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.
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.
As an employee-owned business, our people don't just contribute to projects, they take ownership of them.
You'll work alongside some of the industry's most respected technical specialists, delivering complex and critical infrastructure that supports the way businesses, communities and economies connect and operate.
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 aSenior Mechanical Engineerto 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 AS****
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
Delivering complex, high-profile projects
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.
What We Believe
HDR is our company.
Together, we build on each other's life experiences and perspectives to make excellent things possible every day.
This shapes our collaborative 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.
Primary Location:Australia-NSW-Sydney
Other Locations:Australia-VIC-Melbourne
Industry:Building Engineering
Schedule:Full-time
Employee Status:Regular
BusinessClass:Building Mechanical
Job Posting:Aug 20, ****
At HDR, we are committed to the principles of employment equity.
We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.
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📌 Senior Mechanical Engineer (Building Services) (New South Wales)
🏢 Hdr
📍 New South Wales