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ONECORE is an Australian-based multinational company providing project management, engineering and construction solutions across a broad spectrum of building and construction projects. With our experienced team and global expertise, we are positioned to successfully deliver the largest and most challenging projects world-wide.

We can provide a complete project management solution in association with other specialists or operate as an integrated part of the project team.


To be a global leader in project delivery.

Mission Statement

To contribute to our client’s success through innovation and excellence in project delivery.

Our Values

We believe that teamwork brings together the strength of our diversified expertise to help our clients achieve their objectives. We operate on a one team principle with our clients to understand their needs and objectives, assign the best resources, and exceed their expectations.
At ONECORE we provide opportunities to our people and encourage them to thrive and reach their potential. We create an enjoyable and rewarding workplace and look after and support each other.

ONECORE work to the highest ethical standard and do the right thing, consistently delivering our high standard of service with integrity and personal attention to clients. We live by our core values of quality, honesty and hard work.

We are 100% committed to our clients and are proactive in finding solutions that best achieve their goals. We focus on our clients as individuals and provide a personalised tailored service.

We understand that lasting relationships are the essence of our business so we place close attention to our clients and ensure that we always exceed expectations.


ONECORE services both metro and remote locations across Australia and internationally in the following sectors: 

Urban Skyline



Oil & Gas

truck on dirt

Mining & Resources

Windmills on green field


Office Building

Commercial & Retail

Apartment Building


Military Aircraft


Technology at School




Skate Park

Recreation & Entertainment

Chart & Stethoscope

Health & Aged Care

Display of Stock Market Quotes

Banks & Financial Institutes


Project Management
ONECORE provides a complete Project Management service throughout its phases, from planning through to execution and completion. We also offer individual Project Management services including:

  • Project Mobilisation and Start up

  • Integrated Project Controls (Planning, Cost Control, and Administration)

  • Commercial and Procurement Management

  • Construction Management and Supervision including Daily Data Capture

  • HSE and Quality Management


Engineering & Design  
ONECORE provides estimation and engineering services and in partnership with our broader team of experts we offer a range of engineering and design services including:

  • Concept Design

  • Civil & Structural Design

  • Cost Estimation

  • Drafting Services

  • Value Engineering

  • Building Inspections

  • Pre-Purchase Inspections


ONECORE has extensive construction experience and with our team of specialised subcontractors we offer construction services including:

  • Civil Construction

  • Building Construction

  • Refurbishment Works – Civil and Building

  • Plant Hire

  • Labour Hire


ONECORE undertakes in-house property development and investment and offers property services including:

  • Development

  • Leasing

  • Property Management

  • Building Maintenance

  • Investment


With a reputation built on proven expertise and consistent delivery of safe and cost effective solutions, ONECORE shares extensive experience in delivering valuable service in all our sectors. ONECORE attracts and retains highly experienced and motivated teams to bring together decades of experience in innovation, project solutions and global expertise.
Some of our key project experience includes:

ONECORE has extensive experience in the infrastructure sector in several world geographic areas including Australia, the Middle East, East Asia and India. The team at ONECORE has successfully delivered many iconic projects worldwide with project values of more than one billion US dollars.

A few iconic/key infrastructure projects include:

  • New Museum Project, WA Australia

  • Burj Khalifa, Dubai UAE – The tallest tower in the World

  • Burjside Boulevard Hotel Apartments, Dubai UAE

  • Oceanscape Residential Towers, Abu Dhabi UAE

  • Al Jawhara Residential Tower, Saudi Arabia

  • Lakeside 4 Residential Towers, Dubai UAE

  • Evershine’s Millennium Paradise Mixed Use Development, Mumbai India

  • The Woods Mixed Use Development, Pune India

  • GE Plaza High Rise Commercial Complex, Pune India

  • La Mirage 4 Residential Towers, Pune India

Roads & Civil Works

  • MRWA Northlink Package 2 Highway, WA Australia 

  • Pacific Highway Upgrade W2B Section, NSW Australia

  • Elizabeth Quay Inlet Earthworks, WA Australia

  • Mt Webber Public Road Upgrade, WA Australia


  • Mt Henry Bridge Rail Project, WA Australia 

  • Water Corp Replacement of Bridges, WA Australia 

Water Tanks

  • Water Corp Cunderdin Water Tanks, WA Australia


Mining & Resource
ONECORE has extensive experience in the mining and resource sector. The team at ONECORE has been involved in successfully delivering many projects in the mining and resource sector with project values of more than half a billion dollars.    

A few key mining and resources projects include:

  • Newcrest Mining Telfer TSF, WA Australia

  • Rio Tinto Gove E&I, NT Australia

  • Rio Tinto Western Turner Syncline Phase 2, WA Australia

  • Albemarle Kemerton Lithium Plant NPI, WA Australia

  • Rio Tinto Koodaideri NPI, WA Australia

  • Rio Tinto Paraburdoo, WA Australia

  • Rio Tinto West Angelas Deposit C&D, WA Australia

  • FMG Eliwana Rail Earthworks and Bridges, WA Australia

  • BHP South Flank Project, WA Australia 

  • BHP Coondewanna Airstrip, WA Australia

  • Roy Hill Iron Ore Project, WA Australia

  • Adani Coal Mine Project, QLD Australia 

  • Mt. Pleasant Rail Loop Works, NSW Australia 

  • CPM Sino Iron Project, WA Australia 

  • Arrium Iron Baron Project, SA Australia

Oil & Gas
ONECORE has extensive experience in the oil and gas sector. The team at ONECORE has successfully delivered many projects in the oil and gas sector with project values of more than 100 million dollars.    

A few key oil and gas projects include:

  • Woodside Pluto Site B O&U, WA Australia 

  • Woodside Pluto LNG Tanks, WA Australia 

  • Woodside Pluto LNG Shore Crossing, WA Australia

  • NWS LNG Phase V Project, WA Australia

ONECORE has extensive experience in the Defence sector. The team at ONECORE has successfully delivered many projects in the Defence sector with project values of more than 20 million dollars.    
A few key Defence projects include:

  • Delamere Civil Works Roads Project, NT Australia 

  • Defence Fuel Infrastructure Rectification Project, NT Australia

Burj Khalifa
Our Team

Our success in delivering projects is based on experienced and competent personnel, using proven systems and the ability of our business to adapt and innovate in pursuit of performance excellence in all situations.




Joshua Zaehner

Co-Founder and Director

Joshua is responsible for ONECORE’s overall operations and the implementation of its strategic plan. Joshua is a qualified Civil and Construction Engineer and management professional with over 15 years of experience in multi-discipline construction, mining, oil and gas, infrastructure, defence, property and investment sectors with extensive expertise in project management. Joshua is a leader with a passion for developing high performing teams with a 'can do' attitude to overcome challenges and consistently deliver successful project outcomes. 



Sangram Jadhav

Co-Founder and Director

Sangram is responsible for ONECORE’s overall operations and implementation of its strategic plan. Sangram is a leader and is a highly qualified Project Management Professional (PMP) having graduated with a Bachelors of Civil Engineering and a Post-Graduate in Advanced Construction Management with more than 19 years of experience in the field of project management and implementation. Besides project management, Sangram’s expertise included integrated project controls (planning and cost), site and commercial claim management.



Harsha Srivastava

Director India

Harsha is ONECORE's Director in India, responsible for overall business expansion and providing support for the outsourcing business from Australia. Harsha is a leader with vast experience in managing engineering teams and the seamless coordination between clients and stakeholders. Harsha holds a Bachelor degree in Civil Engineering and a Post-Graduate in Construction Engineering and Management.
In her career as a Structural Designer spanning more than 18 years, she has been instrumental in the design and analysis of countless major structures across the...

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Management Structure

ONECORE is a multinational business governed by a board of directors that oversee both its Australia and India divisions and management teams. These divisions operate both independently within each country and collaboratively leverage our extensive in-house resources and diverse experience to ensure the best team for each project.

Management Structure.png

ONECORE is an Australian-based multinational company with operations in both Australian and India.

Australia Head Office

Perth, Western Australia


India Office

Navi Mumbai, Maharashtra


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