environment. This is a pivotal, hands-on leadership role — the peak of the technical career pathway within the squad model. It is not a people management role, but a senior individual contributor...

Senior Technical Architect Location: Bristol (Hybrid Working Available) Start Date: ASAP Duration: 7 months + Rate: £95 - £105 per hour - Inside IR35 Shape the Future of Secure, Mission-Critical Systems Are you ready to lead technical design for complex, high-impact programmes? We're seeking a Senior Technical Architect to provide strategic technical leadership across critical systems and services. This is an opportunity to influence roadmaps, drive innovation, and ensure solutions are secure, resilient, and future-ready. Working in a collaborative, agile environment, you'll take ownership of architectural direction while mentoring others and engaging senior stakeholders. A hybrid working model is available, combining on-site collaboration in Bristol with remote flexibility. The Role As a Senior Technical Architect, you will: Act as the technical authority for systems and services. Define and evolve architectures aligned to customer needs, architectural principles, and...

Senior Product Test Engineer Glenrothes - 6 months Inside IR35 – BPSS Required – 37 hours A leading defence and high‑reliability electronics manufacturer is seeking a Senior Product Test Engineer to support a wide range of complex electronic test activities across production programmes. This role blends hands‑on electronic test engineering with diagnostic expertise, data analysis, and technical leadership, ensuring products meet the highest standards of reliability and performance. The position is ideal for an experienced electronics professional who enjoys deep technical problem‑solving, working to component level, and supporting the full test lifecycle within a demanding manufacturing environment. Job Responsibilities * Supporting production test activities across a range of high‑reliability electronic products, ensuring robust performance and on‑time delivery. * Performing diagnostics, fault‑finding, and debug down to component level, resolving complex issues...

Senior Manufacturing Test Engineer Glenrothes - 6 months Inside IR35 – BPSS Required – 37 hours A leading defence and high‑reliability electronics manufacturer is seeking an experienced Senior Manufacturing Test Engineer to strengthen technical stewardship, improve product quality, and drive efficiency across Unit Build and CCA manufacturing operations. This role is highly product‑focused and requires deep involvement in a functional test environment, supporting both current production and future capability development. Job Responsibilities * Enhancing technical support to customers and internal stakeholders, ensuring robust product performance and responsive issue resolution. * Driving continuous improvement in test quality, throughput, and diagnostic efficiency across Unit Build and CCA manufacturing. * Taking full life‑cycle ownership of test costs, test efficiency, and test performance, ensuring solutions remain effective and scalable. * Analysing yields, test...

Senior Manufacturing Engineer Glenrothes – 6 months Inside IR35 – BPSS clearance – 37 hours A leading defence and high‑reliability electronics manufacturer is seeking an experienced Senior Manufacturing Engineer to support ongoing production, NPI activity, and continuous improvement across multiple manufacturing cells. This role is suited to someone who enjoys solving complex technical problems, improving processes, and working closely with cross‑functional engineering teams. Job Responsibilities * Driving improvements in product performance and manufacturing processes, ensuring robust, repeatable, and efficient production. * Delivering reporting, analysis, and data‑driven insights to support engineering and operational decision‑making. * Providing technical support to internal teams and external customers, helping resolve product or process‑related issues. * Supporting innovation and engineering development, contributing to new ideas, methods, and technologies that...

Contract Senior Structural Engineer London | Immediate Start | Up to c£50 p/h | 6-Month Rolling Contract | Inside IR35 Are you a highly experienced Structural Engineer ready to make your mark on a landmark international project? A leading global engineering consultancy based in Central London is seeking a Contract Senior Structural Engineer to join their team immediately, playing a key role in the delivery of a major overseas airport development. This is a fantastic opportunity to work on a technically complex, high-profile infrastructure project within a fast-paced, collaborative environment. You will provide critical design input on a prestigious international airport project, contributing to large-scale structural solutions that demand precision, creativity, and technical excellence. We are looking for a senior-level professional with: * 8–10+ years’ building structures design experience * Strong technical expertise in steel and reinforced concrete (RC) design *...

Are you an experienced Project Architect with experience in the nuclear or defence sectors (Or similar)? Ready to shape the future of the UK's most secure and technically demanding infrastructure projects with a large international consultancy? Job Title: Project Architect Location: London Contract Length: Initial 12-month contract Rate: DoE (This role falls inside IR35) The Opportunity We're recruiting for highly skilled Project Architect to join one of the world's leading design and engineering consultancies. With a strong pipeline of secured work across the UK nuclear and defence landscape working on front-end design. You'll be part of an expert, multidisciplinary team working on high-value defence facilities, secure government estates, and nuclear-grade installations. Whether you specialise in front-end concept design or technical delivery through RIBA Stage 3/4+, your expertise will directly support national capability and resilience. The Role We're looking for...

Are you an experienced Project Architect with experience in the nuclear or defence sectors (Or similar)? Ready to shape the future of the UK's most secure and technically demanding infrastructure projects with a large international consultancy? Job Title: Project Architect Location: Cardiff Contract Length: Initial 12-month contract Rate: DoE (This role falls inside IR35) The Opportunity We're recruiting for highly skilled Project Architect to join one of the world's leading design and engineering consultancies. With a strong pipeline of secured work across the UK nuclear and defence landscape working on front-end design. You'll be part of an expert, multidisciplinary team working on high-value defence facilities, secure government estates, and nuclear-grade installations. Whether you specialise in front-end concept design or technical delivery through RIBA Stage 3/4+, your expertise will directly support national capability and resilience. The Role We're looking for...

Rullion are looking to recruit for the following role: Electronics Engineer Start : 1st May 2026 12 month contract Location : Oxford Inside IR35 PAYE £46 Per hour /£59 Per hour Umbrella. 7.5 hours per day 37.5 hours per week Power Supply & Power Electronics Design Design and develop high-current, high-stability power supplies for superconducting magnets and related systems Design linear and switch-mode power converters (DC/DC, AC/DC, current-regulated supplies) Develop precision current regulation and control loops with excellent stability and low ripple Perform detailed control-loop analysis (Bode plots, phase margin, transient response) Design protection circuits (over-current, over-voltage, ground fault, quench-related protection) Select power semiconductors (IGBTs, MOSFETs, diodes), magnetics, and passive componentsMagnet System Support Support powering, ramping, and steady-state operation of superconducting magnets Understand magnet load characteristics,...

Role: Senior Sourcing Specialist Location: Cheltenham Duration: 12 months Rate: DOE Inside IR35 : Umbrella About our client: Our client is a leading aerospace engineering company specializing in jet engines, avionics, and integrated systems for both military and commercial aircraft. They operate major UK facilities, including maintenance, repair, and overhaul (MRO) sites. Role Summary This 12‑month assignment combines commodity management, supplier execution, and NPI sourcing strategy into a single role. The Senior Lead Sourcing Specialist - Commodity: Manage and optimise a defined supplier panel and commodity portfolio Lead key negotiations, LTAs, EBQ structures, and commercial frameworks for both existing and new programs Drive supplier recovery and performance improvement to protect safety, quality, delivery, and cost Act as a key interface between Programs, Engineering, Operations, and suppliers to align sourcing strategy with business needsThe role requires an...

Decommissioning - Package Manager - Electrical Engineering Culham, Oxfordshire - 4 days on site 1 days remote 12-month contract | Full-time | Start ASAP - 9th March 2026 £56-61/hour Inside IR35 UKAEA is seeking an experienced Electrical Engineering Package Manager to lead the planning and delivery of safe, compliant, and efficient electrical decommissioning activities within the JDR Programme. This is a high-responsibility role, managing HV and LV systems through pre-construction and construction phases, with oversight of decommissioning plans, risk mitigation, and technical documentation. You will bring expert knowledge in electrical systems, regulatory compliance, and decommissioning best practices, working closely with programme teams, contractors, and the Plant Safety Team to ensure successful execution of complex electrical decommissioning projects. Key Responsibilities Electrical Decommissioning Management Lead electrical decommissioning planning, including schedules...

System Engineer Location: East London (Hybrid – office/home) Rate: £450–£500 per day (Inside IR35) Duration: Initial 3–4 month contract (backlog clearance) with strong potential for extension or permanent conversion Client Environment: Major London Rail customers (TfL, Network Rail – station systems) Overview We are seeking a mid-to-senior Cybersecurity & Network Assurance Engineer to join a high-performing networks team supporting critical rail infrastructure in London. This role will focus on cybersecurity governance, assurance, and technical documentation, ensuring networked systems meet customer, regulatory, and industry standards. You will play a key role in clearing an immediate backlog of assurance deliverables while providing technical oversight to junior engineers and supporting SIEM integration activities. This is a hybrid East London role with no trackside/site access required. Key Responsibilities Cybersecurity Governance & Assurance Produce and...

Decommissioning Package Manager - Mechanical & Piping Engineering Culham, Oxfordshire (4 days on site, 1 day flexible) 12-month contract | Full-time | Start ASAP £56-61/hour Inside IR35 Are you an experienced Mechanical & Piping Engineer with a passion for delivering complex decommissioning projects safely and efficiently? This is an exceptional opportunity to play a key technical role in a major UK engineering programme, leading the planning, design, and execution of mechanical and piping decommissioning packages on a high-profile site. You'll work at the heart of a multidisciplinary programme, ensuring the safe removal, isolation, and disposal of critical mechanical systems, while driving compliance, innovation, and engineering excellence throughout the project lifecycle. The Role As Decommissioning Package Manager - Mechanical & Piping Engineering, you'll take ownership of engineering deliverables across discovery, planning, pre-construction, and construction...

Decommissioning - Worksite Lead Engineer Culham, Oxfordshire (4 days on site, 1 day flexible) 12-month contract | Full-time | Start ASAP £56-61/hour Inside IR35 Are you an experienced engineer with a proven track record in decommissioning or complex engineering projects? This is a key technical leadership role where you'll drive safe, compliant, and efficient engineering solutions across the pre-construction and construction phases of a high-profile decommissioning programme. You'll lead technical teams, oversee worksite investigations, surveys, hazard identification, and deplanting strategies, ensuring alignment with regulatory, legal, and UKAEA processes. Your expertise will shape engineering decisions and optimise delivery across multi-phase decommissioning projects. The Opportunity As Worksite Lead Engineer, you will: Lead engineering optioneering, feasibility studies, and planning within worksite constraints Develop and maintain multi-phase decommissioning plans,...