Mechanical Design Engineer - HVAC & Building Services

J&T Business Consulting; Chelmsford; On-site; GBP 45,000 - 65,000; Full time

Job summary

A respected mechanical services firm in Chelmsford seeks an experienced Mechanical Design Engineer to lead mechanical and HVAC systems design. Candidates should have a degree in Building Services or Mechanical Engineering, proficiency in AutoCAD, and a commitment to high-quality engineering solutions. The role offers a competitive salary package and the opportunity to work on diverse projects in a collaborative environment.

Benefits

Competitive salary package

Opportunity for professional growth

Collaborative team culture

Qualifications

• Proven experience in mechanical design within the building services industry.
• Experience working across commercial, healthcare, and educational environments.
• Solid understanding of CIBSE, BREEAM, and Building Regulations.

Responsibilities

• Lead and contribute to the design and delivery of mechanical and HVAC systems.
• Prepare detailed design calculations, drawings, schematics, and technical specifications.
• Conduct site surveys and provide on-site technical support when required.

Skills

Mechanical design

Teamwork

Communication

Attention to detail

Education

Degree in Building Services Engineering or Mechanical Engineering

Tools

AutoCAD

MepWorx

Job description

Overview

Mechanical Design Engineer – HVAC & Building Services. Location: Chelmsford, CM2 5LB. Salary: £45,000 – £65,000 per annum (depending on experience). Job Type: Full-time, Permanent.

About the Role

An exciting opportunity has arisen for an experienced Mechanical Building Services Design Engineer to join a long-established and respected mechanical services firm. The company specialises in the design and installation of HVAC and plumbing systems for a diverse range of projects across Essex and surrounding counties, including commercial, healthcare, and education sectors.

This role is ideal for a motivated engineer who enjoys working collaboratively in a dynamic and technically driven environment, delivering innovative mechanical design solutions from concept to completion.

Key Responsibilities

• Lead and contribute to the design and delivery of mechanical and HVAC systems for various projects.
• Prepare detailed design calculations, drawings, schematics, and technical specifications.
• Conduct site surveys and provide on-site technical support when required.
• Collaborate with clients, architects, contractors, and project stakeholders to ensure coordinated and efficient designs.
• Ensure all designs comply with UK Building Regulations, CIBSE guidelines, and meet sustainability and BREEAM standards.
• Review and evaluate designs from suppliers and subcontractors to ensure quality and compliance.
• Participate in internal design reviews, contributing to continuous improvement and innovation within the design team.

Experience & Qualifications

• Degree, HND, or HNC in Building Services Engineering, Mechanical Engineering, or equivalent qualification.
• Proven experience in mechanical design within the building services industry.
• Experience working across commercial, healthcare, and educational environments.
• Proficient in AutoCAD and relevant design software such as MepWorx.
• Solid understanding of CIBSE, BREEAM, and Building Regulations.
• Excellent communication, teamwork, and client-facing skills.
• Proactive, detail-oriented, and committed to delivering high-quality engineering solutions.

What’s on Offer

• Competitive salary package based on experience (£45,000 – £65,000).
• Opportunity to work on diverse and technically challenging projects.
• Supportive environment that encourages professional growth and ongoing training.
• Collaborative and forward-thinking team culture.