The body has more than 150,000 members in 127 countries. The membership is made up of academics, researchers, engineers, technicians and electricians.
Its current president is Dr Mike Short, who is also vice-president at O2 owner Telefonica.
Harvard is charged with raising awareness of the Institution of Engineering and Technology and positioning it as the go-to source for engineering intelligence.
The brief centres around the body's work as a publisher of specialised research journals and books for academics, researchers and engineers.
Harvard has also been asked to raise awareness of the institution’s research platform, the IET Digital Library and the abstracts database IET Inspec, which currently holds more than 12 million records from global research literature.
Harvard MD Louie St Claire said: ‘While the Institution of Engineering and Technology has a great profile as a membership organisation, the quality and range of its online resources and offline publications are not as well-known as they should be. Our challenge is to correct this situation and expand the IET’s reach beyond its traditional academic market.’
The account will be led by director Pete Marcus. He will report to the body’s marketing campaigns manager Helen McDonald.