9 April 1982 
|Employer||Raidió Teilifís Éireann (RTÉ)|
|Known for||The Apprentice, Fáilte Towers, Republic of Telly, The Fear|
Maguire entered British television series The Apprentice in its fourth series as a 27-year-old marketing consultant, who says that when she first ran an office, she made £60,000 in six months with no training. She described herself as "the best saleswoman in Europe at the moment". The media portrayed her as "an ice maiden" and as resembling "someone frozen alive while chewing a wasp". She was fired in week 7 along with Jenny Celerier.
After leaving The Apprentice Maguire returned to Ireland. She has since embarked on a successful television career. In August 2008, she participated in the Raidió Teilifís Éireann (RTÉ) reality television show Fáilte Towers, where she reached the final. During the show she went to Castle Leslie with fellow contestant Don Baker. She has also been on radio with Ray Foley on Today FM.
In March 2009, Maguire was believed to be running a chain (two) of photography studios in Ireland.
She presents the long-running satirical clip show Republic of Telly on RTÉ Two. She was going to leave it to return to the UK in 2011 but decided to stay in Ireland and continue her work on the show. She notably rendered Ryanair chief executive Michael O'Leary speechless on this show when she asked him: "What's it like being the biggest prick in Ireland?" She has also recommended to Marty Whelan that he retire, accused the late Gerry Ryan of being "too old" for the Meteor Music Awards and queried if Gráinne Seoige cringes while watching The All Ireland Talent Show.
In September 2011, she was subjected to a mix-up when her pictures mistakenly appeared on the website of model agency Assets.
In 2012, she presented online TV show Snug TV.
- Nolan, Lorna (14 April 2011). "Jennifer to celebrate her birthday in style as Lau whisks her off to Milan". Evening Herald. Retrieved 14 April 2011.
- stated by herself on Republic of Telly, final episode, Season 3
- Cooper, Lorna. "Apprentice 2008 Contestants". MSN. Retrieved 10 November 2008.
- The Apprentice; Week 1 and 2.
- Bielenberg, Kim (25 March 2009). "Why we all need our Sugar fix". Irish Independent. Retrieved 25 March 2009.
- "Jennifers fired on The Apprentice". RTÉ. 8 May 2008. Retrieved 8 May 2008.
- Singh, Anita (7 May 2008). "The Apprentice: Jenny Celerier and Jennifer Maguire fired". The Daily Telegraph. Retrieved 7 May 2008.
- "13 Fáilte Towers celebrities announced". RTÉ. 25 July 2008. Retrieved 25 July 2008.
- O'Keeffe, Alan (9 August 2008). "Feisty Jennifer's no ice queen for Don as Failte Towers pair 'de-stress' in Castle". Evening Herald. Retrieved 12 August 2008.
- "The Apprentice – Notes to Editors" BBC Press Office, 17 March 2009.
- Butler, Laura (31 January 2012). "Oprah's Irish chef Stuart dumped from TV3's spring menu". Evening Herald. Retrieved 31 January 2012. "He will team up with presenters Dermot Whelan and Jennifer Maguire to record a sketch for the long-running comedy programme."
- "The Republic of Telly". RTÉ.
- "You're stuck with me on the Telly, says RTÉ's Jen". Evening Herald. 24 November 2011. Retrieved 24 November 2011.
- McBride, Caitlin (26 April 2010). "Jennifer's on-air jibe leaves O'Leary lost for words". Evening Herald. Retrieved 26 April 2010.
- Nolan, Anna (23 November 2010). "Jennifer Maguire, you're so much better than this dating show". Evening Herald. Retrieved 23 November 2010.
- Ryan, Alexandra (23 January 2012). "I loved hosting One Night Stand... but it was too risque for RTÉ - Jen". Evening Herald. Retrieved 23 January 2012.
- Ryan, Alexandra (9 September 2011). "Jen's shock at model agency web mix-up". Evening Herald. Retrieved 9 September 2011.
- "Vogue and Brian head back to Oz". Evening Herald. 26 January 2012. Retrieved 26 January 2012.
- "No surprise there! Jennifer Maguire, Bernard O'Shea and Keith Walsh unveiled as new 2fm hosts". Irish Independent. 29 January 2014. Retrieved 29 January 2014.
- "Tubridy is just a pal, I've got a boyfriend -- Apprentice Jennifer". Evening Herald. 21 October 2008. Retrieved 21 October 2008.