Senior Mechanical Engineer

Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Everyone belongs at AECOM

We’re committed to diversity, equity, inclusion, and belonging - because great ideas come from diverse perspectives. AECOM is proud to be a Fortune 500 Most Admired Company, a WGEA Employer of Choice for Gender Equality, #Work180 Equitable Workplace Awards 2025 Winner and an AWEI Bronze Tier LGBTQ+ Inclusive Employer.

Provide technical delivery and project leadership in this Senior Mechanical Engineer role, contributing to the successful delivery of moderate to large-scale building services projects. You will apply your technical expertise across design and project delivery while supporting project managers, collaborating with multidisciplinary teams and building strong client relationships.

There is some flexibility on location for this role and whilst our first preference would be Hamilton, we are open to considering candidates in Auckland or Wellington too.

This role offers the opportunity to further develop your technical and professional capability while contributing to high-quality project outcomes and strengthening AECOM’s building services presence in New Zealand. You will play an active role in project delivery, client engagement and continuous improvement, working closely with teams across New Zealand and Australia.

You’ll also gain exposure to large-scale, technically challenging and high-profile projects across Australia and the wider ANZ region, working alongside leading specialists and contributing to projects that push innovation in healthcare, aviation and complex infrastructure.

• Contribute to the design and delivery of mechanical building services projects, ensuring outputs meet quality, time and budget expectations.
• Support project management activities including coordination, resource planning and managing competing priorities across multiple projects.
• Build and maintain effective client and stakeholder relationships, contributing to business development and repeat work opportunities.
• Collaborate with multidisciplinary teams to deliver coordinated, high-quality design solutions across a range of sectors.
• Provide guidance and mentoring to junior engineers, supporting knowledge sharing and team development.

The following qualifications and experience are highly desired, but if you don’t tick all the boxes you could still be a great fit for this role. Please apply, all applications will be considered.

• A relevant tertiary qualification in mechanical engineering or similar.
• 5+ years’ experience in mechanical engineering (building services would be advantageous)
• Experience across a range of mechanical engineering project types.
• Experience in healthcare projects would be highly regarded.
• Demonstrated experience contributing to or managing projects, with the ability to handle multiple priorities, timelines and stakeholders.
• Ideally working towards Chartered (CPEng) status.
• Strong communication and interpersonal skills, with the ability to build relationships with clients and internal teams.
• Understanding of New Zealand building services standards and codes, or the ability to adapt from comparable international environments.
• Commercial awareness and an understanding of project delivery requirements within a consulting environment.

Why you’ll love working with us

• Flexible work arrangements available, aligned with the market and client facing role requirements
• Purchase up to 6 weeks additional annual leave per year         
• Volunteer and representation leave
• Flex public holidays – swap Easter or other holidays for ones that suit you better

Ready to push the limits of what’s possible?

We welcome applications from individuals of all backgrounds, including those with disabilities, additional health or mental health needs, and/or neurodiverse conditions. If you require any adjustments during the hiring process, please let us know.

Applications are reviewed as they come in, and the role may close earlier than expected, so if this opportunity sounds like you, we encourage you to apply as soon as possible.

Learn more about life at AECOM: LinkedIn, Facebook , Instagram, X, YouTube - explore our AECOM voices, employee stories, latest projects, and much more!

About AECOM 

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.