The appointment follows the company’s flotation on the London Stock Exchange’s AIM market last April.
The agency has been brought in to raise the brand’s profile, drive customer acquisition and accelerate company growth. It will be responsible for creating integrated campaigns and positioning the brand among target audiences.
The account will be led by Harvard director Ellie Bennett and work starts immediately.
Chief marketing officer at Rosslyn Analytics, Lance Mercereau, said: "The Harvard team impressed us with its creative ideas, and demonstrated a thorough understanding of our audiences. Our planned campaigns go well beyond traditional media relations with a focus on tailored stakeholder management across multiple engagement channels."
Harvard MD Louie St Claire said: "The UK is fast becoming a global hub for big data innovation, and Rosslyn Analytics is becoming one of its biggest success stories."