Principal Mechanical Design Engineer
Location: Derby | Agile / Hybrid Working
Salary: Competitive + Bonus + Excellent Benefits
Overview
Lead Mechanical Design on Complex, Low-Carbon Building Projects. This is a key hire within a growing building services consultancy, offering the opportunity to take ownership of mechanical design delivery across technically challenging, multi-sector projects. You will operate as a project leader and technical authority, influencing design standards, mentoring engineers, and working directly with clients across the full project lifecycle. With a strong pipeline of sustainable, design-led projects, this role offers both technical depth and clear progression into senior leadership.
Benefits
* Clear progression pathway into senior leadership
* Agile / flexible working model
* Generous annual leave (with buy/sell options)
* Enhanced family leave policies
* Cycle to Work and Electric Vehicle schemes
* Employee Assistance Programme and wellbeing support
* Exposure to technically challenging, sustainability-focused projects
* Regular team, social, and charitable initiatives
Responsibilities
* Lead mechanical design delivery across projects, from concept through to completion
* Act as Project Leader, managing design coordination and client interaction
* Produce and oversee calculations, specifications, and detailed design outputs
* Drive technical excellence within the team, mentoring junior engineers
* Contribute to low‑carbon and sustainable design strategies, including renewable integration
* Attend and lead client and design team meetings, influencing key decisions
* Support ongoing client relationships and repeat business development
* Step into a Principal‑level role with real project ownership and influence
* Work on diverse, technically complex projects across multiple sectors
* Play a key role in delivering low‑carbon and net‑zero building solutions
* Develop into a senior leadership or client‑facing strategic role
* Join a consultancy where engineers have autonomy and visibility across projects
Required Qualifications
* Degree (or HNC/HND with experience) in Mechanical or Building Services Engineering
* Proven experience in mechanical design within building services consultancy
* Strong knowledge of HVAC systems, building regulations, and British/European standards
* Experience using design tools such as Revit, Amtech, Relux/Dialux
* Ability to lead projects and coordinate within multi‑disciplinary MEP teams
* Strong communication skills with client‑facing experience
Desirable Qualifications
* Working towards or achieved Chartered status (CIBSE/IET)
* Experience across sectors such as healthcare (HTMs), commercial, or residential
* Knowledge of BREEAM and sustainable building design principles
* Understanding of renewable technologies and embedded generation systems
* Broad awareness of electrical systems to support multidisciplinary collaboration
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