James Damore, the 28-year-old former Google engineer who was sacked by the corporation for allegedly "perpetuating gender stereotypes", made the claim in his first televised interview with a news media outlet.
"I support diversity and inclusion, and I think that also our lack of ideological diversity has hurt our products," he told Bloomberg Television on Wednesday.
Damore said that assumptions among "left-leaning circles" about conservative employees at Google had "hurt" his former employer in the interview. "It makes us alienate large portions of the population," he claimed.
Mr Damore's firing triggered widespread debate on gender differences and efforts to make the technology sector more diverse.
Women hold 26 percent of professional computing occupations in the U.S., and only 20 percent of Fortune 100 chief information officer positions being held by women in 2016, according to research by the National Center for Women and Information Technology.
Companies like Uber have been hit by allegations of pervasive discrimination and harassment against women.
In the wake of Damore's memo, more than 60 female employees are considering bringing class-action lawsuits against the company over alleged sexism and pay inequality, according to The Guardian.