Principal Mechanical Engineer at AECOM

Seniority in posting: entry

Setup: Hybrid
Location: Sydney, New South Wales
Type: Full-time
Level: lead/mgmt
Posted: Sep 25, 2026

Description

AECOM is hiring a Principal Mechanical Engineer for its Buildings & Places team in Sydney to lead mechanical design and delivery on major defence and data-centre projects. The role involves multidisciplinary project work, technical reviews, mentoring junior engineers, and quality control of design calculations and drawings. Candidates should have 8–10 years of building-services or senior mechanical-engineering experience, strong HVAC and mechanical design expertise, and experience across defence and data-centre projects. Australian citizenship is required, while previous or current defence clearance is highly regarded. The position offers flexible and hybrid work options, additional annual leave, professional development, and other benefits.

Required Skills

Mechanical design
HVAC engineering
Project delivery
Client management
Quality control

Additional Information

Minimum Education: Bachelor of Engineering in Mechanical Engineering or Building Services Engineering
Required Previous Experiences: 8–10 years of building-services consultancy experience or significant senior mechanical-engineering design experience
Design experience across defence and data-centre projects
Client management, project delivery, and stakeholder communication experience
Preferred Qualifications: Previous or current defence clearance
Translation Company Name: AECOM

About AECOM

AECOM

infrastructure consulting

Its services include advisory, architecture and design, construction management, engineering, environmental services and program management, across markets including cities, energy, transportation, water, healthcare and national governments. Its global team comprises nearly 50,000 planners, designers, engineers, scientists, program and construction managers and other professionals.

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