Banking technology firm Calypso has expanded its quantitative staff with the addition of a new director of financial engineering.

David Kelly will be joining the San Francisco-based fintech company from Quantifi, a maker of risk management software.  He will oversee Calypso's financial engineering unit and report  to senior vice president of engineering Tej Sidhu, the company said Tuesday.

At Quantifi, Kelly was director of credit product development, managing the firm's quantitative and technical staff in providing pricing and risk-management solutions. Earlier, he was a senior trader on Citibank's CVA desk, and before that he was JPMorgan Chase's head of global analytics.

The hiring reflects Calypso's commitment to expanding its financial engineering staff, the company's news release said.

"We are always looking to break new ground in the OTC derivatives industry and David has a history of bringing new and valuable developments to the industry. We are excited to have him on board," Kishore Bopardikar, president and chief executive of Calypso, said in the news release.