About Us
Dex is a Jakarta based sustainable architecture and urban development company. Leveraging imagination and technology, we serve our clients their need to reach the highest value of each projects to shape a more sustainable future.
To perform a smart response to the critical and contemporary urban issues has become DEX mission. We strive to advocate and facilitate our clients to respond more realistically and strategically towards our critical urban issues. Implement smarter, more advance and integrated method and technologies to solve the problems while capturing the highest values of each assets.

Iwan Prijanto Ir, MM, GP
PRESIDENT DIRECTOR
Iwan has gained cross-industry experiences and developed architectural, planning and strategic management competencies. He has focused on “strategic master planning,” professional services that synchronize strategic management thinking with spatial and creative thinking. His major aim is to introduce sustainable & resilient infrastructure and urban transit development. Today, Iwan serves as the President Director at PT DEX Transit and the Chairperson of Green Building Council Indonesia (GBC Indonesia). Previously in 2009-2015 Iwan was in charge as the principal planner and business development at PT. MRT Jakarta where he prepared comprehensive framework of sustainable transit area which seamlessly integrates with its urban railway system.
As also one of the core co-founders of GBC Indonesia, he is also certified as Greenship Professional (Green Building accredited professional), accomplished several certified workshop including transit architecture design from LTA (Land Transport Authority Singapore) and SIA (Singapore Institute of Architecture), and Senior Environmental Development Program from BCA (Building construction authority) Singapore, and Certified training in MRT and transit system development conducted by JICA in Tokyo & Osaka Japan, and Delhi Metro India.

Baju Witjaksana, M.Arch
DIRECTOR
Baju’s professional journey as an architect started in 1994 after he graduated from Delft University of Technology, The Netherlands. In 2001, Baju founded PT Imago Karya Persada, an architecture and interior firm with 2 other partners. Prior to founding PT Imago Karya Persada, he worked among others at Ronald Knappers Architecten Bureau as a junior architect in Leiden, The Netherlands, at PT Grahawita Santika as an in-house architect in Jakarta, and at PT Arthamulia, a furniture factory as a principal of design development.
Through the years, Baju has designed number of residences, office buildings, hospitals, hotels, and laboratoriums. In some projects, Baju had the opportunities to design and build his own design into reality. These opportunities have sharpened his capability and sensibility in design and his managerial skills in building construction. In 2015, Baju has joined with PT Dex Solusi Transit which challenged his experiences contributing in designing and planning an urban transit areas.
This long journey has brought him to experience architectural and interior design, and understanding overall urban design concepts, objectives and critical issues and applies knowledge to tasks and assignments.