Nathaniel Oloan Leofitra Mangunsong. Source: https://www.legal500.com/gc-powerlist/southeast-asia-2017/nathaniel-mangunsong/
University of Indonesia. Photo: Ilham Kuniawan Gumilang, CC BY-SA 4.0, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:No_18_Rektorat_Universitas_Indonesia.jpg)
New York University School of Law. Photo: NYU School of Law, Attribution, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Nyu_law_vanderbilt.jpg)
Harvard Law School. Photo: CC BY-SA 3.0, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Hls_langdell_hall.jpeg)
University of Indonesia. Photo: Ilham Kuniawan Gumilang, CC BY-SA 4.0, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:No_18_Rektorat_Universitas_Indonesia.jpg)
New York University School of Law. Photo: NYU School of Law, Attribution, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Nyu_law_vanderbilt.jpg)
Harvard Law School. Photo: CC BY-SA 3.0, via Wikimedia Commons (https://commons.wikimedia.org/wiki/File:Hls_langdell_hall.jpeg)
Nathaniel Oloan Leofitra Mangunsong was born in Jakarta, Indonesia, on November 10, 1981. His parents are identified as Jati and Frieda. He has built his professional life in Indonesia's corporate legal and technology sectors, combining private-practice experience with senior in-house legal and management roles at rapidly expanding Indonesian technology companies.
Mangunsong studied Business Law at the Faculty of Law of Universitas Indonesia, earning a Bachelor of Laws in 2004. He received a Master of Laws in Corporate Law from New York University School of Law in 2008. In 2017 he completed executive education in leadership in corporate counsel at Harvard Law School, and in 2022 he was a visiting researcher at the National University of Singapore's Faculty of Law. He completed a doctoral degree in Business Law at Universitas Indonesia in 2025; his research focused on multiple-voting shares and founder control in Indonesian startup companies.
Mangunsong began his legal career in 2004 as an associate at Hadiputranto, Hadinoto & Partners, the Indonesian member firm of Baker McKenzie, in Jakarta, where he worked on corporate matters. From 2009 to 2010 he served as Legal Manager for Carrefour's Indonesian operations, including PT Carrefour Indonesia and PT Alfa Retailindo Tbk. He then joined Ginting & Reksodiputro in association with Allen & Overy, working as an associate in Jakarta from 2010 to 2012, with a secondment to Allen & Overy's Singapore office from 2012 to 2013, and as a senior associate in Jakarta from 2013 to 2016. From April 2016 through August 2019 he was Group General Counsel of Gojek, where he helped develop the company's legal and compliance function and supported fundraising, acquisitions, payments and fintech expansion, corporate governance, and regional growth. He served as General Counsel of Ruangguru from September 2019 to August 2020. In September 2020 he became Managing Partner of Adrem Law Firm, advising startups, investors, and other businesses on corporate and commercial matters. Following the merger of Adrem Law and PSHP Law, he became a partner of PSHP Adrem Law and head of its Corporate and M&A practice. His work includes fundraising, venture capital and private equity investments, mergers and acquisitions, joint ventures, foreign investment, fintech, competition, and startup growth. He has also served as an adjunct lecturer at Universitas Prasetiya Mulya.
Built and led legal and compliance functions supporting Gojek's fundraising, acquisitions, payments and fintech expansion, corporate governance, and regional growth in Southeast Asia.
Led legal work supporting Ruangguru's corporate growth, fundraising, mergers and acquisitions, and regional expansion.
Completed a doctoral degree in Business Law at Universitas Indonesia in 2025, researching multiple-voting shares and founder control in Indonesian startup companies.
(Bachelor's thesis by Nathaniel Oloan Leofitra at the Facu...)
2004Mangunsong has emphasized practical, forward-looking legal solutions that support business growth while maintaining regulatory compliance, governance, and risk management.
Mangunsong is a member of the Indonesian Advocates Association (PERADI), the Indonesian Financial Sector Legal Consultants Association, and the Indonesian Competition Lawyers Association. He has also served as a board member of professional associations representing financial-sector legal consultants and competition lawyers.
Mangunsong has described the importance of concise communication, practical regulatory problem-solving, and close cooperation between legal and business teams. Professional profiles characterize his approach as commercially focused and oriented toward supporting business growth.
Quotes from others about the person
He has been described by Chambers Asia-Pacific as highly regarded in Indonesia's startup and venture-capital community, with in-depth expertise in representing startups in fundraising and M&A transactions.
Mangunsong's documented family connections include his mother, Frieda, and his father, Jati. His professional connections include senior legal and management roles at Gojek, Ruangguru, Adrem Law Firm, and PSHP Adrem Law, as well as earlier affiliations with Baker McKenzie and Allen & Overy.
