Mechanical / Assistant Mechanical Engineer(HVAC)

Mott MacDonald is a global engineering, management, and development consultancy committed to delivering impactful work that shapes the future.

We are a team of over 20,000 experts working across the world in more than 50 countries.
We are proud to be part of an ever-changing global industry, delivering transformative work that’s defining our future. It’s our people who power that performance. As an employee-owned business, we invest in creating a space for everyone to feel safe and valued and empowered with the right tools and support. 

Whether you want to pursue excellence in your specialism or broaden your experience with flexible roles across our business, you’ll be connected to a community of global experts championing you to be your best. Join us and shape your story with Mott MacDonald, where everyone has the opportunity to be brilliant.

Job Summary:
We are seeking a skilled and detail-oriented HVAC Design Engineer with 4+ years of experience in designing HVAC systems for commercial, residential, and industrial projects in the UK or Europe regions. The ideal candidate will have a strong understanding of regional codes and standards, and proficiency in industry-standard software tools.

Key Responsibilities:

•    Design and develop HVAC systems including load calculations, ductwork and piping layouts, and equipment selection.
•    Perform thermal load calculations using software such as HAP or IES VE.
•    Prepare design markups for BIM team.

•    Prepare equipment schedules and schematic drawings.
•    Prepare detailed HVAC design drawings using AutoCAD and Revit MEP.
•    Coordinate with multidisciplinary teams including architects, structural, and electrical engineers.

•    Conduct clash detection and coordination using Navisworks.
•    Ensure compliance with UK (CIBSE, BSRIA) and Middle East (ASHRAE, local authority) standards and regulations.
•    Participate in design reviews and value engineering exercises.

Required Skills and Qualifications:
•    Bachelor’s degree in Mechanical Engineering or related field.

•    4+ years of relevant HVAC design experience.
•    Strong knowledge of HVAC design principles, equipment, and systems with UK project experience.

•    Proficiency in: HAP (Hourly Analysis Program), IES VE (Integrated Environmental Solutions), AutoCAD, Revit MEP, Navisworks, and other HVAC design tools and simulation software.
•    Familiarity with UK and Middle East building codes and HVAC standards.
•    Excellent communication and documentation skills.

•    Ability to work independently and as part of a team.

Preferred Qualifications:
•    Professional certifications (e.g., LEED, CIBSE membership, ASHRAE).

•    Experience with sustainable and energy-efficient HVAC design.
•    Exposure to BIM workflows and coordination.

We can offer (subject to Company’s policy)

• Agile and safe working environment
• Competitive annual leave and sick leaves
• Group incentive scheme
• Group term life insurance, Workmen’s compensation and Group medical insurance coverage
• Short and Long-term Global employment opportunities
• Global collaboration and knowledge sharing
• Digital Innovation and Transformation

Equality, diversity and inclusion

We put equality, diversity and inclusion at the heart of our business, seeking to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

Agile working

At Mott MacDonald, we believe it makes business sense for you and your manager to choose how you can work most effectively to meet your client, team and personal commitments. We embrace agility, flexibility and trust.