Rhomberg Rail Holding GmbH provides railway track construction and engineering services. The company is based in Austria. Rhomberg Rail Holding GmbH operates as a subsidiary of Sersa Group AG. Rhomberg Sersa Rail Holding GmbH provides railway engineering and infrastructure services. It offers railway engineering consultancy, design and planning, and project and construction management services, and railway infrastructure services that include track construction and renewal, track maintenance, cable and railway civil engineering, tunnel renovation, switch point renewal, and slab track.