Principal Mechanical Engineer – Building Services

Company: AECOM
Apply for the Principal Mechanical Engineer – Building Services
Location: Perth
Job Description:

Overview

As a Senior Mechanical Engineer in AECOM’s Buildings & Places team, you will lead mechanical design for high-profile, multidisciplinary projects across defence and data-centre sectors. You’ll work within a collaborative, cross-functional environment to deliver innovative, cost-effective solutions from concept to completion. You’ll influence design reviews and client engagement, mentoring junior engineers and ensuring high standards. This role offers impact through shaping major Australian projects with a global engineering leader.

Pay / Benefits

  • Hybrid work options
  • Up to 6 weeks additional annual leave
  • Flex public holidays
  • Continuous learning and development
  • Financial assistance for further study plus paid study leave
  • Global career opportunities

Responsibilities

  • Lead mechanical design and delivery for major client projects from concept through to completion
  • Apply extensive design experience to deliver innovative, practical, and cost-effective solutions across projects of varying size and complexity
  • Participate in technical reviews and design assurance to meet high standards
  • Collaborate within multidisciplinary engineering teams and contribute to interdisciplinary reviews
  • Build strong relationships with clients and stakeholders to drive project delivery
  • Mentor and develop junior engineers to grow local and national teams
  • Undertake quality control reviews of design calculations, drawings and technical documentation

Key requirements

  • 10+ years in Building Services consultancy or senior-level Mechanical Services design experience
  • Strong technical design experience across HVAC and mechanical engineering
  • Experience delivering defence and/or data-centre projects
  • Proven client management, project delivery and stakeholder engagement
  • Ability to manage competing priorities, communicate effectively, and meet deadlines
  • Bachelor’s degree in Mechanical Engineering, Building Services Engineering or related discipline
  • Strong knowledge of Australian building services projects, codes and standards
  • Australian Citizenship required; defence security clearance highly regarded
  • Collaborative mindset
  • Client-focused approach
  • Effective communication
  • HVAC design
  • Mechanical design and delivery
  • Design reviews and design assurance

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Posted: October 10th, 2026