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About: About

For the past decade, Ray has been dedicated to providing tailored HR consultancy services to Singapore SMEs. With profound insights into the local business landscape, Ray offers expert guidance on HR management, covering learning and development, compensation & benefits, talent acquisition, and organizational development.

Beyond HR consultancy, Ray extends his expertise to facilitate opportunities for Singapore SMEs venturing into the Thai market. Leveraging his extensive network and understanding of the Thai business environment, Ray advises on entity setup, corporate tax planning, and property acquisition. He also fosters connections with potential partners and distributors through strategic business matching events, enabling Singapore SMEs to establish a strong foothold in Thailand.

Additionally, Ray specializes in project management for branding and marketing initiatives, alongside offering AI-powered integrated software solutions, including ERP systems and advanced POS platforms.

Examples of his works include:

  • Conceptualizing a corporate leadership curriculum for a leading Singapore training organization, resulting in substantial revenue growth.

  • Leading corporate transformation initiatives for an executive search firm in Singapore, enabling its transition into a regional powerhouse across Southeast Asia.

  • Driving corporate transformation for a Data Center Migration company in Singapore, facilitating successful expansion into the Thai market and significant revenue gains from large-scale projects.

  • Implementing job redesign and career development pathways projects for various Singapore organizations, resulting in improved operational efficiency and decreased employee turnover.

Ray is a certified consultant accredited under Enterprise Singapore & Singapore Accreditation Council.
Ray actively serves as an independent consultant in SFIC Institute.

Ongoing & Past Experience
SFIC Institute
Independent Consultant

Hi-So Exclusive Tours Singapore & Thailand
Founder, Business Matching & Private Events

Jok Mama Concepts
Founder, F&B Thai Cusine Dining

Kaplan Singapore, Adult Learning
Senior Manager, Management Consulting

With 16 years of distinguished accounting experience, Ketwalee Matar (Lee) has honed her expertise while serving prestigious organizations such as Facebook, KFC, and McDonald's in Thailand. Her journey of excellence led to her current role as Chief Operating Officer at DDES, where she orchestrates growth strategies, oversees operations, and ensures top-tier service delivery to clients.

Specializing in setting up foreign entities in Thailand, Lee excels in navigating the intricacies of international business expansion. Her proficiency extends to regulatory filings and streamlined establishment processes, facilitating smooth entries into the Thai market for businesses from around the globe.

Lee's strategic acumen and operational finesse drive organizational success at DDES. Her leadership is marked by a relentless pursuit of client satisfaction and operational efficiency.

As COO, Lee is dedicated to leveraging her expertise to propel DDES to new heights, delivering unparalleled value to clients while facilitating seamless entry into the Thai market for foreign entities.

Rajamangala University of Technology Phra Nakhon
Bachelor's degree, Accounting and Finance

About Apstellar

Established in 2015, Apstellar is a Singapore based firm with a regional footprint extending to Shanghai, China, and Bangkok, Thailand. Our consultancy services span various domains, including Branding & Marketing, Human Resources, Overseas Expansion (particularly focused on Thailand market), along with AI driven Integrated Software Development in Singapore.

The name "Apstellar" is a portmanteau word of "Aptitude" and "Stellar", reflecting our belief that every entity, be it an organization or an individual, deserves a platform to demonstrate and excel in their strengths.

At Apstellar, we are committed to leveraging our expertise and platforms to propel our clients toward business success and sustainable investment growth. Rooted in our core values of Quality, Long-Term Partnership, and Efficiency, we are dedicated to fostering lasting relationships and delivering optimal solutions for our clients' needs.

Singapore Team

Meet the Team

MRA Grant Consultant.jpg

Ray Oh
Founder, Director of Consultancy


Branding & Marketing

Human Resource

AI driven Integrated Software

Strategic Project Management

Overseas Business Expansion - Thailand

Working Language:

English, Mandarin & Thai

Meet the Advisors

Katwalee Matar.jpg

Katwalee Matar (Lee)

Corporate Governance Advisor - Thailand Market


Corporate Financial Governance
Accounting and Financial Reporting Services
Entity Establishment and Regulatory Filings
Payroll Management and Taxation Adherence
VAT Compliance and Fiscal Advisory Services

Working Language: Thai & English

Thailand Team
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