Opus International Consultants Ltd. 
Opus International Consultants is a leading multi-disciplinary infrastructure with local reach and global connections. Opus operates in 5 major markets - Australia, Canada, New Zealand, the United Kingdom and the United States of America. Opus has over 3,000 engineers, designers, planners, researchers and advisors work with more than 12,000 clients.
Opus offer fully integrated asset development and management services at all phases of the lifecycle including concept development, planning, detailed design, procurement, construction, commissioning, operation, maintenance, rehabilitation and upgrading. In New Zealand, Opus operates from a network of 40 offices and employs over 1,700 staff which provide services on leading infrastructure projects for both the public and private sectors.