SAN FRANCISCO: GolinHarris has bolstered its b-to-b technology roster with four account wins.

The agency was recently hired by Symmetricom, a developer of timekeeping technologies, and instruments; Tier 3, an enterprise cloud platform provider; and Cloverleaf Solar, a start-up focused on developing commercial power-generation systems on government-owned properties. The firm was also hired by SDL, a customer-engagement management company.