Location: London Birmingham Manchester Leeds Newcastle Bicester Other UK locations considered Salary: Up to 85,000 + Comprehensive Benefits Package Shape the future of Data Centre engineering.The UK's Data Centre market continues to evolve at an unprecedented pace. As demand grows for resilient, sustainable and technically sophisticated digital infrastructure, leading Building Services Design Consultancies are seeking experienced Principal Mechanical Engineers who can provide technical leadership on some of the industry's most prestigious projects. At Eligo Recruitment , we partner with consultancies delivering hyperscale campuses, co-location facilities, enterprise data centres and mission critical infrastructure for some of the world's largest technology organisations. If you're looking for a position where your technical expertise genuinely influences project success, this could be your next career move. The Opportunity As a Principal Mechanical Engineer, you'll be...

Senior / Principal Mechanical Engineer Birmingham Building Services Consultancy Hybrid Flexibility An exciting opportunity has arisen for a Senior or Principal Mechanical Engineer to join a growing building services consultancy in Birmingham. Established for more than 25 years, this independently owned consultancy delivers mechanical, electrical and building performance engineering solutions across a wide range of sectors, including healthcare, commercial, education, residential, life sciences, leisure and public sector projects. The business has built a strong reputation for technically high-quality, sustainable and low-carbon design, with collaboration, quality and professional development at the heart of its approach. The Birmingham office is entering an exciting period of growth, with ambitious plans to significantly expand the team over the coming years. This is an excellent opportunity for an experienced engineer to play an important role in the development of the...

Senior/Principal Mechanical Engineer Location: Exeter (Hybrid - 2 days WFH) Salary: 45,000 - 60,000 + benefits This is an opportunity to join a close-knit team of around 25 staff, where you'll play a key role in delivering technically strong, buildable designs across a genuinely varied project portfolio. You'll be working across sectors including healthcare, MOD, education (from primary schools through to universities), commercial, and residential. Projects range from complex refurbishments through to new build developments, with the added benefit of working both client-side and alongside contractors-giving you well-rounded exposure and a deeper understanding of how projects are delivered on site. The business prides itself on developing high-quality engineers, with a strong emphasis on practical design and real-world application. You'll be given the autonomy to take ownership of your projects, build client relationships, and support the development of junior...

Help us to make a world of difference Urenco is a global leader in the production of low-carbon energy, playing a critical role in delivering secure, reliable nuclear fuel solutions worldwide. We are focused on enabling the sustainable generation of electricity for customers around the world while operating to the highest environmental, social, and regulatory standards. In addition, as part of a strategically important industry, Urenco is now required to support the UK Government in exploring options to re-establish nuclear fuel capabilities to produce reactor fuel for defence purposes. To support this new project, we are seeking a Principal Mechanical Engineer to join our Capenhurst/Birchwood site. In this role, you will work within our Government Services function as a key interface between site teams and Group stakeholders to ensure effective planning, coordination, and delivery across complex programmes. At Urenco, we're committed to helping you be your best. If you...

Enpure Ltd are a progressive organisation in water and wastewater services and are looking to recruit a, self-motivated and engaging Principal Mechanical Engineer with strong analytical skills and experience in technical design, delivery and management of water and wastewater engineering projects. Your New Role : Lead and contribute on feasibility, outline and detailed design projects. You will be responsible for the design of mechanical installations, typically including municipal water and wastewater treatment works, pumping stations, ventilation systems, penstocks and valves, odour control systems, chemical dosing systems, pipework etc. Other duties to include: Interface with clients and collaborators in design and planning You will carry out visits to site to complete site surveys and the support of liaisons with clients, government authorities, contractors, suppliers. You will integrate with other disciplines within the business and external to agree and...

Senior / Principal Mechanical Design Engineer London Hybrid Working Up to 65k About the Company A growing engineering consultancy is looking to appoint a Senior or Principal Mechanical Design Engineer to join its Building Services team. The business delivers engineering expertise across a diverse portfolio of projects throughout the UK, supporting clients across sectors including commercial, defence, public sector, transportation, utilities and infrastructure. With a strong reputation for technical excellence and collaborative working, they provide engineers with the opportunity to work on challenging and high-profile projects while maintaining a healthy work-life balance. The Opportunity This is an excellent opportunity for an experienced Mechanical Design Engineer to join a well-established team delivering innovative and sustainable building services solutions. You'll be involved in projects from concept through to completion, working closely with...

Role Purpose We are seeking an experienced and ambitious Principal Design Engineer to join a growing Building Services consultancy. This is an excellent opportunity for a senior-level engineer looking to lead the design and delivery of complex projects across commercial, residential, healthcare, education, industrial, and mixed-use developments. Responsibilities Lead the design and delivery of building services projects from concept through to completion. Manage multidisciplinary engineering teams and coordinate with architects, contractors, and external stakeholders. Produce and review detailed engineering calculations, specifications, reports, and technical drawings. Provide technical leadership across HVAC, public health, electrical, or mechanical building services disciplines. Ensure compliance with current regulations, British Standards, and industry best practices. Attend client meetings and act as a technical lead throughout project lifecycles. Support...

Principal Mechanical Design Engineer - Gloucester (Hybrid) - Up to £65,000 + £5,000 Car Allowance + 10% Bonus The Company Our client is a highly respected engineering and manufacturing business with decades of experience designing, developing and producing specialist equipment for the rail and infrastructure sectors. Renowned for innovation, quality and reliability, the company develops, manufactures and tests its products in-house, enabling the rapid delivery of bespoke engineering solutions to some of the UK's leading rail organisations. The Opportunity & Role As part of a planned succession strategy, the business is seeking to appoint a Lead Mechanical Design Engineer / Design Manager to become its technical authority for product design and development. You will lead the design, development and delivery of bespoke safety-critical equipment used throughout the rail sector, working closely with customers to translate engineering challenges into practical, innovative...

Location: Manor Royal Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Under Water Systems (UWS) Our purpose is to be the leading provider of underwater sensors and decision superiority, helping navies across the world keep our friends, families and all of us safe. We cover four sectors: Mine Counter Measures, Anti-Submarine warfare, Services and Future Capabilities. Primary Purpose of the Role: Be the Mechanical Engineering Lead for the UWS project, supporting product and development. To provide direction to the mechanical team and increase the capability of the Mechanical...

Senior Mechanical Design Engineer Principal Mechanical Design Engineer Mechanical Discipline Lead - Water Location: Manchester (Hybrid Working Available) Contract: Permanent or Contract (Outside IR35) The Opportunity Our client is a growing engineering design consultancy delivering multidisciplinary projects across the UK water, rail and utilities sectors. Due to continued growth, they are looking to recruit experienced Senior Mechanical Design Engineers, Principal Mechanical Design Engineers and Mechanical Discipline Leads to join their Manchester-based team. This is an excellent opportunity for experienced Mechanical Engineers with a background in the UK water industry to play a key role in delivering major clean water and wastewater projects. Depending on your level, you'll combine hands-on engineering design with technical leadership, mentoring and discipline governance, helping to shape engineering excellence across multiple water industry frameworks. Working...

Lead the Delivery of Critical Water Infrastructure Projects as a Principal EICA Engineer! Our Client has a requirement for a Principal EICA Engineer, who will be required to work on a contract and permanent basis in the North of England. Role Purpose: Provide technical leadership across major water and wastewater infrastructure projects. Lead the design and delivery of complex electrical engineering solutions. Support project bids, technical strategy and engineering excellence initiatives. Mentor and develop engineering teams. Deliver safe, innovative, compliant and cost-effective engineering solutions. Take ownership of electrical engineering activities throughout the project lifecycle. Job Role Responsibilities: Lead and coordinate the delivery of complex electrical engineering designs. Provide technical leadership across multidisciplinary project teams. Develop innovative and practical engineering solutions. Ensure designs are safe, compliant,...

ELECTRICAL ENGINEER 65,000 - 85,000 + Package London & UK Nationwide Location: London-based with opportunities across the UK Salary: 65,000 - 85,000 depending on experience Employment: Permanent Travel: UK-wide project travel required THE OPPORTUNITY We are looking for an experienced Electrical Engineer to join an established engineering and construction business delivering complex electrical and building services projects across the UK. This is an excellent opportunity for an engineer who wants exposure to major infrastructure, transport, healthcare, energy, aviation and commercial projects , working in technically demanding environments where safety, quality and engineering excellence are critical. The role will be primarily focused around London and the South East , with opportunities to work on projects across the country. The successful candidate will become part of an engineering-led organisation that works collaboratively with clients,...

Principal Manufacturing Engineer Advanced Manufacturing & Defence Up to 80,000 Location: Dorking, Surrey Engineering expertise meets customer engagement, innovation and growth. Are you an experienced engineer who enjoys solving complex manufacturing challenges, working directly with customers and turning technical problems into practical solutions? This is a rare opportunity to join a growing specialist engineering business and play a key role in developing its presence across advanced manufacturing and UK defence, while remaining closely connected to engineering and manufacturing. This is not a traditional sales role. Your technical credibility is at the heart of the position. You'll work with customers to understand requirements, review drawings and specifications, develop manufacturing solutions and support projects from initial enquiry through to delivery. Internally, you'll work closely with engineering, production and purchasing teams to ensure solutions...

Principal Electrical Engineer Location: Croydon or London Salary: Competitive, depending on experience Job Type: Full-time About the Company We are an established building services and engineering consultancy with a strong reputation across London and the South of England. The business works across a diverse range of sectors, including healthcare, education, commercial, residential, leisure and industrial projects. Its work covers electrical, mechanical and public health engineering, alongside energy, sustainability and low-carbon design. The company has built a stable team with excellent staff retention , with engineers able to develop their careers over the long term. The current Managing Director is a good example of this progression, having joined the business as an engineer before moving into senior leadership. The Role We are looking for an experienced Principal Electrical Engineer to take a leading technical role within the business. This is an...

Principal Engineer Advanced Manufacturing & Defence Up to £70,000 Location: Dorking, Surrey Engineering expertise meets customer engagement, innovation and growth. Are you an experienced engineer who enjoys solving complex manufacturing challenges, working directly with customers and turning technical problems into practical solutions? This is a rare opportunity to join a growing specialist engineering business and play a key role in developing its presence across advanced manufacturing and UK defence, while remaining closely connected to engineering and manufacturing. This is not a traditional sales role. Your technical credibility is at the heart of the position. You'll work with customers to understand requirements, review drawings and specifications, develop manufacturing solutions and support projects from initial enquiry through to delivery. Internally, you'll work closely with engineering, production and purchasing teams to ensure solutions are...

Are you ready to take your engineering career to the next level? Our client, a leader in the aerospace industry, is seeking a Principal Mechanical Design Engineer to join their dynamic team in Solihull. This is an exciting opportunity to work on groundbreaking projects that will shape the future of clean aviation technology. Summary: Start date: October 2026 Duration: 6 months with potential for extension or made permanent Location: Solihull B90 Pay Rate: £60.00 per hour via Umbrella Hours: 37 hours per week - Hybrid Working after training has completed Key Responsibilities: Lead concept development and design of high-performance motors and controllers. Drive engineering design excellence and ensure adherence to design assurance processes. Support independent design assurance activities, including design reviews and engineering document approvals. Collaborate with project teams to maintain the technical integrity of products. Facilitate the...

Are you ready to take your engineering career to the next level? Our client, a leader in the aerospace industry, is seeking a Principal Mechanical Design Engineer to join their dynamic team in Solihull. This is an exciting opportunity to work on groundbreaking projects that will shape the future of clean aviation technology. Summary: Start date: October 2026 Duration: 6 months with potential for extension or made permanent Location: Solihull B90 Pay Rate: 60.00 per hour via Umbrella Hours: 37 hours per week - Hybrid Working after training has completed Key Responsibilities: Lead concept development and design of high-performance motors and controllers. Drive engineering design excellence and ensure adherence to design assurance processes. Support independent design assurance activities, including design reviews and engineering document approvals. Collaborate with project teams to maintain the technical integrity of products. Facilitate the resolution of issues...

Technical Surveyor (Machinery) Salary: 59,487 to 69,985 / £42,479 to £49,976 (dependent on experience) Vehicle: A vehicle will be made available to carry out your duties Contract Type: Permanent Hours: Full Time Additional Information: Homebased with travel to RNLI locations and contractor sites Interview Date: Week of 12th Oct Closing Date: Reference: 21992 About Us Our purpose is simple: to save lives at sea. 24 hours a day, every day, RNLI lifesavers are ready to launch to the rescue. We're looking for a Technical Surveyor to join our surveying team to provide cover nationally, conducting surveys annually on every RNLI All Weather Lifeboat and additionally on station launch and recovery assets. As a specialist in mechanical & electrical systems, you will support the Principal and Senior Surveyors to ensure that our lifeboats and launching equipment are built and maintained to the highest possible standards. You will play an important part in...

Role Purpose We are seeking an experienced and ambitious Principal Design Engineer to join a growing Building Services consultancy. This is an excellent opportunity for a senior-level engineer looking to lead the design and delivery of complex projects across commercial, residential, healthcare, education, industrial, and mixed-use developments. You will play a key role in managing project teams, overseeing technical design delivery, developing client relationships, and mentoring engineers while ensuring projects are delivered to the highest standards. Responsibilities Lead the design and delivery of building services projects from concept through to completion. Manage multidisciplinary engineering teams and coordinate with architects, contractors, and external stakeholders. Produce and review detailed engineering calculations, specifications, reports, and technical drawings. Provide technical leadership across HVAC, public health, electrical, or mechanical building...

Advanced Engineering Lead Senior Advanced Engineering Lead - Advanced Manufacturing Scale-Up ( assembly with electrification and injection moulding inputs) Coventry Up to £70,000 plus car/car allowance, 33 days holiday (including bank holidays), pension, bonus, life assurance, employee assistance programme, wellbeing support, and flexible benefits including cycle to work scheme About the Role Unipart Manufacturing is launching a flagship, fast-paced manufacturing project in Coventry, combining high-volume electrification assembly with complex injection moulding inputs. Fully aligned with Unipart's Sector and Growth Strategy and The Unipart Way Forward Plan, this critical project will scale from zero to over 200 employees within just four months. We are seeking a high-calibre Senior Advanced Engineering Leader (Engineering Manager) with deep technical expertise in electrification and injection moulding assembly. Reporting directly to senior executive leadership, you...