Gold and Goodlad will be responsible for running the agency and ensuring CHI's "big ideas" philosophy is ingrained in its culture. They will also retain their account management responsibilities.
The move is the first time the agency has awarded senior management titles to staff other than the founding partners, Simon Clemmow, Johnny Hornby and Charles Inge.
It reflects the company's growth - CHI now employs 70 staff - and its relocation to new offices in central London this week.
Gold, 32, joined the agency in 2002. She came from Lowe, where she was the account director on the £43 million Orange business. Gold spent nine years at Lowe, and was a board account director before being promoted to the new-business director.
Goodlad, a former Campaign Face to Watch, also joined CHI in 2002 as a senior planner. He was previously one of four planning partners at Rainey Kelly Campbell Roalfe/Y&R.
The 31-year-old Scot had worked with Clemmow while at Simons Palmer Denton Clemmow Johnson, having joined the agency in April 1996 before its merger with TBWA. There he worked on the Nike account and was promoted to the board following the merger.
Hornby said the decision to appoint two managing directors showed the agency was committed to ensuring planning had equal prominence with new business.
"It's crucial that no discipline becomes more important than another," Hornby said. "We want to create a strong balance."
Hornby added that handing the day-to-day running of the agency to Gold and Goodlad would enable the three founding partners to spend more time with clients.
As part of its growth plan, CHI recently hired Peter Walker, a veteran of agency finance departments, to oversee its group operations.
Walker, a former European chief financial officer at BBDO and Leo Burnett, will look after financial, internal and operational affairs for the ad agency and CHI's ventures in other disciplines.