<text>  A female CEO has apologized to every mother she has ever encountered in the workplace for silently slandering their commitment to their jobs. PowerToFly President Katharine Zaleski admitted, in a first-person piece for Fortune magazine, that she didnt realize how awful she had been - until she became a mother herself. The 34-year-old, who lives with her husband and daughter in Brooklyn, New York, recalled one instance where she made a silent presumption about a Time managing editor. Ms Zaleski presumed that she was too much of a mother to follow through on a partnership idea - based on the pictures of the editors children on her desk. Scroll down for video . PowerToFly President Katharine Zaleski pictured with her husband and daughter admitted, in a first-person piece that she had been horrible and didnt understand the position of working moms in the past - until she became one herself . PowerToFly President Katharine Zaleski admitted in an essay that she used to be a harsh critic of working moms during her time as an editor at Huffington Post and Washington Post . Ms Zaleski, a former editor at Huffington Post and The Washington Post in her twenties, wrote that she also judged women who couldnt make it to last-minute team drinks - even though they would arrive at work two hours earlier the next day. She also didnt speak up when another female editor said they should fire a woman who was pregnant. Working late became an obsession, she said, in order to show commitment to her job - even though mothers in the office would typically skew their days much earlier. Ms Zaleski wrote in Fortune: For mothers in the workplace, its death by a thousand cuts and sometimes its other women holding the knives. Soon after giving birth herself, Zaleski said that she believed her career was over and that she couldnt imagine going back to the office for ten hours each day. Soon afterwards she met Milena Berry who wanted to start a company that would allow women to work from home in a range of jobs. PowerToFly was born. And that Time editor whom she silently wrote off? Ms Zaleski explains that Cathy Sharick, mother-of-three, has now joined the business as executive editor. PowerToFly allows women to work from anywhere that suits them - from their home office to a coffee shop. Workers can take on full-time or part-time contracts, but as the company website states: We give you a lot of freedom and we expect a lot in return. Ms Zaleski said in several interviews this week that all the tools for moms to work remotely are already in place. Conference calls can be made on Skype, presentations shared on Google Docs, team planning completed on Jira. Women from 65 countries have joined the site to improve their chance at finding work - and have so far taken home a collective 1 million in pay, according to Ms Zaleski. The challenges are many, the co-founder wrote - and sometimes from career-driven, younger women who she described as hardliners about spending time in the office culture. She wrote: They dont realize how that culture pushes women out because its too often set up around how men bond. Many of these young women are just toeing the company line. I dont begrudge them. I feel sorry for them. Theyre hurting their future selves. Just like I did. 