Senior to Principal Mechanical Design Engineer
Location: Oxford | Sectors: Low Carbon, Heritage, Education, Healthcare
About the Company
Join a well-established, independent building services consultancy in Oxford, known for delivering sustainable, technically robust solutions across heritage refurbishments, modern low-energy campuses, and complex infrastructure projects. Our integrated team combines mechanical, electrical, lighting, Passivhaus, and building physics expertise under one roof. With a strong pipeline of work and investment in people, this role offers long-term progression and a chance to shape meaningful projects.
The Role
As a Senior or Principal Mechanical Engineer, you will:
* Lead mechanical design from RIBA Stage 2 to handover: HVAC, hot/cold water, and sustainable strategies.
* Collaborate with clients, architects, and internal teams to create energy-efficient, technically sound solutions.
* Apply building physics and performance analysis where relevant.
* Oversee technical documentation, drawings (AutoCAD/Revit), and specifications.
* Attend site visits, manage design coordination, and support construction.
* Mentor junior engineers and contribute to knowledge sharing.
* At Principal level: influence fee proposals, resourcing, and client development.
What We’re Looking For
* Degree-qualified in Mechanical Engineering or Building Services.
* 6+ years of consultancy experience delivering mechanical design.
* Experience across education, commercial, healthcare, or heritage projects.
* Strong understanding of HVAC systems, regulations, and energy-efficient design.
* Proficiency in Revit, AutoCAD, IES, Hevacomp, or similar.
* Excellent communication and coordination skills.
* Chartered (CEng/MCIBSE) or working toward chartership preferred.
What We Offer
* Competitive salary: £55,000–£70,000 (DOE)
* Flexible/hybrid working, 25+ days holiday, private healthcare, cycle-to-work scheme
* Varied project portfolio: listed buildings, modern low-energy campuses, sustainability-led projects
* Support for professional growth: chartership, leadership development, career progression to Associate and beyond
* Collaborative team culture with low staff turnover
If you’re a Senior or Principal Mechanical Engineer looking to work on sustainable, heritage-focused projects with career progression, this is your chance to make a tangible impact.
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