Exposed at an early age, Ar. Ariel O. Daguman, UAP, worked as a designer and field supervisor in Coordinated Group Inc. During his early career, this served as the backbone of his training through the guidance of their president, Engr. Roberto J. David, PRC Commissioner, Ar. Yolanda David Reyes, FUAP, APEC Architects, ASEAN Architects, Hon FAIA, LIKHA. His ability to handle design problems, construction processes as well as regular supervision was elevated through his experienced as a project-in-charge of a 6-storey residential project in Moriones, Tondo. 

In 1998, he became a Job-captain in the Design and Production of working drawings in DENR-NRDC for numerous public infrastructure from public markets to wildlife centers, under the supervision of Ar. Canchela and Ar. Evangelista. 

Notable projects he contributed significantly from schematic design to construction phase, as the principal architect and construction manager, are CCFA School Campus in Calbayog City, North Hill Hotel and Spa in Northern Samar, 9-storey UST Beato Angelico Project, Letran Balanga School in Bataan, Letran Intramuros School, and the 4 branches of Eves Residences in Rizal and Marikina. 

Ar. Daguman has been deeply involved in the creation of various projects, including residential structures, commercial buildings, high-rise buildings, health facilities, and public infrastructures. He successfully combined design and construction to bring these projects to life. 

Avoiding formal preconceptions, he seeks to find coherence between functional requirements of the client and technique of construction together with the intangible qualities, which animate a work of architecture that always consider factors such as dreams and inspiration of the clients. 

In 2009, Ar. Daguman started his own office in Manila, and since then, his professional journey has been defined by a deep love for service and to promote his experience in designing and also in construction. He believes knowing from different experiences gives a designer a palette to create his own masterpiece.