Senior / Principal Mechanical Design Engineer

Pertemps TM; Oxford; On-site; GBP 55,000 - 70,000; Full time

Job summary

A well-established engineering consultancy in Oxford is seeking a Senior to Principal Mechanical Design Engineer to lead projects focused on sustainability and heritage. You will guide the design process from concept to handover, working with clients and technical teams to produce energy-efficient solutions. The ideal candidate has over 6 years of mechanical design experience, particularly in education or healthcare sectors, and is proficient in industry-standard tools like Revit and AutoCAD. This role offers competitive salary, hybrid working, and professional growth opportunities.

Benefits

Competitive salary

Flexible / hybrid working

Private healthcare

Cycle-to-work scheme

Career progression support

Qualifications

• 6+ years of consultancy experience delivering mechanical design.
• Experience in education, commercial, healthcare, or heritage projects.
• Chartered (CEng / MCIBSE) or working toward chartership preferred.

Responsibilities

• Lead mechanical design from RIBA Stage 2 to handover.
• Collaborate with clients and architects to create energy-efficient solutions.
• Oversee technical documentation and support construction activities.

Skills

Mechanical design

HVAC systems

Communication skills

Coordination skills

Education

Degree in Mechanical Engineering or Building Services

Tools

Revit

AutoCAD

IES

Hevacomp

Job description

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.