As a player, Gleeson played in the Civil Service League with Blacklions and in the Dublin Women's Soccer League with Ballymun United and Hamman Celtic.[1] She characterised herself as a hard-working but limited player: "I wouldn't be highlighting anything about my playing days."[2]
Gleeson signed off with a 2-1 away win over Finland. The team subsequently went on to qualify for their first world cup finals appearance with a playoff win over Scotland in October 2022.
Glasgow City
Glasgow City announced that Gleeson would take over as their new head coach in November 2021, part way through the 2021–22 Scottish Women's Premier League season.[13] The team had dropped points against their rivals Celtic and Rangers and sat 3rd in the table under interim coach Grant Scott. City, who had won the previous 14 titles were eventually beaten to the championship by Rangers – The team rallied under Gleeson to score 55 goals in 18 games securing Champions League Qualification ahead of Celtic. They lost out to Celtic in both the Cup Finals.
The draw for the 2022/23 Champions league pitted Glasgow in a qualifying group with Paris FC, Roma and Servette, who had beaten City the previous campaign. A 3-1 loss to Roma and a 1 - 0 defeat to Servette ended the campaign early.
In the 2022–23 Scottish Women's Premier League season, Glasgow City got off to a flying start with 11 wins and 1 draw in their first 12 games. They sat on top of the table at the end of 2022. It came as a surprise when it was announced that Gleeson was stepping down to return to Ireland. "I would like to sincerely express my gratitude to all at the club for providing the opportunity to be involved with such an iconic women's football club such as Glasgow City," she said. Glasgow City ultimately regained the championship under Leanne Ross, who was promoted from Assistant to Head Coach after Gleeson's departure.
In total Gleeson oversaw 30 SWPL games, winning 26 and losing just once.
Ireland (head coach)
In August 2023, Gleeson was appointed interim coach following the departure of Pauw,[14] and in December 2023 her appointment was made permanent.[15]
In December 2024, Gleeson's tenure as head coach came to an end as the FAI chose not to offer her a new contract.[19]
FAI Head of Women and Girls Football
As Head of Women and Girls Football in the FAI, Gleeson was responsible for helping to grow participation and retention of women and girls at all levels of the game, while also supporting wider football development strategies, ensuring a pathway for every woman and girl in Ireland to achieve their full potential.
* Gleeson joined the Glasgow City team part way through the 2021/22 season. She took charge of 18 of the 27 League games and finished runner up.
** Gleeson took charge for 12 games of the 2022/23 season gaining 34 of 36 points available. The team finished the season as champions with 83 points from 32 matches.