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About Us

Dex is a Jakarta based sustainable architecture and urban development company.

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 advanced and integrated methods and technologies to solve the problems while capturing the highest values of each asset.

Leadership

Iwan Prijanto

Iwan Prijanto

CEO

Architect with more than thirty years of practice in sustainable development. Chairman of the Board of Experts at the Green Building Council Indonesia (GBCI) and the Council's former Chairman. Lead authority behind several of Indonesia's flagship Greenship Platinum certifications, including the KIT Batang Neighborhood Plan and the Bali Turtle Island Development.

Baju Witjaksana

Baju Witjaksana

COO

Architect educated at Delft University of Technology in the Netherlands, with deep specialisation in heritage and architectural preservation in collaboration with IAI Jakarta. Brings comparative European and Indonesian perspectives to questions of urban form, density, and continuity with the existing fabric of Indonesian cities.

Collaboration ecosystem

An ecosystem where strategy, design, technology and certification converge.

DEX operates through a collaborative ecosystem that unites expertise across architecture, engineering, environmental science, and digital innovation. Through these partnerships, DEX leverages the strength of national and global networks.

Supported by our DEX Smart System platform, this ecosystem enhances real-time monitoring, data transparency, and adaptive management, ensuring that each project evolves toward higher sustainability performance over time.

This collaborative model lets us deliver comprehensive sustainability outcomes — turning every project into a smart, regenerative, and future-ready development that contributes meaningfully to the global transition toward a net-zero built environment.

Company profile

The full profile, including services, methodology and selected projects.

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