what we give
Our Team
Home ◈ Our Team
meet our team
Our team consists of experienced professionals with expertise in financial advisory, accounting, taxation, and renewable energy sectors. With a strong understanding of financial management and sustainable energy development, we provide strategic insights and reliable solutions to support investment, project development, and long-term business growth in the evolving energy and financial landscape.
sampe
Sampe Hermanto Simamora, S.E.Ak., S.H.
COO
Completed various professional training programs in finance, corporate governance, and industry analysis, including Domestic Sea Transportation Industry (JFC Plus), Corporate Finance (Kovida), Hospitality Sector Analysis (BNI), Palm Oil Plantation Industry (LPP Agro Nusantara), Credit Quality Improvement for Middle Segment (BNI), Oil & Gas Industry Training, Good Corporate Governance Training, Corporate & Commercial Credit Analysis Training at PT Bank Negara Indonesia (Persero) Tbk, and Design Thinking Training by IBM.
  • PT. HILDA SERENI RAJA (2022 – Present) Director
  • SS Tax Consultant ( 2005 s/d 2022 )
  • PT. AGUNG PUTRI MAHKOTA, (2023 - Present) Internal Auditor
  • PT. MYINDO CYBER MEDIA, (2023 - Present) Share Holder & Finance Director
  • PT. RAJAWALI IDEALS Indonesia (RADESIA) , (2022 - Present) Share Holder & Finance Director
  • PT. MEDIACITRA MAJU INDONESIA, (2018 - 2022) Chief Excecutive Officer
  • PT. SIMBROS LOGISTIC UTAMA, (2016 - 2022), Manager Finance, Accounting & Tax
  • PT. SAETI CENTRICON WAHANA, (2011 - 2022), ka. Bag
  • Akuntansi dan Pajak -Jabatan terakhir sebagai Komisaris
  • Ijazah Nasional Pendidikan Bahasa Inggris , Dirjen
  • Diklusepora
  • Training Form B Project
  • Reporting, PT. Jaya Konstruksi MP
  • Tax Brevet A, B Dan C LPM Trisakti
  • Training Extra Ability to be an Excellent leadrer by Telos
  • Presentation, Public Speaking and Report Writing skill by ABC
  • Training Leader Create Leader by ABC
mangatur
Mangatur Nainggolan, S.E., S.H., M.M., M.H., CPA
founder
A multidisciplinary professional with extensive experience in legal and financial advisory services, particularly in corporate and banking law, contract drafting, licensing, agrarian law, criminal and administrative cases, inheritance, consumer protection, and employment law. Possesses strong expertise in corporate governance, regulatory compliance, dispute resolution, and strategic business advisory. Has completed various professional training programs in corporate finance, credit analysis, industry sector analysis, and good corporate governance conducted by institutions including PT Bank Negara Indonesia (Persero) Tbk, IBM, Kovida, JFC Plus, and LPP Agro Nusantara. Actively involved in professional organizations such as PERADI, IKAPI, IAPI, ISEI, and IKHAPI, and holds strategic roles including Founder and Secretary of the Sweden Chamber of Commerce Indonesia, Founder of the Indonesia China Economic Cooperation Center, Chairman of Forum Diskusi Nasional (FDN) PPK Kosgoro 1957, Special Staff for Legal Affairs to the Vice Chairman of Commission I DPR RI (2024–2025), and Head of the Legal and Asset Division of the Indonesian Red Cross (2024–2029). Holds several professional certifications including Certified Tax Lawyer, Certified Curator, Certified Legal Auditor (CLA), Certified Procurement Lawyer (CPL), Certified Public Accountant (CPA), and Certified Customs and Excise License.
  • Persatuan Advokat Indonesia (PERADI)
  • Ikatan Kurator dan Pengurus Indonesia (IKAPI)
  • Ikatan Akuntan Publik Indonesia (IAPI)
  • Ikatan Sarjana Ekonomi Indonesia (ISEI)
  • Founder and Secretary of the Sweden Chamber of
  • Commerce Indonesia
  • Ikatan Kuasa Hukum dan Advokat Pajak Indonesia (IKHAPI)
  • Bidang Hukum dan HAM MPN Pemuda Pancasila
  • Ketua Forum Diskusi Nasional (FDN) PPK KOSGORO 1957
  • Staf Khusus Bidang Hukum Wakil Ketua Komisi I DPR RI
  • 2024-2025
  • Ketua Bidang Hukum dan Aset Palang Merah Indonesia
  • periode 2024-2029
  • Founder of Indonesia China Economic Cooperation Center
  • Certified Tax Lawyer
  • Certified Curator
  • Certified Legal Auditor (CLA)
  • Certified Procurement Lawyer (CPL)
  • Certified Public Accountant (CPA)
  • Certified Customs and Excise License
dessy
Dessy Christine Tambunan., S.E., S.H., CPA.
CEO
Completed various professional training programs in finance, corporate governance, and industry analysis, including Domestic Sea Transportation Industry (JFC Plus), Corporate Finance (Kovida), Hospitality Sector Analysis (BNI), Palm Oil Plantation Industry (LPP Agro Nusantara), Credit Quality Improvement for Middle Segment (BNI), Oil & Gas Industry Training, Good Corporate Governance Training, Corporate & Commercial Credit Analysis Training at PT Bank Negara Indonesia (Persero) Tbk, and Design Thinking Training by IBM.
  • Industri Angkutan Laut Domestik, JFC Plus, 2021
  • Corporate Finance, Kovida, 2020
  • Industri Analisis Sektor Perhotelan, BNI, 2020
  • Industri Perkebunan Kelapa Sawit, LPP Agro Nusantara, 2020
  • Perbaikan Kualitas Kredit Segmen Menengah, BNI, 2019
  • Oil & Gas Industries, 2019
  • Pelatihan Good Corporate Governance, 2019
  • Corporate & Commercial Credit Analysis Training, PT Bank Negara Indonesia (Persero) Tbk, Jakarta, 2018
  • Design Thinkning, IBM, Jakarta, 2017
  • Pendidikan Khusus Profesi
  • Advokat (PKPA), PERADI, 2021
  • Sertifikasi Pajak Brevet C, Ikatan Kuasa Hukum & Advokat Pajak
  • Indonesia (IKHAPI), 2019
  • Sertifikasi Pendidikan Dasar Penilaian 1, MAPPI, 2018
  • Certified Public Accountant, Ikatan Akuntan Publik Indonesia (IAPI), 2018
  • Sertifikasi Manajemen Risiko Level 1, 2012
david
Dr. David Jewell, DBA, BSc (Hons), MCMI
Senior Strategic Advisor
  • Public Investment Fund (KSA) (2024 – 2025)
    Director of Manufacturing & Technology Partnerships
  • ENOWA (PIF Co.) (2023)
    Electrolyser Manufacturing Manager
  • CERES Power Ltd (2021 – 2023)
    Advanced Manufacturing Manager
  • Alexander Dennis Ltd (2019 – 2021)
    Head of Manufacturing Operations
  • National Composites Centre (UK) (2015 – 2019)
    High-Volume Manufacturing Operations Leader
  • Gordon Murray Design Ltd (2013 – 2015)
    Senior Composites Engineer
  • McLaren F1 Racing / McLaren Cars (1992 – 2010)
    Aero Model Test Team Leader & Senior Engineering Roles
  • Doctorate in Business Administration (DBA)
  • BSc (Hons) Computer Aided Mechanical Engineering
  • Chartered Manager (CMI – Level 5)
  • Chartered Coach (ILM – Level 7)
  • Lean Six Sigma Green Belt
  • Managing Safely Certificate – British Safety Council
Our Professional Partners
faisal
Faisal Y, S.E.Ak., CA
Profesional Partner
tarsisius
Tarsisius Tukijan, S.Pd., S.H.
Profesional Partner
hari
Hari Johanes Nainggolan, S.Ak.
Profesional Partner
Our Team HISERA
andreas
Andreas Mangara Tua, S.Ak.
Tax & Accounting Associate
artha
Artha Lumbanraja, S.Tr.Pa.
Account Analysis & Accounting Reconciliation
wulan
Wulan Dwita, S.H.
Tax & Accounting Associate
pantas
Pantas Christoporus Gultom, S. Ak.
Accountant
david

01

Dr. David Jewell, DBA, BSc (Hons), MCMI
Senior Strategic Advisor
Dr. David Jewell is a highly accomplished senior technical leader with extensive experience in strategic planning, techno-economics, advanced manufacturing, innovation, and research & development. With decades of hands-on engineering experience spanning the shop floor to executive boardrooms, he combines deep technical expertise with strong commercial acumen to transform complex engineering operations into scalable, high-performance businesses. His career spans highly regulated and technologically demanding industries including Formula One, renewable energy, medical devices, and advanced automotive manufacturing.
mangatur

02

Mangatur Nainggolan, S.E., S.H., M.M., M.H., CPA
founder
A multidisciplinary professional with extensive experience in legal and financial advisory services, particularly in corporate and banking law, contract drafting, licensing, agrarian law, criminal and administrative cases, inheritance, consumer protection, and employment law. Possesses strong expertise in corporate governance, regulatory compliance, dispute resolution, and strategic business advisory. Has completed various professional training programs in corporate finance, credit analysis, industry sector analysis, and good corporate governance conducted by institutions including PT Bank Negara Indonesia (Persero) Tbk, IBM, Kovida, JFC Plus, and LPP Agro Nusantara. Actively involved in professional organizations such as PERADI, IKAPI, IAPI, ISEI, and IKHAPI, and holds strategic roles including Founder and Secretary of the Sweden Chamber of Commerce Indonesia, Founder of the Indonesia China Economic Cooperation Center, Chairman of Forum Diskusi Nasional (FDN) PPK Kosgoro 1957, Special Staff for Legal Affairs to the Vice Chairman of Commission I DPR RI (2024–2025), and Head of the Legal and Asset Division of the Indonesian Red Cross (2024–2029). Holds several professional certifications including Certified Tax Lawyer, Certified Curator, Certified Legal Auditor (CLA), Certified Procurement Lawyer (CPL), Certified Public Accountant (CPA), and Certified Customs and Excise License.
dessy

03

Dessy Christine Tambunan., S.E., S.H., CPA.
CEO
Completed various professional training programs in finance, corporate governance, and industry analysis, including Domestic Sea Transportation Industry (JFC Plus), Corporate Finance (Kovida), Hospitality Sector Analysis (BNI), Palm Oil Plantation Industry (LPP Agro Nusantara), Credit Quality Improvement for Middle Segment (BNI), Oil & Gas Industry Training, Good Corporate Governance Training, Corporate & Commercial Credit Analysis Training at PT Bank Negara Indonesia (Persero) Tbk, and Design Thinking Training by IBM.
sampe

04

Sampe Hermanto Simamora, S.E.Ak., S.H.
COO
Completed various professional training programs in finance, corporate governance, and industry analysis, including Domestic Sea Transportation Industry (JFC Plus), Corporate Finance (Kovida), Hospitality Sector Analysis (BNI), Palm Oil Plantation Industry (LPP Agro Nusantara), Credit Quality Improvement for Middle Segment (BNI), Oil & Gas Industry Training, Good Corporate Governance Training, Corporate & Commercial Credit Analysis Training at PT Bank Negara Indonesia (Persero) Tbk, and Design Thinking Training by IBM.
faisal
Faisal Y, S.E.Ak., CA
Profesional Partner
tarsisius
Tarsisius Tukijan, S.Pd., S.H.
Profesional Partner
hari
Hari Johanes Nainggolan, S.Ak.
Profesional Partner
andreas
Andreas Mangara Tua, S.Ak.
Tax & Accounting Associate
artha
Artha Lumbanraja, S.Tr.Pa.
Account Analysis & Accounting Reconciliation
wulan
Wulan Dwita, S.H.
Tax & Accounting Associate
pantas
Pantas Christoporus Gultom, S. Ak.
Accountant
andreas
Andreas Mangara Tua, S.Ak.
Tax & Accounting Associate