Ciara Rossiter started at Forth Celtic before she made her first Women's National League appearances for Wexford Youths in 2012-13.
In the 2014–15 season, she was named in the league’s Team of the Season and was also awarded the Young Player of the Year as Wexford Youths won the title.
She played in the Champions League campaign that followed and in November 2015 Wexford Youths won the FAI Women's Cup for the first time.
In the final at the Aviva Stadium, Rossiter's injury-time equaliser helped them triumph against Shelbourne 4–2 on penalties after a 2–2 draw.
But in March 2016 she suffered an anterior cruciate ligament injury while playing in a Universities Cup final for Waterford Institute of Technology against Institute of Technology, Sligo.
Rossiter made her comeback two years later, only to be stretchered off again during their opening day 5–0 win over Limerick but the fullback showed great character to overcome her serious injuries and she was voted by the public to be the Youths Women's Player of the Year in 2020.
Rossiter has made one appearance for Ireland, appearing against the USA in a friendly back in May 2015 friendly but she has enjoyed plenty of success at club level with Wexford winning four leagues, four FAI Cups, and a WNL Cup during her time there.