Senior Mechanical Design Engineer

RGB Recruitment Ltd; Cardiff; On-site; GBP 35,000 - 40,000; Full time

Job summary

A leading building services consultancy seeks a Senior/Principal Mechanical Engineer to launch and grow their new Cardiff office. The successful candidate will lead engineering projects, foster client relationships, and mentor junior engineers while contributing to sustainable building designs across various sectors. This role offers significant career growth potential in a supportive environment.

Benefits

Career progression opportunities

Supportive work environment

Commitment to professional development

Qualifications

• Senior or Principal Mechanical Engineering experience required.
• Strong consultancy experience in education, healthcare, and commercial buildings.
• Experience in energy modelling and BREEAM compliance.

Responsibilities

• Lead mechanical engineering design and delivery from feasibility to project completion.
• Establish client relationships and mentor junior engineers.
• Contribute to sustainability goals and oversee project compliance.

Skills

Client Engagement

Sustainable Design

Project Management

Mentoring

Education

Chartered Mechanical Engineer or working towards chartership

Job description

3 days ago Be among the first 25 applicants

This range is provided by RGB Recruitment Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

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Job Title: Senior/Principal Mechanical Engineer - Office Launch

Location: Cardiff, UK

About the Company

A well-established building services consultancy has recently opened a new office in Cardiff. The company is known for delivering high-quality, energy-efficient designs across multiple sectors. They offer full lifecycle support, including feasibility studies, detailed design, construction monitoring, project management, and sustainability advisory. The firm has a strong reputation for staff development and a commitment to low-energy, sustainable building solutions.

The Opportunity

• Strategic Leadership: Help launch and grow the Cardiff office, build local client relationships, and influence the company’s strategy in Wales
• Career Progression: Supported by an experienced leadership team, with the autonomy to make your mark. There is potential to progress to Associate or other leadership roles
• Project Portfolio: Work across sectors such as education, healthcare, commercial, residential, and specialist projects including laboratories, hotels, and leisure

Key Responsibilities

• Lead mechanical engineering design and delivery, from feasibility through to project close-out
• Establish and maintain strong relationships with clients, architects, M&E contractors, and other stakeholders
• Mentor junior engineers and support their professional development
• Contribute to energy performance and sustainability goals, including Part L compliance, dynamic simulation, and BREEAM
• Oversee site inspections, CDM compliance, contract administration, cost control, and scheduling
• Chartered Mechanical Engineer or working towards chartership, with strong consultancy experience
• Proven track record delivering projects across sectors such as education, healthcare, labs, and commercial buildings
• Experience in sustainable design, including energy modelling, Part L compliance, and low or zero carbon systems
• Confident in client engagement, project management, and technical leadership
• Experience mentoring or managing junior engineers is desirable

What’s In It For You?

• Make Your Mark: Be part of a growing office and shape its long-term success
• Career Growth: A clear and supported path to leadership roles such as Associate
• Supportive Environment: Work closely with experienced leaders in a collaborative team
• High Standards: Join a consultancy that values professional development and delivers top-quality, sustainable design

If you're a motivated Senior or Principal Mechanical Engineer looking for your next step, we’d love to hear from you.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Design, Engineering, and Consulting

• Industries

  Construction, Design Services, and Building Construction

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