INFRONEER Holdings Inc., together with its subsidiaries, provides infrastructure services in Japan. The company operates through five segments: Building Construction; Civil Engineering; Road Civil Engineering; Machinery; and Infrastructure Management. It engages in planning, design, construction, operation, and maintenance of infrastructure; contracting of construction work primarily for multi-dwelling complexes, factories, and logistics centers; and contracting of civil engineering work for bridges and tunnels. The company is also involved in the manufacture and sale of construction and industrial machinery, and other equipment, as well as asphalt mixture, emulsion, and other materials; architecture activities; and provision of paving construction services. In addition, it engages in renewable energy, concession, and related businesses. The company was incorporated in 2021 and is headquartered in Tokyo, Japan.