principal mechanical engineer jobs in Sydney, NSW

What if your next role helped shape the future of water in Australia? At WSP, we don’t just design infrastructure — we redefine how communities connect with water. Join a global network of experts, contribute to landmark projects, and do the kind of work the world truly needs. Here, curiosity is celebrated, ideas are welcomed, and careers are crafted as uniquely as the people behind them. Our...

Principal Mechanical Engineer | Thermal & Physics-Led Design | Deep Tech Location: Sydney (Inner West) Package: $160k - $200k + Super + Early Equity The Challenge: First-Principles Engineering This is not a standard machine design role. We are partnering with a heavily backed deep-tech startup who are moving from "lab-proven tech" to "mass-manufacturable product" in under 18 months. To do...

Associate Director/Principal Mechanical Engineer - Building Services - SYD - 160 to 220k Our Client is a Highly Regarded International Multi-Discipline Engineering Consultant with a strong history in Australia delivering some of Australia's Largest projects across Buildings, Transport, Energy and Renewables, Water and more. They have an excellent opportunity for an Industry Experienced...

Downer Rail & Transit Systems is on the lookout for a Principal Mechanical Engineer to lead and support engineering projects with a strong understanding of carbody and bogie structures, ensuring strength, durability, and compliance with rail standards About the role As a Principal Engineer, you will lead the development, coordination, and delivery of complex, multi-disciplinary rail and transit...

Key Points - Manage mechanical aspects of Qantas Airbus fleet - Covered under the Professional Engineers EA - Permanent full‑time position located at the Qantas Corporate Campus in Mascot Qantas Engineering keeps us at the forefront of aviation, caring for and maintaining both the Qantas fleet and aircraft for our customers across the Asia‑Pacific region. Working with state‑of‑the‑art equipment...

Overview Principal Mechanical Engineer - Building Services role at Arcadis. Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people in over 70 countries, dedicated to improving quality of life. Role description We are seeking a Principal Mechanical Engineer to join our Design &...

A leading engineering consultancy in Sydney is seeking a Principal Mechanical Engineer to provide technical leadership on water infrastructure projects. You will collaborate with clients and vendors, mentor teams, and drive innovative solutions while enjoying flexible working arrangements. The ideal candidate will have a strong background in mechanical design and project delivery in the water...

A leading global consultancy in Melbourne is seeking a Principal Consultant in Mechanical Engineering to drive business development and lead project teams. This role requires significant experience in consulting and client management, as the individual will represent the company in the market and build enduring client relationships. Candidates should possess a relevant engineering degree and have...

Senior / Principal Mechanical Engineer - DamsJoin to apply for the Senior / Principal Mechanical Engineer - Dams role at AECOMSenior / Principal Mechanical Engineer - Dams2 days ago Be among the first 25 applicantsJoin to apply for the Senior / Principal Mechanical Engineer - Dams role at AECOMCompany Description"Supported by people, local and global communities who are not only willing to guide...

Title: Principal Mechanical Engineer, Water We support water customers across Australia to provide our communities with the best drinking water and wastewater treatment services, whilst innovating ways to safeguard and secure our country’s water supplies, elevating public spaces and enhancing livability. The Opportunity Sponsorship supported Locations open to Brisbane, Sydney, Melbourne...

Join to apply for the Principal Mechanical Engineer (Water) role at WSP in Australia2 days ago Be among the first 25 applicantsJoin to apply for the Principal Mechanical Engineer (Water) role at WSP in AustraliaGet AI-powered advice on this job and more exclusive features.What if your next role helped shape the future of water in Australia? At WSP, we don't just design infrastructure — we...

A leading rail and transit organization is seeking a Principal Mechanical Engineer based in New South Wales. The role involves leading multi-disciplinary engineering projects while ensuring compliance with standards and encouraging innovation. Requires mechanical engineering degree, technical leadership skills, and the ability to build client relationships. Offers opportunities for professional...

A leading international engineering consultancy is seeking an experienced Associate Director/Principal Mechanical Engineer for their Building Services team in Sydney. The role involves managing major building projects and engaging with clients, requiring recognized engineering qualifications and a strong portfolio in the tier 1 building services sector. Benefits include national and international...

Beca HunterH2O Beca HunterH2O is the Australian water business of one of Asia Pacific’s largest independent advisory, design and engineering consultancies, Beca. We are a collaborative team of 300+ water sector specialists, who are passionate about designing and delivering smart, resilient outcomes that help build healthy communities and sustainable outcomes throughout urban and regional...

A deep-tech startup in Sydney seeks a Principal Mechanical Engineer to lead the mechanical architecture for high-energy reactor systems. The successful candidate will design innovative solutions involving extreme heat and high voltage, transitioning from prototypes to production-ready products. Applicants should have expertise in thermal and fluid dynamics and a strong proficiency in SolidWorks,...

What if your next role helped shape the future of water in Australia? At WSP, we don't just design infrastructure — we redefine how communities connect with water. Join a global network of experts, contribute to landmark projects, and do the kind of work the world truly needs. Here, curiosity is celebrated, ideas are welcomed, and careers are crafted as uniquely as the people behind them. Our...

A leading design and engineering company is seeking a Principal Mechanical Engineer in Sydney, Australia. This role involves leading mechanical design processes for complex building projects, ensuring high-quality outcomes that meet client expectations. The ideal candidate should have over 10 years of experience in the buildings sector, especially in Health and Education, with a strong emphasis...

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. We are more than 36,000 people, in over 70 countries, dedicated to improving quality of life. Everyone has an important role to play. With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact...

A leading engineering firm in Sydney is seeking a Principal Mechanical Engineer to drive mechanical services design across various projects. The position requires over 10 years of mechanical engineering experience, with at least 5 years in Australia. Responsibilities include managing designs and liaising with clients and stakeholders. This role offers a supportive and innovative environment along...

A leading engineering firm in Australia is seeking a Principal Structural Engineer to lead complex rail and transit systems. You will develop and deliver engineering solutions, drive innovation, and foster client relationships. The ideal candidate holds a degree in Mechanical Engineering and has experience in structural design for rollingstock. This role offers a flexible work environment and...