Tetra Tech’s International Development Services division is one of the biggest development consultancies in the world, with a US$800m turnover, more than 250 active projects and a history of delivering for the world’s biggest donors. We serve the development agencies of the US, Australian, European, German and New Zealand governments, and multilateral development organisations including the UN and World Bank.

As part of Tetra Tech Inc.’s global corporate operations, we have 28,000 colleagues around the world, generating a US$5.3bn turnover, through consulting and engineering work for government and commercial clients. We work across infrastructure and urban development, energy, transport, water, resource management and international development.