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Chairman – Henry Sy, Jr.

Mr. Sy has been holding top level positions in companies engaged in Banking, Real Estate Development, Construction, Mall Operation , Food and Rubber Manufacturing, Finance and Investment.

His leadership roles in these companies has contributed significantly to strengthening them toward becoming industry leaders.

Mr. Sy has a Bachelors Degree in Management, Finance and Commerce from De La Salle University.

President – Engr. Gilbert S. Cruz

Engr. Cruz has over 15 years of experience in Industrial Management in a number of companies. He has led teams of as many as 2,000 professionals.

He has successfully led business organizations in various stages of growth and challenges. He has solid grounding in implementation management in businesses situated in Zamboanga, Pampanga, Cavite and Metro Manila.

Engineer Cruz has Bachelor Degrees in Chemistry, industrial engineering, and mechanical engineering from Adamson University.

Vice President – Dr. Ishmael Ordoñez

Dr. Ordoñez has been connected in manufacturing companies here and abroad for the last 25 years.

He has held leadership and management positions in companies in various industries.

He has demonstrated competence in various facets of management. He has held teaching positions in educational institutions in the Philippines and other countries.

Dr. Ordoñez has a Bachelor’s in Science Degree in Chemistry from McGill University, Montreal, Canada and Doctorate Degree from Concordia University in Montreal, Canada.

Financial Comptroller – Michael Sison

Mr. Sison has been connected with various companies in the past 30 years. He has worked for companies in banking, broadcast, pre-need , manufacturing among others.

His specialization is Accounting and Finance Management. He is proficient in Financial Management with emphasis on bottom line responsibility.

Mr. Sison has a Masters Degree in Management. He also graduated at University of the Philippines Los Banos with Bachelor’s Degree in Agriculture (Animal Science).


Operations Executive

Operations (Plant Director) – Engr. Rainier E. Estrada

A registered Chemical Engineer, graduated Cum Laude at Cebu Institute of Technology on Bachelor’s Degree in Chemical Engineering.

Mr. Estrada is working for more than 20years in both local and international cement companies. His expertise includes planning and commissioning production of Cement grinding and process design.

Production– Engr. Emmanuel M. Flores

Is working for more than 20 years in different cement company locally and internationally. His expertise includes planning and production of Cement grinding and process design parameters of cement manufacturing.

He also graduated at University of Mindanao with a Bachelor’s Degree in Mechanical Engineering.

Maintenance – Engr. Mario C. Domilon

Has more than 16 years of experience in cement industry in engineering, erection, commissioning, manpower supervision, equipment maintenance and repair and technical documentation.

He graduated at Eastern Visayas State University and took up Bachelor of Science in Mechanical Engineering.

Quality Assurance – Engr. Florence N. Siador

Brings to Big Boss Cement Inc. her 13 years of relevant experience in the cement manufacturing industry. She is meticulous about meeting standards and customer expectations and is committed to improving business performance. She has honed her dexterity in quality assurance through her exposure in statistical reporting, product and process improvement, and research and development activities.

She graduated with a Bachelor’s Degree in Chemical Engineer at MAPUA Institute of Technology.

Human Resources – Ms. Girlie P. Maguddayao

Is a seasoned Human Resources practitioner. Her professional experience includes working in manufacturing industry and multinational companies. She is an accomplished individual who manage organizational growth & success.

She studied at Angeles University Foundation with a Bachelor’s Degree in Business Administration Major in Management and Entrepreneurship.

Accounting – Ms. Mae-Lyn A. Tuliao

Is a Certified Public Accountant with outstanding career experience both on private companies and government units. She devotes her profession in the development of the establishments’ accounting and finance aspect.

She took up a Bachelor’s Degree in Accountancy at Jose Rizal University.

Logistics – Mr. Joe Adrian S. Mangaliman

A registered Mechanical Engineer who has logistics experience in various local companies on different leadership roles.

He took up a Bachelor’s Degree in Mechanical Engineering at University of Santo Tomas.

Sales – Mr. Paul B. Katigbak

Paul Katigbak has accumulated 20 years of experience in the field of SALES AND DISTRIBUTION management both in local and multinational companies. Added feather on his hat are his Sales awards during his years of service.

Mr. Katigbak graduated from Colegio de San Juan de Letran with a Bachelor’s Degree in Commerce, Major in Management.

Marketing – Ms. Josephine De Leon

Ms. De Leon has more than 17 years of experience in marketing and business development. She has worked in several multi-national construction companies which specializes in sealants, adhesives and polymers.

Earned a Diploma Course in Supply Chain Management in De La Salle-College of St. Benilde and worked as procurement planner for more than 4 years. Gained MBA units in Rizal Technological University and Certificate Course in Integrated Marketing Communications in De La Salle.  Graduated with a Bachelor’s Degree in Industrial Engineering at Polytechnic University of the Philippines.

Corporate Address:

No. 28 Madison Street, Barangay Ilaya.
Mandaluyong City
Telephone: 632-7171609

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