Jonathan is a Managing Partner specializing in litigations, corporate, labor law, foreign investment, and mining.

Post-obtaining both his undergraduate and master’s law degree from University Indonesia, he has gained experience through practicing law in prominent firms in Jakarta such as Umar Husein & Partners, Tirta & Partners, Juan Felix Tampubolon & Partners. Additionally, he had also held executive position in PT Optima Nusantara Energi, a company operating in geothermal energy sector.

One of the major cases that drawn his focus into litigation was the murder case of President Director of PT Putra Rajawali Banjaran. Collaborating with a legal team led by Juan Felix Tampubolon, S.H. , M.H., he was trusted to assist the executor, Daniel Daen Sabon, Henrikus Kia Walen, and Heri Santosa during the trial at the District Court of Tangerang. Since then, his interest and focus to litigation cases are heightened, and every cases following has been formative to his expertise today.

Aside from practicing law, Jonathan also actively involve in organizations. He is trusted to be the administrator of the National Leadership Council (DPN) of the Indonesian Advocates Association (PERADI) Rumah Bersama Advokat as Secretary for Socio-Cultural and Family Harmony for Advocates for the 2020-2025 period.

JONATHAN TAMPUBOLON, S.H., M.H.

MANAGING PARTNER

Betty Sibarani is a partner at JTP, who specializes in corporate law, including general corporations, capital markets, labor law, mergers and acquisitions, and foreign investment. Her prior 10+ experience practicing law in Adnan Buyung Nasution & Partners and Lubis Ganie Surowidjojo, and Jonathan, Adam, & Partners Advocates & Counsellors at Law has deepened her knowledge and skills in multiple fields of law, especially corporate law.

Betty obtained her bachelor's degree in law from Parahyangan Catholic University and continued her education in Rijksuniversiteit Groningen, the Netherlands where she graduated with an LL.M.

BETTY, S.H., LL.M.

PARTNER

Victor Kamang hold a Senior Legal position at a leading telecommunications companies in Indonesia. He is involved in many areas of corporate law specifically telecommunication, litigation, and economic law. He graduated from Faculty of Law University of Indonesia and completed his master’s degree from Faculty of Law University of Indonesia in the field of Economics and Business Law.

VICTOR KAMANG P H, S.H., M.H.

OF COUNSEL

With 15 years of experience as a legal manager in companies engaged in the field of energy such as coal mining, oil & gas and geothermal, Erika is very proficient in preparing and negotiating farm-in and farm-out agreement, joint operating agreement, oil and gas purchase agreement, and oil and gas acquisition. She graduated from Faculty of Law of Parahyangan Catholic University in 2008.

ERIKA, S.H.

OF COUNSEL

Natanael joined the Law Firm in 2018, after graduating from the Faculty of Law, Parahyangan Catholic University (Unpar) in 2016. During his studies, he was awarded numerous accolades for his academic achievements (“Unpar’s Outstanding Student”, UNPAR Awards Night 2016) as well as his participation in external competition such as Prof. Soedarto IV and V Cup for Corruption Criminal Moot Court Competition (Best Legal Advisor, Best Witness/Expert, and Best Public Prosecutor in 2015).

After receiving his advocate title in 2019, he has obtained broad knowledge and experience in the field of litigation, and gained expertise in corruption, dispute settlement in court and outside the court, corporate law, employment law and industrial relations dispute, land law, inheritance law, and personal law.

NATANAEL EDWIN SAHALA, S.H.

SENIOR ASSOCIATE

Ray started his career in the Law Firm after graduating from the Faculty of Law, Parahyangan Catholic University (Unpar) in 2018. Over the years, Ray has gained diverse range of legal knowledge and experience in civil law, corporate law, family law, agrarian law, inheritance law, and commercial law. Post-receiving his advocate title in 2020, Ray has gain specialization in drafting concepts and executing technical litigation strategies to achieve specific objectives.

RAY ANDREW MANUELA, S.H.

SENIOR ASSOCIATE

Upon graduating from Jayabaya University in 2018, where he actively participated in moot court competitions and partake in student organizations, Andreas has been part of the Law firm since 2018, and obtained his advocate licence in 2021. Through the years, Andreas has deepen his legal knowledge and experience specifically in the fields of corporate law, employment law in industrial court, agragrian law, inheritance law, as well as criminal and civil litigation in court.

ANDREAS SANDRO WELLY T, S.H.

MID ASSOCIATE

Martin became a part of JTP Law Firm shortly upon receiving his advocate title in 2023. He obtained his bachelor’s degree in law from Parahyangan Catholic University in 2018, where he was actively involved in various organizations and was appointed as the Chief Executive of the 2017 Village Development event, aimed to educate Indonesians residing in remote areas regarding law-related matters relevant to the community. His experience and exposure in handling numerous large domestic and overseas clients have enable him to comprehensively advise clients in various industrial business sectors, such as manufacturing, aviation, shipping, export-import, fashion, and other industrial sectors.

MARTIN PARLINGGOMAN, S.H.

MID ASSOCIATE

Joudi received a Bachelor of Laws degree from the Faculty of Law, Brawijaya University in 2022. During his studies, he was active in student organizations such as ALSA LC UB (Asian Law Students' Association Local Chapter Universitas Brawijaya) and BEM FH UB (Student Executive Board of the Faculty of Law Universitas Brawijaya). In 2017, Joudi was delegate at the National Moot Court Competition (NMCC) Piala A.G. Pringgodigdo VI held by Faculty of Law, Airlangga University. Joudi has taken special education for advocate profession and received his advocate title in 2024. In the same year, Joudi joined JTP Law Firm Advocates and Counsellors at Law. Joudi has legal knowledge and experience in the fields of business law, agrarian law, inheritance law, industrial relations dispute, commercial court, as well as litigation both civil and criminal in court and outside the court.


JOUDI NATAMA HANSIGA, S.H.

ASSOCIATE

PARALEGAL & INTERN

Besides experienced lawyers and a team of specialized advisors, JTP Law Firm is also supported by paralegals, law students, and/or graduates in internship roles. They assist in necessary research, legal studies, data tracking, and information collection for JTP Law Firm case handling.