We Are

Decorient is a Building and Civil Engineering Contractor. We are renowned and pride ourselves as a leader in our field.  For us client satisfaction, safety, quality and sustainable solutions coupled with creativity and budget control are in our DNA.

Our heritage is 50 years of international standard construction services. We have been an Indonesian company since 1970 with a close association with one of Europe’s leading construction groups with a footprint in over 30 countries across the globe.

Since May 2021, the new shareholders have completed a management buy-out of the Indonesian subsidiary of BAM International, who decided to refocus on their European home markets.

Our board of directors and shareholders of the company have been part of the success of the company since the 80’s when the know-how and expertise was integrated, adopting and coupling the International standards with Indonesian market and cultural attributes. In recent years we developed a new and dynamic generation of Indonesian management, as we believe the combination of experiences and renewed focus on Indonesian market will allow us to continue growing as leading Indonesian Contractor.

Board of Directors

Arjoto Wisanto
President Director

Arjoto is an Indonesian national who attained a degree as a Master of Science in Civil Engineering from Delft University of Technology, Netherlands in 1988. He started his career in construction by joining PT. Decorient Indonesia in 1989.

Career highlights:
Deputy Project Manager at Wisma Bank Dharmala Realty, Project Manager of 10 story’s Carpark Building, Project Manager of Pondok Club Villas Apartment, MEP Coordinator at AT&T, Ascott Condominium & Service Apartment, Project Manager of Westin Hotel Surabaya (now JW Marriott), Contract Manager at several projects in 1996 and then serving as Deputy Director since 1997 and in 1998 became a Director. Arjoto was appointed as President Director of Decorient Indonesia in 2008 and has served as the leader of the company since then.

“This company has proven to be able to offer the highest opportunity for career development at an international level.”

Antoine de Winter
Director of Operations

Antoine is a Dutch national graduated from Higher Professional Education in Engineering Netherlands in 1983. Having more than 25 years of experience in various projects in Indonesia, he has good blend of international and local knowledge which was the key in building the company’s success in Indonesian market. He started his career in construction by joining the Hollandsche Beton Groep (HBG) in 1983 and was assigned to his first project in Indonesia: Hyatt Regency, Yogyakarta in 1995.

Career highlights:
Construction Manager at Hyatt Regency, Project Manager of The Summit Apartment, Mall Kelapa Gading 5, Tubafa Line 1 – HOLCIM Cement Plant, Contract Manager for several projects. Later on Antoine was assigned as Operations Manager Buildings in charge of all building projects and then serving as Deputy Director since 2020.

“After more than 25 years I still enjoy working in Indonesia where the economic growth provides an attractive perspective for the future of the construction sector.”

Benny Handoko
Director of Strategy and Business Development

Benny is an Indonesian national graduated from Parahyangan Catholic University (UNPAR), Bandung in 2001. He joined BAM Decorient Indonesia in 2015 having more than 10 years of experience in project management.

Career highlights:
He completed three projects successfully in the company as project manager for Unilever Indonesia Headquarters, Tanjung Jati Unit 5&6 Jetty (as Deputy PM) and the latest one being IKEA Jakarta Garden City project. He also led the business strategy and innovation department of the company of which one of the tasks was leading the transition to digital construction within the company. Benny will be part of the new generation of management that will support the evolution of the company further with innovation and strategic development.

“Working for The Right Contractor was the tease from the recruiters when I joined Decorient. Being The Right Contractor is not an easy thing to achieve, since that also means doing everything properly, as how it should be, so eventually we can become our Clients’, Employees’ and Vendors’ Trusted Partner.”


Our purpose is creating values for our stakeholders:



Decorient was first established in 1970 by large Dutch contractors (a.o. Hollandsche Beton Groep) who were entering Indonesian market to compete with other international contractors. The name Decorient stood for Dutch Engineers and Contractors in the Orient.

Interbeton, a subsidiary of Hollandsche Beton Groep (HBG) expanded into the global market and in 1977 acquired the majority shares of Decorient. With this acquisition, Interbeton brought into the company its vast expertise on marine and nearshore marine structures to buildings, airports, bridges and tunnels. The company name remained as PT Decorient Indonesia.

In 2002 the parent company of Interbeton, HBG was merged with BAM and eventually Interbeton (including Decorient) was rebranded as BAM International. The company name changed to PT BAM Decorient Indonesia.

In 2020, due to the change of strategy from BAM to refocus on its European home markets, BAM International decided to divest its operation worldwide. This decision led to a management buy-out of the company which was completed in May 2021. The company name was changed to PT Decorient Partaya Indonesia. The name “Partaya” originated from Kawi (Old Javanese language) which means “trustworthy”.

For more than 50 years, our excellent track record of delivering consistent high-quality product is well-documented. We aim to continue to be the first-choice trusted partner for our stakeholders in construction industry.








We believe that building high performance team and maintaining good relationship with stakeholders need Trust as the foundation.

We value transparency because it is what we expect from our vendors and suppliers – we do not appreciate being kept in the dark. Our commitment to transparency affects how we communicate internally and how we communicate to our clients. We believe it’s incredibly important when companies are putting their faith in us.

It can often be tempting to bend the truth, or sugar coat it, often when things go wrong in embarrassing or harmful ways. But it’s precisely those situations where open and honest communication needs to be absolute. Our commitment to truth is deeper than stating the facts – it extends to situations such as searching the root causes of issues and highlighting them early, proactively. We value truth over comfort.

To establish a long and fruitful relationship, we must start with understanding each other better. Then by understanding the needs, we know how to achieve our stakeholders’ satisfaction. We aim to deliver what we promised, so we could become your reliable partner.

We Work

Being thoughtful in what we do
Work preparation is most important in our project execution. All activities need to follow the procedures in our management system, where we define every minimum step required before executing the job.

We are guided by our values of trustworthiness and open communication. We encourage our employees to be proactive in communication. Our lean and flat organization emphasize the open communication and consensus building rather than communication within a bureaucratic structure.

We have invested in digital construction (BIM) and continue to explore creative solutions to our stakeholders’ needs . We continually seek new ways to improve productivity, sustainability, and safety.

Unity in diversity

Our employees are from diverse background. In the history of our company, we have proven to be able to work efficiently with people from diverse ethnicity and gender balance. We understand and value cultural diversity. We are a company that believes in equal opportunities to all our staff as we believe this leads to improvements in performance and a harmonious working environment.


To help us achieving our purpose in creating values for our stakeholders, we base our business model on:


We are fully embracing digital ways of working to improve the safety, sustainability, and constructability of our projects. We have invested in trainings to ensure our people have the skills matching our ambition.

Our Digital Construction Methods include:






We have experiences in achieving BREEAM, GreenMark and Greenship certification in our Clients’ projects, managing the required processes during construction. We are also a member of Green Building Council Indonesia (GBCI).

Decorient Environmental Policy

Tree Planting
Beach Clean up
Donation for Orphanage


Decorient has adopted a quality management system (Decorient Management System) that complies with the International Standard ISO 9001:2015. This Quality System will provide clients with the assurance that the projects completed by Decorient will be of a consistently high standard.

Decorient Quality Policy


Decorient has adopted an OHS management system that complies with the International Standard ISO 45001:2018.

Decorient Safety Policy   |  Alcohol & Drugs Policy


Our Covid-19

COVID-19 is affecting people globally. At this point, we expect that the majority of people who become infected will experience a mild illness and recover. It may be more severe for others – particularly the elderly or those with an underlying medical condition. All staff are urged to take care of their health by doing the following:

Covid Response - 1

Washing hands frequently

Regularly and thoroughly wash and clean your hands with soap or water of if this isn’t available an alcohol- based hand rub or thoroughly wash them with.

Covid Response - 2-100

Maintaining social distancing

Maintain at least 2 metres (6 feet) distance between yourself and others, especially anyone who is coughing or sneezing.

Covid Response - 3-100

Wearing approved face mask

Face mask to be worn at all time. Face mask have to cover the nose, mouth, and chin area completely. Approved face mask in our projects and offices are medical grade mask, 3 ply cloth mask, or N95 respirator.

Covid Response - 4-100

Avoid touching eyes, nose and mouth

Hands touch many surfaces and can pick up viruses. Once contaminated, hands can transfer the virus to your eyes, nose or mouth. From there, the virus can enter your body and can make you sick.

Covid Response - 6-100

Practicing respiratory hygiene

Make sure you, and the people around you, follow good respiratory hygiene guidance. This means covering your mouth and your nose with a tissue ideally or your bent elbow when you cough or sneeze. Then dispose of that tissue immediately.

Covid Response - 5-100

Staying informed and following advice given by your healthcare provider and the updates / bulletins from our HR Department.

Key Points