An innovative clean energy technology business is developing next-generation power systems designed to support the global transition away from fossil fuels. Working at the forefront of advanced engineering, prototype development and complex system integration, the business is scaling its technical build capability as it moves towards commercial deployment.
We’re seeking a skilled Senior Mechanical Build Technician to join the prototype machining and fabrication team. You’ll take ownership of complex mechanical builds, from tube assemblies and piping systems through to larger engineered systems and facilities installations, bringing practical expertise and initiative to every project.
This role would suit an experienced build technician who thrives working hands-on with complex systems, enjoys solving technical build challenges, and wants to be part of an innovative engineering environment delivering real-world technology.
Responsibilities include:
Building and installing complex mechanical systems, pipework and technical hardware independently and as part of a team
Assembling tube, pipe and valve systems using compression fitting systems
Supporting the build of larger engineered systems and prototype assemblies
Installing mechanical pipe runs, valves and associated hardware to engineering drawings and specifications
Following work instructions and producing build documentation where required
Maintaining high health & safety standards, including COSHH and risk assessment compliance
Ordering consumables and supporting efficient management of build materials
Identifying and resolving practical build issues, feeding back improvements to the Engineering Team
Supporting facilities upgrades and infrastructure installation projects
We’re keen to speak with people with experience in:
Extensive hands-on experience building complex mechanical systems
Mechanical assembly within gas handling, process equipment, aerospace, specialist gas, laboratory or similar technical environments
Tube, pipe, valve and mechanical system assembly
Compression fitting systems (Swagelok, Parker, Fitok or similar)
Reading and interpreting engineering drawings and technical documentation
Building larger integrated mechanical systems or technical infrastructure
Strong practical problem-solving skills within prototype or engineering build environments
Safe working practices including COSHH, risk assessments and workshop/site safety awareness
Basic turning and milling experience (desirable but not essential)
Package & Benefits:
Competitive salary
Performance bonus scheme
Share option scheme
Private healthcare
Contributory pension
25 days annual leave + bank holidays
Life insurance
Flexible working hours | 37.5 hrs/week
Employer-funded training & development
Up to 4 weeks contractual sick pay
To find out more or to apply, reach out to Lewis at Cranleigh STEM directly: lewis@cranleighstem.co.uk
Cranleigh STEM is a specialist recruitment partner in STEM, Sustainability, and SHEQ. We work with innovative organisations and purpose-led professionals to help solve some of the world’s most pressing challenges, from advancing clean technologies to driving scientific discovery.
We understand that progress in these fields depends on people. Our role is to connect the right individuals with the right teams, whether that’s scientists in the lab, engineers on the ground, or leaders at the helm.
🚀 Our Mission
To support innovative organisations by delivering the talent they need to grow, evolve, and make a meaningful impact in their field.
🔎 Our Core Values
Challenge
We’re comfortable working in complex, technical spaces. We approach every brief with curiosity and care, asking the right questions to deliver people who can genuinely move your organisation forward.
Collaboration
We see recruitment as a partnership. That means open communication, transparency, and shared goals, whether you’re building a team or looking for your next role.
Commitment
We take pride in the work we do. We’re committed to high standards, long-term relationships, and doing what’s right for our clients, our candidates, and the industries we serve.
💡 Our Purpose
To contribute to a more sustainable and innovative future by helping organisations in science and technology attract and retain the talent they need to grow responsibly and with purpose.
🌍 Our Reach
Headquartered in South London, we work with clients and candidates across the UK, Europe, and the USA.
🔬 Areas of Expertise
Biotechnology
Pharmaceuticals
Chemicals & Materials
Food Technology
Clean Technology
Electric Vehicles & Sustainable Engineering
If you're hiring or exploring your next move in STEM, we’re here to help.
