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- Tasks: Lead mechanical design projects from concept to completion, mentoring junior engineers along the way.
- Company: Join a respected Building Services Contractor in South Wales with a strong project pipeline.
- Benefits: Enjoy competitive salary, flexible working, and opportunities for professional growth.
- Why this job: Work on diverse, challenging projects while shaping the future of the design team.
- Qualifications: Degree or HNC/HND in Building Services Engineering; experience in mechanical design preferred.
- Other info: Training provided for those transitioning from different backgrounds.
The predicted salary is between 36000 - 60000 £ per year.
Senior/Principal Mechanical Design Engineer – South Wales (Building Services)
Location: South Wales
Salary: Competitive, depending on experience + package
Job Type: Full-time, permanent
I’m working with a well-established and highly respected Building Services Contractor based in South Wales who are currently looking to strengthen their in-house mechanical design team with the addition of
a Senior or Principal Mechanical Design Engineer .
With a strong pipeline of secured work across a range of sectors – including commercial, education, healthcare, residential, hospitality, and retail – this is an exciting opportunity for someone who wants to step into a role with real responsibility and the backing of an experienced, supportive team.
️ About the Role
This is a lead design role within the business. You’ll be responsible for managing mechanical design from early-stage concept through to technical delivery on site. You’ll act as the main point of contact for clients and design teams, chair project meetings, and ensure that designs are fully coordinated with both internal and external stakeholders.
You’ll also take a key role in supporting and mentoring junior engineers and apprentices in the team – helping to shape the future of the department and pass on your technical knowledge to the next generation.
Projects are varied and often technically challenging, ranging from multimillion-pound new builds to complex refurbishments – so there’s plenty to get stuck into.
Day-to-Day Responsibilities
- Lead mechanical design on projects from concept to completion
- Attend and chair design and coordination meetings
- Work closely with other disciplines and the in-house construction team
- Ensure compliance with relevant building regulations, CIBSE guides, and standards
- Develop detailed designs using relevant software (e.g. Hevacomp, IES, Revit, AutoCAD)
- Oversee and review drawings, schematics, and specifications
- Liaise directly with clients and represent the business in a professional manner
- Mentor junior engineers and support training where needed
- Report project progress to the M&E Design Director
What They\’re Looking For
- Degree or HNC/HND in Building Services Engineering (or similar discipline)
- Solid experience working on mechanical building services design, ideally within a contractor or consultancy
- Comfortable leading the design process and taking ownership of project delivery
- Strong technical knowledge across HVAC, LTHW/CHW systems, and sustainable design
- Good understanding of building regulations, CIBSE codes, and design standards
- Experience with industry-standard software (e.g. Revit, IES, AutoCAD, Hevacomp)
- Good commercial awareness and ability to design within a given budget
- Strong communication skills and confidence engaging with clients and external teams
- Previous experience in a contracting environment is beneficial – but not essential (training can be provided)
What’s on Offer
- A secure, long-term role with a company that values loyalty and invests in its people
- Competitive salary and package (negotiable depending on experience)
- Flexible working arrangements available where needed
- Exposure to a wide variety of technically challenging and rewarding projects
- Real autonomy within a trusted team and clear progression opportunities
- The chance to influence the growth of the design function and contribute to the wider business strategy
If you\’re an experienced mechanical design engineer looking to take that next step – or just want to work on high-quality projects in a company that truly values its staff – I’d love to hear from you.
You can apply directly or get in touch for a confidential chat. #J-18808-Ljbffr
Senior/Principal Mechanical Design Engineer employer: Pertemps
Contact Detail:
Pertemps Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior/Principal Mechanical Design Engineer
✨Tip Number 1
Network with professionals in the building services sector, especially those who work in mechanical design. Attend industry events or webinars to connect with potential colleagues and employers, as personal recommendations can significantly boost your chances.
✨Tip Number 2
Familiarise yourself with the latest software tools mentioned in the job description, such as Revit and AutoCAD. Consider taking online courses or tutorials to enhance your skills, as demonstrating proficiency in these tools can set you apart from other candidates.
✨Tip Number 3
Prepare to discuss your experience with project management and leading design processes during interviews. Be ready to share specific examples of how you've successfully managed projects from concept to completion, highlighting your leadership and communication skills.
✨Tip Number 4
Research the company’s recent projects and their approach to sustainable design. Being knowledgeable about their work will not only help you tailor your conversation but also show your genuine interest in contributing to their team and values.
We think you need these skills to ace Senior/Principal Mechanical Design Engineer
Some tips for your application 🫡
Tailor Your CV: Make sure your CV highlights relevant experience in mechanical design, particularly in building services. Emphasise your leadership skills and any experience you have with software like Revit, IES, and AutoCAD.
Craft a Compelling Cover Letter: Write a cover letter that showcases your passion for mechanical design and your understanding of the role. Mention specific projects you've worked on that align with the responsibilities outlined in the job description.
Highlight Technical Skills: In your application, clearly outline your technical knowledge in HVAC systems and building regulations. Use examples to demonstrate how you've applied this knowledge in past roles.
Showcase Leadership Experience: Since the role involves mentoring junior engineers, include any relevant experience where you've led teams or supported the development of others. This will show your capability to take on the responsibilities of the position.
How to prepare for a job interview at Pertemps
✨Showcase Your Technical Expertise
As a Senior/Principal Mechanical Design Engineer, it's crucial to demonstrate your strong technical knowledge in HVAC and building services design. Be prepared to discuss specific projects you've worked on, the challenges you faced, and how you overcame them using relevant software like Revit or AutoCAD.
✨Prepare for Client Interaction Scenarios
Since you'll be the main point of contact for clients, practice articulating how you would handle various client scenarios. Think about how you would communicate complex technical information clearly and professionally, as well as how you would manage expectations and resolve any issues that may arise.
✨Emphasise Leadership and Mentoring Skills
This role involves mentoring junior engineers, so highlight your experience in leading teams and supporting others. Share examples of how you've successfully guided less experienced colleagues and contributed to their professional development.
✨Understand the Company’s Projects and Values
Research the company’s recent projects and their approach to building services. Understanding their values and the sectors they operate in will allow you to tailor your responses and show genuine interest in contributing to their success.
