Senior Mechanical Engineer (Building Services) - ( 195112 )

About Us

At HDR, we specialise in engineering, architecture, environmental and construction services. Our global team of more than 15,000 employees is united by our values and strengthened by our employee-owned culture. We collaborate across disciplines, leverage global expertise, and empower our people to create solutions that make a lasting impact.

Design the Critical Environments Powering a Digital Future

At HDR, we're doing something different.

Engineering What's Next

HDR delivers some of Australia's most complex and high-performing facilities, including hyperscale data centres, critical infrastructure and mission- critical environments.

These projects demand technical excellence, innovation and close collaboration across disciplines. As part of our National Building Engineering Services team, you'll play a key role in leading the development of mechanical engineering solutions that are efficient, resilient and built for the future.

The Opportunity

We're growing our Building Engineering Services team in Melbourne and Sydney and are looking for a Senior Mechanical Engineer to support the delivery of technically challenging projects across our expanding Data Centre, Mission Critical and Building Engineering portfolio.

This opportunity is ideally suited to an experienced consulting engineer who enjoys taking ownership of design delivery, solving complex technical challenges and contributing to high-quality engineering outcomes across the full project lifecycle.

Working closely with our national mechanical team, you'll play a leading role in project delivery from concept through to construction, developing practical and innovative HVAC and building services solutions within a multidisciplinary design environment. You'll operate with a high degree of autonomy while supporting the growth and technical capability of the broader team.

In This Role You Will

- Lead the delivery of mechanical design packages from concept through to construction delivery
- Perform complex HVAC engineering calculations, system selection and design development
- Prepare and review coordinated engineering documentation, specifications and technical reports
- Take ownership of the delivery of compliant, high-quality mechanical building services solutions
- Coordinate effectively across disciplines to resolve design interfaces, risks and technical challenges
- Collaborate closely with architects, engineers,



clients and specialist consultants across multidisciplinary projects
- Provide technical guidance and mentoring to developing engineers and designers
- Participate in and contribute to technical reviews, design quality processes and best-practice initiatives
- Support site inspections, contractor queries and construction phase services
- Contribute to project planning, resource coordination and successful project delivery outcomes
- Support continuous improvement and technical excellence across the national mechanical team

What We're Looking For

- Degree-qualified Mechanical Engineer
- Typically 6-12 years' experience in a consulting engineering environment
- Demonstrated experience delivering mechanical building services design projects with minimal supervision
- Strong HVAC design capability and advanced technical problem-solving skills
- Experience preparing and reviewing engineering reports, specifications and technical documentation
- Strong understanding of Australian codes, standards and regulatory requirements, including NCC and AS1668
- Proven ability to coordinate across disciplines and manage design interfaces
- Strong communication, stakeholder management and collaboration skills
- Proactive approach with a commitment to technical excellence and quality outcomes
- Interest in developing broader project delivery, commercial awareness and leadership capability

Highly Regarded

- Data Centre or Mission Critical project experience
- Experience undertaking HVAC heat load calculations and system sizing, ideally using Camel software
- Experience with pipe sizing and ductwork design for HVAC systems
- Experience with Revit, Navisworks, ACC or other design coordination platforms
- Exposure to health, defence, education, industrial, commercial, sports and aquatic or mixed-use projects
- Chartered Professional Engineer (CPEng) status

Why Join HDR?

- Employee ownership model - share in the success you help create
- Data centre and TMT exposure - work on critical infrastructure shaping digital economies
- Collaborative culture - learn from experienced leaders and technical specialists




- Technical excellence - contribute to innovative and complex engineering solutions
- Real impact - deliver projects that shape how people connect, grow and thrive
- Career growth - develop toward technical leadership, project leadership or discipline leadership pathways

Why Our Roles Are Different

This is more than just another role.

You’ll be joining a team that is:

- Actively growing across NSW, VIC & QLD
- Backed by a strong national and global business
- Investing in technical excellence and innovation
- Offering a genuine opportunity to grow your technical capability, leadership skills and career

At HDR, you're not just part of the team - you're part of the business. #LI-CG3

What We Believe

HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our cooperative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment

As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.

Our Commitment

HDR is committed to fostering an inclusive and diverse work environment and is proud to be an equal opportunity employer. We welcome applications from all qualified and/or experienced candidates, regardless of gender identity or expression, race or ethnicity, sexual orientation, age, or religious and political beliefs. This includes encouragement for veterans.

HDR acknowledges the Traditional Owners and Custodians of the lands on which we, our clients and communities live and work. As part of our commitment to reconciliation and diversity, we encourage Aboriginal and Torres Strait Islander peoples to apply. Join us in making a meaningful impact and contributing to an inclusive community.

Primary Location

Australia-NSW-Sydney

Other Locations

Australia-VIC-Melbourne

Schedule

Full-time

Employee Status

Regular

BusinessClass : Building Mechanical

Job Posting

Aug 20, 2026

At HDR, we are committed to the principles of employment equity.

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