Ari Tjahanto

Ari Tjahanto

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Executive Summary

Former Information and Policy Director
Fiber Star
Sustainability & ESG Expert

Professional Experience

CEO – Wongke Solution

(2024 – Present)
Memimpin praktik konsultasi di bidang Human Capital, IT Systems, dan Sustainability melalui pendekatan Academy, Business Consultancy, dan Core System Advisory. Fokus pada transformasi organisasi berbasis nilai dan keberlanjutan.


Information & Policy Director (Human Capital, IT, Customer Care) – FiberStar

(2015 – 2022)
Memimpin strategi Human Capital dan transformasi organisasi di perusahaan infrastruktur telekomunikasi nasional. Bertanggung jawab atas HRIS, strategic workforce planning, ISO standards, dan penguatan budaya organisasi.


Leadership Roles – XL Axiata Tbk

(2008 – 2015)
Menjabat dalam berbagai posisi strategis termasuk GM Audit Management & Service Partner Management, Head of Service Quality, dan Head of Data Services. Berperan dalam peningkatan kualitas layanan, pengembangan mobile data services, dan penguatan manajemen kinerja.


Business Development & Legal Manager – CBN (Cyberindo Aditama)

(2000 – 2008)
Berperan dalam pengembangan bisnis, legal strategy, dan ekspansi layanan internet nasional pada fase awal pertumbuhan industri ISP di Indonesia.

Board & Advisory Roles

  • Board of Expert – NBO Indonesia

  • Advisory Jury – Economic Review

  • Assessor Human Resource – LSP MSDM

  • Commissioner – PT Anugrah Nutrisi Nusantara

  • Associate Consultant – Prasetiya Mulya Executive Learning Institute


Author & Educator

  • Penulis buku Sustainability Leadership (IPB Press)

  • Course Instructor ESG & Sustainability

  • Trainer Organization Development & Green HR

  • Speaker CSR–ESG–SDG Conference

Education Background

University of Cambridge
Sustainable Development (SDG, Law, Biodiversity, Trade Rule, Wealth Economy)

Universitas Udayana
Master’s Degree – Sustainability in Finance & Development

Imperial College London
BSc Mathematics with Mathematical Computation

Indonesia Defense University (UNHAN)
Executive Strategic Leadership & Management Course

Core Expertise & Skills

  • Human Capital Strategy

  • Sustainability & ESG Implementation

  • Sustainable Leadership Development

  • Organizational Transformation

  • Green & Sustainable HRM

  • People Analytics

  • Corporate Governance & Ethics

  • Sustainable Finance & Development

  • Culture & Change Leadership

  • ESG Communication & Advocacy

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