Chadwick will work in the Grove team's simulator and attend three European races, the first being the British Grand Prix, as well as performing “a number of media and marketing activities”.
“It is a great honour to be joining the Williams Racing Driver Academy,” said the 21-year-old.
“The time in the simulator is a fantastic opportunity to aid with my development.
“I look forward to spending time in the factory at Grove, immersing myself within the team and assisting wherever I can. Being a part of the Driver Academy is an amazing platform and I'm excited to get started.”
Chadwick claimed the 2018/19 MRF Challenge title and is also a race winner in British Formula 3.
Claire Williams, Williams' Deputy Team Principal, said, “I am delighted to confirm that Jamie Chadwick has joined the Williams Racing Driver Academy in the role of Development Driver.
“I have had the pleasure of watching Jamie race first hand in Hockenheim where she claimed victory at the season opening W Series race.
“Alongside her on-track commitments, Jamie will undertake simulator work for Williams, be immersed both trackside and at the factory with the team and will participate in marketing activities.
“Promoting women in motorsport is extremely important and having a female role model as part of our Driver Academy will hopefully inspire young girls to take up racing at a young age.
“We hope to show that motorsport is inclusive and exciting, be that as a driver or on the engineering side. Jamie is a great talent and I look forward to working with her.”
Chadwick joins reserve driver Nicholas Latifi in the Driver Academy.