Principal Mechanical Design Engineer Location: Derby Agile / Hybrid Working
Salary: Competitive + Bonus + Excellent Benefits
Lead Mechanical Design on Complex, Low-Carbon Building ProjectsThis 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.
What's on Offer- 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
The Role- 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
About YouEssential:- 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:- 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
The Opportunity- 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
The CompanyA well-established, multi-disciplinary engineering consultancy delivering mechanical, electrical, and low-carbon design solutions across the UK and internationally. With a strong reputation for technical quality, collaboration, and sustainable design, the business works across sectors including healthcare, education, residential, commercial, and industrial.Engineers here benefit from high levels of autonomy, a supportive culture, and genuine career development opportunities within a growing organisation.
ApplyIf you are a Mechanical Design Engineer ready to step into a Principal-level role with greater ownership, influence, and progression, apply now or get in touch for a confidential discussion.