Your newpany
You’ll be joining a well‑established building services consultancy recognised for delivering technically strong, sustainable and low‑carbon engineering solutions. The Derby office supports a wide mix of projects acrossmercial, residential, healthcare, education, industrial and public sector schemes. This is a collaborative, people‑focused environment where senior leaders are encouraged to influence strategy, mentor others and shape the future development of the team.
Your new role
As a Principal Mechanical Design Engineer, you will take a leading role in guiding project delivery, raising technical standards and representing the consultancy at a senior level. You will oversee mechanical design work from early concept through topletion, ensuring accuracy, coordination and robust engineering oues across multiple projects.You’ll act as a trusted contact for key clients, chair and contribute to design meetings, and support the growth and development of junior and intermediate engineers. Your work will include reviewing and producing calculations, drawings and specifications, setting design strategies, selecting appropriate plant and technologies, and ensuring low‑carbon and sustainable principles are embedded in every solution.The role also involves attending site inspections, supporting quality assurance, helping to secure repeat business through strong client relationships, and playing a central role in the ongoing technical development of the mechanical team.
What you'll need to succeed
A degree, HNC or HND in Mechanical or Building Services Engineering
1. Strong experience in mechanical building services design at a senior or principal level
2. Proficiency in design software such as Revit, Amtech, Relux/Dialux and Microsoft Office
3. Strong understanding of British Standards, Building Regulations and industry best practice
4. Proven ability to engage with clients, lead meetings and influence design direction
5. Experience integrating low‑carbon, renewable and energy‑efficient systems
6. Awareness of BREEAM and broader sustainability frameworks
7. Understanding of electrical interfaces to support multidisciplinary coordination
8. Professional membership (, CIBSE or IMechE) or active progression toward Chartership
9. Confidentmunicator with leadership skills and a collaborative approach
What you'll get in return
Salary between £55,000 and £65,000, dependent on experience and seniority
10. Structured progression pathways and strong CPD/Chartership support
11. Agile and flexible working arrangements
12. Generous holiday entitlement with opportunities to buy or sell leave
13. Enhanced sickness, maternity, paternity and family‑friendly policies
14. Exposure toplex, interesting and sustainability‑focused project work
15. Cycle‑to‑work and electric vehicle schemes
16. Eye care support, Employee Assistance Programme and funded team‑building activities
17. Referral bonuses and broader staff benefits
18. Opportunities to take part in charitable, social andmunity initiatives