Key Management Team

LUKE SEBASTIAN

Chief Executive Officer
Malaysian, Male, Aged 47

Luke Sebastian joined OpenSys in 2000 and brings over 25 years of extensive experience in the technology industry, spanning business leadership, product innovation, and technical expertise. Prior to his current role, he served as Chief Executive Officer of OpenSys Technologies, where he led strategic planning and business development, strengthened the company’s growth foundation, and oversaw market and technology research, product development, marketing, and sales. Additionally, he led the nationwide Customer Support division, ensuring seamless operations and exceptional service delivery across the company’s portfolio.

Luke has a proven track record of aligning business strategies with client needs and competitive market trends. His leadership has resulted in the successful rollout of transformative initiatives, while fostering strong client relationships at every stage of the project lifecycle. By spearheading research and development efforts, he has consistently driven the creation of new business opportunities and established crossindustry collaborations that enhance the company’s market position.

Luke holds a Bachelor of Science (Honours) in Computing from Staffordshire University, and the Credential of Readiness (CORe) and Certificate of Specialization in Entrepreneurship and Innovation from Harvard Business School Online.

WONG SIEW POOI

Co-Chief Executive Officer - OpenSys Technologies
Malaysian, Female, Aged 51

Wong Siew Pooi was appointed as co-Chief Executive Officer of OpenSys Technologies Sdn Bhd on 1 March 2025. She holds a Bachelor of Computer Science Degree (Honours) from Universiti Sains Malaysia.

She joined OpenSys (M) Berhad in 1999 and has held senior positions including Senior Vice President of Software Development and Integration division and Cheque Processing Outsourcing division.

Wong served as the Chief Operating Officer of OpenSys (M) Berhad from 2023 to 2025, playing a critical role in business operations, strategy execution, and corporate growth. She had led crossfunctional teams, implemented technology-driven solutions, and managed large-scale projects. She is a widely respected executive with more than 26 years of project management and software experience as well as deep relationships across OpenSys’ ecosystem.

As co-Chief Executive Officer, Wong is responsible for business development and strategic planning to foster innovation and strengthen the company as a leader in the technology sector.

DENIS KOAY KAR HWA

Group Chief Commercial Officer / Co-Chief Executive Officer - OpenSys Technologies
Malaysian, Male, Aged 46

Denis Koay has close to 25 years of experience in the information technology industry, with extensive exposure to digital transformation and enterprise technology solutions. He brings a strong combination of technical knowledge and commercial leadership experience across multiple industry sectors.

He was appointed Group Chief Commercial Officer of OpenSys (M) Berhad and OpenSys Technologies Sdn. Bhd. on 1 January 2025, where he is responsible for overseeing and aligning the commercial strategy and business development functions across both entities. On 1 March 2025, he concurrently assumed the role of Co-Chief Executive Officer of OpenSys Technologies Sdn. Bhd., providing leadership in the Group’s innovation and emerging technology initiatives.

His leadership focuses on strengthening commercial capabilities, driving disciplined execution, and supporting sustainable business growth in a dynamic regulatory and digital environment.

Denis holds a Bachelor of Science in Computing from the University of Portsmouth, United Kingdom. He has previously been involved in the delivery of enterprise solutions across the manufacturing, insurance, and financial services sectors.

WINNIE ONG POH HONG

Group Chief Financial Officer
Malaysian, Female, Aged 49

Winnie Ong Poh Hong was appointed as Executive Director of OpenSys on 1 January 2022. She joined OpenSys in 2000 and has since served in various roles, ultimately advancing to her current position as Group Chief Financial Officer, effective 1 January 2025.

With over 24 years of experience in finance, accounting, financial reporting, analysis, taxation and treasury management, she has played a key role in shaping the Company’s financial strategy. Her leadership extends to overseeing treasury management, internal controls, corporate affairs and budgeting, ensuring the financial stability and growth of the organisation.

In addition to her financial expertise, she is responsible for directing the Human Resources, Legal and Compliance functions, ensuring their alignment with organisational goals and adherence to regulatory requirements.

She holds a Professional Qualification in Accounting from The Association of International Accountants, United Kingdom, and is a Fellow of the Institute of Public Accountants (IPA), Australia.

KOH LEA CHEONG

Group Chief Innovation Officer
Malaysian, Male, Aged 59

Koh Lea Cheong is the Group Chief Innovation Officer. He assumed his current position on 1 January 2025.

He started his career with OpenSys in January 1996 and has since served in various positions throughout his 30 years of service. Prior to joining OpenSys, he was the Systems Engineer in NCR (Malaysia) Sdn Bhd and AT&T Global Information Solutions (Malaysia) Sdn Bhd from 1992 to 1995.

He has over 33 years of experience in software design and development, operational management and planning particularly in the retail banking and payments industry. He works closely with other senior officers to develop and implement plans and solutions that enhance operational efficiency and drive growth.

He holds a Bachelor of Applied Science degree with Honours.

CHEE HONG SOON

Group Chief Sustainability Officer
Malaysian, Male, Aged 66

Chee Hong Soon is a co-founder and Group Chief Sustainability Officer of OpenSys. He primarily oversees the environmental, social, governance and sustainability activities of the Company. He obtained his Bachelor of Science degree in Physics from Universiti Malaya in 1983. He has more than 24 years’ experience in transaction switching systems implementation, software application, database design, system migration and disaster recovery. Prior to cofounding OpenSys, he worked as a regional Enterprise Systems Consultant in AT&T Global Information Solutions (Malaysia) Sdn Bhd from 1990 to 1995 and Senior Systems Engineer in NCR (Malaysia) Sdn Bhd from 1983 to 1989.

TUNE HEE HIAN

Group Chief Marketing Officer
Malaysian, Male, Aged 67

Tune Hee Hian was appointed as Alternate Director to Tan Kee Chung on 1 March 2025. He has been serving as the Group Chief Marketing Officer of OpenSys (M) Berhad since January 2022. In addition to his leadership in marketing, he has a strong background in business and product development, project management, and technologies. His extensive experience spans over three decades in various senior management and technical roles with well-rounded perspectives of both the technical and business aspects of the Company.

Prior to joining OpenSys in 1996 as a founding member, he worked as a Group Manager for Financial Systems in AT&T Global Information Solutions (Malaysia) Sdn Bhd and as a Technical Consultant in NCR (Malaysia) Sdn Bhd.

Tune Hee Hian holds a Bachelor of Science degree in Education and a Postgraduate Diploma in Computer Science from Universiti Malaya (1984). He also holds a Master’s Certificate in Project Management from George Washington University, Washington DC, USA (1995).

HENG KEN WEI

Senior Vice President - Centre of Technology
Malaysian, Male, Aged 50

Heng Ken Wei holds a Bachelor of Information Technology Degree. He has over 25 years of working experience in software application design, development and support. He was promoted to his current position on 1 January 2019.

SHIYAMALA JOEGANATHAN

Senior Vice President - Innovation, Digitalization & Transformation

Malaysian, Female, Aged 49

Shiyamala Joeganathan holds a Bachelor of Computer Science (Honours) Degree. She has over 25 years of working experience in application software design, development and support. She was promoted to her current position on 1 January 2023.

HON TIAN YANG

Senior Vice President - Intelligent Systems Engineering - OpenSys Technologies
Malaysian, Male, Aged 49

Hon Tian Yang holds a Bachelor of Computer Science Degree. He has over 24 years of working experience in system, network and data centre management. He was promoted to his current position on 1 March 2024.

LOOY WAN KENG

Senior Vice President - Customer Support - OpenSys Technologies
Malaysian, Male, Aged 44

Looy Wan Keng holds a Diploma of Information Technology in Business Information Systems. He has over 22 years of experience in field services management, hardware engineering and solutions support. He was promoted to his current position on 1 January 2024.

OOI HOCK ANG

Senior Vice President - Hardware Development & Integration
Malaysian, Male, Aged 55

Ooi Hock Ang holds a Bachelor of Computer Science (Honours) Degree. He has over 29 years of working experience in software development and support and project management. He was appointed to his current position on 1 January 2019.

LEONG YOKE WAI

Senior Vice President – Research and Development
Malaysian, Male, Aged 67

Leong Yoke Wai holds a Bachelor of Computer Science Degree. He has over 41 years of working experience in self-service device software design, development and support and network configuration and support. He was appointed to his current position on 1 January 2019.

THAM KOK CHENG

Senior Vice President - Customer Data & Information Management
Malaysian, Male, Aged 73

Tham Kok Cheng holds a Master’s Certificate in Commercial Project Management. He has 48 years of working experience in many areas of Information Technology including application software design, development and support and project management. He was appointed to his current position on 6 September 2021.

CHONG BOON NI

Senior Vice President - Cheque Processing Outsourcing
Malaysian, Female, Aged 50

Chong Boon Ni holds a Bachelor of Information Technology Degree. She has over 26 years of working experience in application software design, development, support, project management and operational management. She is responsible for overseeing the day-to-day operations and functions of Cheque Processing Outsourcing. She was promoted to her current position on 1 January 2025.