Basic info

First Name


Last Name


User name






Full name

Nguyen Hoang Long

Working languages

English, French (Français), Vietnamese (Tiếng Việt)




DESS M2 Droits des affaires internationales (Tours University, France, 2007)

Bachelor of Arts in International Law (Institute for International Relations, Vietnam, 2003)

Significant achievements

As an Independent Advisor/Mentor from 2013 to date, I provided:

  • Advices on strategy and development of various start-up companies, mainly in the sectors of telecom businesses including MVNO, e-commerce, online games and education, etc;
  • Advices on offshore investment projects implemented by Vietnamese companies.

As founder of TreeOTek., JSC from 2020 to date, I participated in establishment & management of a greentech start-up dedicated to research & development of IoT products integrated with plants to purify air, water and recycle domestic waste, etc.

As co-founder of Fastsell Co., Ltd. from 2015 to 2016, I participated in establishment & management of one of the earliest e-commerce platform of Vietnam.

As Legal Affair Manager of Viettel Global Investment., JSC. from 2009 to 2013, I contributed to

  • Acquisition of telecom license and start-up of Viettel’s affiliates in Haiti, Mozambique, Timor-Leste and Cameroon;
  • Governance of Viettel’s affiliates in Laos, Cambodia, Haiti, Mozambique, Peru Timor-Leste and Cameroon;
  • Due diligence on investment opportunities in telecom sector in Cuba, Tanzania, Malawi, Burundi, Kenya; Dominican Republic, etc.

Titanium Award – ICIA StartupExchange 2024 – SEA region

Winner – Hoalac Startup Challenge 2022

Runner up – Techfest Vietnam 2021

Top 5 – Hack4Growth 2021



Looking for business partners

Current employment

Chief Executive Officer – TreeOTek., JSC


Green Technology, Research & Development, Offshore investment, International Law, Corporate Governance, etc

Motivation for social impact creation

My first job was with a EU funded rural development project deployed in the mountainous area of Vietnam where I witnessed why and how various groups of minorities should be supported.

Contributions to the SBC community

I co-founded TreeOTek with a mission to develop sustainable solution to the matters that human being has to deal with on a daily basis.

Sustainable Development Goals

GOAL 3: Good Health and Well-being, GOAL 7: Affordable and Clean Energy, GOAL 11: Sustainable Cities and Communities

SBC competition

Competition: look for projects

Active but not looking for new projects

Website and social media