HVAC Estimator/Mechanical Engineer
1 day ago
Title: Estimator / Mechanical Engineer HVAC
Location: Sydney, NSW
Must have Australian permanent residency or citizenship and right to work in Australia
About Air Theory
Air Theory is a progressive mechanical services company redefining the standard in HVAC and refrigeration design, installation, and maintenance across Australia. We combine technical precision with a passion for energy efficiency, delivering sustainable comfort solutions for both commercial and residential environments.
Our focus is on smarter systems, cleaner air, and better buildings — and we're growing fast. As we expand our NSW operations, we're seeking a motivated Estimator / Mechanical Engineer to join our Sydney team. This is a rare opportunity to work directly alongside the company owner, contributing to innovative projects that shape how people live and work.
The Role
As an Estimator / Mechanical Engineer, you'll play an integral role in both the design and delivery of HVAC projects — balancing technical expertise with creative problem-solving. Your work will span concept design, estimation, documentation, and collaboration with architects, builders, and clients.
Key Responsibilities:
Develop and estimate HVAC system designs using industry-standard tools and methodologies.
Prepare and review technical drawings, schematics, and documentation.
Provide accurate material and labour take-offs, tender submissions, and cost analysis.
Liaise with clients, architects, builders, and subcontractors to ensure project alignment and design intent.
Undertake site visits for measurements, inspections, and verification of scope.
Integrate sustainability and energy efficiency principles into all design considerations.
Maintain compliance with AS/NZS 3666, AS 1668, and NCC Section J.
Support project management activities and design reviews as projects progress.
Required Skills & Qualifications:
Bachelor's degree in Mechanical Engineering or a related discipline.
Proficiency in AutoCAD and Revit is essential.
Strong knowledge of HVAC principles, systems, and controls.
Excellent communication and analytical skills, with a solutions-driven mindset.
Workplace & Perks
Mentorship: Work side-by-side with the company owner and senior engineers, gaining direct exposure to strategy, design, and delivery.
Location: Based at The Commons, Surry Hills — a modern co-working environment surrounded by innovation, creativity, and exceptional amenities.
Culture: We value flexibility, autonomy, and a balanced lifestyle. You'll be part of a collaborative, forward-thinking team that encourages curiosity and personal growth.
Opportunity: A hybrid role bridging technical design and commercial strategy — ideal for engineers who want to grow into leadership or business development roles.
Why Join Air Theory
At Air Theory, we're not just installing HVAC systems — we're shaping the future of indoor environments. If you're driven by design excellence, sustainability, and innovation, this is your chance to grow with a company that's redefining mechanical services in Australia.
-
Engineer Specialist
5 days ago
Surry Hills, New South Wales, Australia Endeavour Group Full time $80,000 - $120,000 per yearAbout UsLet's create a more sociable future togetherAt Endeavour, we're totally into what we do. With a portfolio that includes Dan Murphy's, BWS, ALH Hotels, Pinnacle Drinks and more, we love to bring people together. Together we share our passion for our products and industry; it's what inspires us to dream big, and continue to create new experiences for...
-
NSW/ACT Engineer Specialist
2 weeks ago
Surry Hills, New South Wales, Australia Endeavour Group Full time $90,000 - $120,000 per yearAbout UsLet's create a more sociable future togetherAt Endeavour, we're totally into what we do. With a portfolio that includes Dan Murphy's, BWS, ALH Hotels, Pinnacle Drinks and more, we love to bring people together. Together we share our passion for our products and industry; it's what inspires us to dream big, and continue to create new experiences for...
-
Lead Engineer
2 days ago
Surry Hills, New South Wales, Australia Safewill Full time $120,000 - $180,000 per yearBuild, Lead, ElevateAt Safewill, we're setting a new benchmark for modern software in the end-of-life space. As a Lead Engineer, you'll drive both delivery and technical excellence across a cross-functional squad - guiding system architecture, mentoring engineers, and ensuring we ship high-quality software at pace.You'll sit at the heart of product delivery...
-
Senior Production And Sales Estimator
2 days ago
Baulkham Hills, New South Wales, Australia Worthington Homes Full time $90,000 - $120,000 per yearCompany DescriptionAt Worthington Homes, creating your dream home is about more than just building a structure—it's about crafting a space that speaks to your individuality. We set trends with our designs, whether it's a Hamptons Haven, a Modern Mediterranean Villa, or a striking Box Modern design. We tailor every detail to reflect your personal vision,...
-
Mechatronics Engineer
7 days ago
Orchard Hills, New South Wales, Australia Parklife Metro Full time $80,000 - $120,000 per yearJoin a Landmark Metro Station ProjectParklife Metro Has Been Awarded The Sydney Metro SSTOM Package, a $5 Billion Public-Private Partnership (PPP) Project That Will Transform Western Sydney. This Major Infrastructure Package IncludesSix brand-new metro stations from St Marys to the new Aerotropolis12 new metro trains and core rail systemsA state-of-the-art...
-
Electrical Engineer
2 days ago
Orchard Hills, New South Wales, Australia New Era Electrical Services Pty Ltd Full time $80,000 - $120,000 per yearProject Engineer Required – Western Sydney Airport Metro – Orchard HillsNew Era Electrical Services (NSW) Pty Ltd is a well-established and reputable Electrical & Communications company specialising in the electrical industry. As our business continues to grow, we are seeking an experienced and proactive Project Engineer to join our Electrical Services...
-
Experienced Coastal
2 weeks ago
Surry Hills, New South Wales, Australia BMT Full time $120,000 - $180,000 per yearDescriptionBMT is a leading global consultancy in design, engineering, science, and risk management in the maritime sector, known for excellence and innovation.With 1,300+ experts across the UK, Europe, Asia, Australia, and the Americas, we help clients make informed decisions by delivering practical solutions, with the environment and sustainability at...
-
Engineering Manager
7 days ago
Orchard Hills, New South Wales, Australia OPAL. Full time $120,000 - $180,000 per yearDiscover Opal…We manufacture goods that you see, touch, and use every day and our customer base includes some of the biggest names in FMCG, Retail and Fresh Produce.We stand for innovation, smart solutions, and sustainabilityDiscover the opportunity…As one of the largest packaging companies in Australia and New Zealand, Opal Specialty Packaging provides...
-
Engineering Manager
7 days ago
Orchard Hills, New South Wales, Australia Opal Full time $120,000 - $180,000 per yearJob description:Discover Opal…We manufacture goods that you see, touch, and use every day and our customer base includes some of the biggest names in FMCG, Retail and Fresh Produce.We stand for innovation, smart solutions, and sustainabilityDiscover the opportunity…As one of the largest packaging companies in Australia and New Zealand, Opal Specialty...
-
Automation Sales Engineer
3 days ago
Seven Hills, New South Wales, Australia Festo Pty Ltd Full time $90,000 - $120,000 per yearAutomation Sales Engineer - Sydney Office, Seven Hills, NSW.Cutting edge industrial automation technologyEnviable client base with untapped market growth opportunitiesFlexible working environment and social cultureWho we are:Festo, we are the forefront of industrial automation. We foster sustainable growth and keep the world moving.As the world population...
