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ORR Photo


Chief Executive Officer

Mr. Ruivivar is a licensed Architect with over 35 years of experience in the field of architectural designs, project management, and construction implementation. A successful track record working on a range of projects in such diverse roles as a planner, programmer, and project manager. Mr. Ruivivar performs a key role in project planning, budgeting, and the identification of resources needed. Mr. Ruivivar enjoys direct client interface, working in a team environment, collaborating with the design team, and coordinating with all the concerned parties involved in the project to develop solutions that optimize operational flows, staff efficiencies, and achieve business objectives. Mr. Ruivivar has a unique interest in infrastructures and applications of new technologies bringing about optimum utilization of resources, labor, materials, and equipment ensuring their procurement at the most cost-effective terms. Mr. Ruivivar co-founded the office of Oscar R. Ruivivar An Associates after 15 years of work experience with the firm of Jorge Y. Ramos And Associates. A reputable architectural design office. In this office, He worked on major landmark projects that gave him solid experience and achieved the necessary expertise. Mr. Ruivivar attended various seminars, lectures, and advanced studies, extensively traveling and visiting countries that became part of his foundation and link for global and international professional practices, and made some collaboration work with other reputable firms both local and international.


Cortes photo


Director of Engineering Division

Mr. Cortes is a licensed Civil and Structural Engineer with over 32 years of experience. Applying his knowledge on undertaking technical feasibility and studies, Enrique is responsible for the construction aspects of the project,  monitoring and supervising the construction of the contracted works with particular attention, ensuring that requirements for the quality and timely progress of works. In accordance with the generally accepted construction supervision.


Mr. Cortes's responsibilities also include consulting services, Structural Design and Project Development, Project and Construction Management, and Construction Implementation. Enrique also conducts value engineering and research for alternative materials and methods for the project.


MAA photo


Director of Project Management Division

Mr. Alcantara has almost 28 years of experience in planning and administrative work with the abilities required for managing construction projects. Garnered a Degree in Construction Management at Ashworth College in Georgia, USA, Construction Technology at El Camino College in Torrance, California USA, and a Project Management Certificate in CSU Dominguez Hills College of Extended and International Education in Carson, California USA. A managing partner of the company, he oversees the project management department and administers Risk Management, Loss Control Management System (LCM), and Quality Management System. The Company’s Business Development Manager handles all prospective clients and nurtures present clients to sustain a top-quality relationship, management, and project management system.


JVT photo


Director of Administration

Rosalia V. Tan is Chief Financial Officer and Treasurer of ORRA, Ms. Tan has oversight for financial reporting, cash management, Ms. Tan has extensive financial management experience, including funding, cash forecasting, and management, all strategic and tactical matters relating to budget management, cost-benefit analysis, forecasting needs, and securing of new funding.


OSCAR R. RUIVIVAR  AND ASSOCIATES or ORRA is a registered partnership firm since 1985. The firm was established and founded by Arch. Oscar R. Ruivivar, a registered Architect and co-founded by Engr. Enrique L. Cortes, a registered Civil Engineer. Arch. Ruivivar had spent his formal professional training and experience with the office of Jorge Y. Ramos and Associates, one of the Philippine reputable architectural firms. While Mr. Cortes, had his extensive experience acquired with his years spent with Atlantic Gulp Philippines or AG&P. They formed the partnership that started the professional design consultancy and project management services. Through the years, the firm has delivered successful various projects from small, medium-sized to more complex projects. The firm has significantly gained satisfied clients. And as a result of these completed successful projects, the firm continue to increase in size and eventually expanded. Today, ORRA cemented its name by doing landmark projects which defined its position in the construction industry.

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