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Board of Directors

Category: Profile

martinusMARTINUS S. SINARYA, President Director

Born in 1960, Martinus Sinarya completed his Civil Engineering degree at the Catholic University of Parahyangan, Bandung, in 1986.  In 2009 he was entrusted to manage PT Kirana Megatara and its subsidiaries serving as its President Director.  

Prior to his current position, he was associated with PT Lintas Adhikrida between 1998-2007 first as its Managing Director, and later as the President Director.  Part of the period, that is between 2001-2007, has seen him running the footwear factory, PT Adis Dimension Footwear, in the capacity of Deputy President Director, and subsequently the President Director.  Deputy President Director was also his highest position during his spell with  the previous firm, PT Chungsan Mitra International (1995-1997).  Indeed, it was part of a remarkable career ascension during the 1992-1997 period, where he held the positions of General Manager and Managing Director at PT Binabusana Internusa (1992-1997), a garment company, while simultaneously became the General Manager in two other affiliates, PT Bina Sandang Internusa and PT Mims Mitra Busana (1992-1995).  His stellar career all started when he joined PT Astra International Tbk, and successfully rose to occupy the position of Technology Development Manager.


Born in Palembang in 1966, Daniel T. Kristiadi earned his Industrial Engineering degree from the National Chiao Tung University, Taiwan in 1990, and his Master of Business Administration degree from the Macquarie University, Sydney, Australia in 1998.

His career began with the duty as Quality Assurance Representative at Payless Shoe Source, Inc., Taipei, in 1990.  Soon afterwards, he joined with PT Amcol Graha Electronics Industries, ending his time there as the Production Control Manager.

Prior to being recruited into the Triputra Group in 2012, he worked at the Century Healthcare in a Managing Director capacity from 1998 to 2011.


Graduated from the Bogor Institue of Agriculture, Bogor, Indonesia with a degree in Agriculture Economics/Agribusiness in 1995, followed by a Masters of Commerce (Finance) degree two years later form the University of New South Wales, Sydney, Australia, Jenny Widjaja has steadily built up her career working with reputable firms. Her professionalism in finance was further enhanced when awarded the Deputy Manager of investment certificate from BAPEPAM (Indonesia's Security Exhange Commission) in 2001, and through the achievement of a Chartered Financial Analyst (CFA) from the CFA Institute in 2004.

Before serving her current position as the Chief Executive of Finance at Kirana Megatara, and before her arrival with the Triputra Group in 2011, she had assumed key positions at various corporations. In 1998 she became the Treasury Supervisor at PT Jakarta International Hotel and Development Tbk, and Senior Investment Manager at PT AXA Service Indonesia, two years later. She took the responsibility of the Division Head of Accounting, Tax and Inverstor Reations, at PT Adira Dinamika Multi Finance Indonesia in 2005, became the Head of Investment at PT Panin Life Tbk, in 2006, and served in the capacity of Vice President of Financial Planning & Project Division at PT Bank Danamon Indonesia, Tbk, from 2010-2011.

ACHMAD EFFENDI, Independent Director efendi

Achmad Effendi is 45 years old. He earned Bachelor of Economic from Muhammadiyah University, Malang in 1996.

He has been serving as Director of Kirana Megatara since 2017. He has held various essential positions throughout his career, such as Chief Region for Jambi Area, West Kalimantan Area and North Sumatera in PT Kirana Megatara (2012-2016), Deputy Office Region North Sumatera in PT Adira Finance (2007-2012), Sales Division in Citibank (2006-2007), Head of Region South Jakarta in Bank Bumiputera (1997-2005) and Accounting Staff in Borsumej Wehry Indonesia (1996-1997).

Mission and Vision

MISSION: To Provide Sustainable Green Rubber Solutions that Prosper with the Nation.

VISION: To Be the Largest and Most Preferred Rubber Solution Provider (to Customers and Suppliers) in the World.