builder; architect; constructor
Refers to a person who builds or constructs something, often used in contexts like nation-building, infrastructure, or organizational development. Not limited to licensed architects; can also mean a founder or pioneer.
He is known as a builder of a new society.
この橋の建設者たちは高い技術を持っていた。
The builders of this bridge had advanced skills.
建設業者 refers to a construction company or contractor, whereas 建設者 refers to an individual builder or founder.
Compound of 建設 (construction, building) and 者 (person). The word follows a common pattern for agent nouns in Japanese.