Senior Mechanical Design Engineer

Apex Resourcing Solutions Ltd.; Chesham; Hybrid; GBP 55,000 - 85,000; Full time

Job summary

Apex M&E Solutions in Chesham is seeking a Senior Mechanical Design Engineer for a hybrid, permanent role. You will lead mechanical building services design from brief to delivery, align with UK standards, and coordinate with other disciplines.

You will own projects, liaise with clients, and mentor junior engineers while helping to develop internal design standards. UK residency is required; minimum 7 years of experience; responsibilities include surveys, energy assessments, and compliance

Qualifications

• Minimum 7 years of mechanical building services design experience.
• Strong knowledge of UK standards and regulations applicable to building services.
• Excellent communication and mentoring abilities for junior engineers.

Responsibilities

• Develop mechanical services designs from brief to detailed design and delivery.
• Work with clients, discuss requirements and present recommendations.
• Make technical decisions and manage project costs and schedules.

Skills

Mechanical design

Building services

Client liaison

Project leadership

Job description

Mechanical & Electrical, Senior Appointments

Hybrid, Permanent

Speciality: Design, Hevacomp, Project Management

UK Residency Required: Yes

Apply by: 02/12/2026

Min Experience: 7 years

The Opportunity

Looking for greater ownership of your projects and more scope to apply your engineering judgement?

Apex M&E Solutions is recruiting a Senior Mechanical Design Engineer for an established building services consultancy in Chesham.

Reporting to the Principal Design Engineer, you’ll develop mechanical services designs from the initial brief through detailed design and project delivery. You’ll work directly with clients, make technical decisions and manage the costs and programmes associated with your projects.

What makes this role worth considering?

• Project ownership: develop the engineering solution and remain involved as the project progresses.


• Direct client contact: discuss requirements, explain your recommendations and maintain relationships.


• Technical breadth: combine detailed design with building surveys, energy assessments and compliance reports.


• A role in developing others: guide engineers, technicians and trainees, and contribute to internal design standards.

What you’ll bring

You’ll have a strong background in mechanical building services design and be comfortable taking responsibility for your work.

You should be confident developing designs, applying relevant UK standards and regulations, coordinating with other disciplines and managing project deadlines and costs. Experience undertaking surveys, preparing technical reports and supporting less experienced colleagues will also be valuable.