​As a violist, Kieran's performances have been described as “skilful [and] beautifully vulnerable” (CutCommon), “[combining] technique and repertoire with mastery” (Raquel Bastos) to demonstrate “an artistic conviction that was a joy to witness” (CutCommon). Regularly in demand across Australia and the world, he has premiered pieces written for him by the likes of Connor D’Netto, Leilehua (Anne) Lanzilotti and Tilman Robinson; appeared as a featured soloist in concerts for Argo, Backstage Music and Restrung Festival; performed with groups such as Ensemble Offspring, the Bang on a Can All Stars and the Hong Kong New Music Ensemble; and toured China with the Sydney Dance Company. Regularly collaborating with musicians across all genres, Kieran has worked with the likes of Ed Kuepper (The Saints), Eskimo Joe, George, The Kite String Tangle, Kate Miller-Heidke, LÂLKA, Michael Bolton and Parkway Drive. As the core violist of indie chamber septet Nonsemble, he has toured across Australia and features on the band's three full-length albums and two EPs.

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​Kieran is the founder and co-director of the post-genre concert series Dots+Loops. Inclusively exploring the spaces in between a traditional classical concert, an underground club gig, and an experimental art show, the series takes exciting, adventurous and thought-provoking music and art of all kinds, and places it in relaxed, accessible spaces. Since 2014, the series has presented over thirty critically acclaimed concert experiences, with highlights ranging from a sold-out 2016 production with the Queensland Gallery of Modern Art, to the recent Nonstop Festival, a six-hour celebration of Brisbane and Australia's most exciting artists and musicians, spread across two stages. The series has provided unique performance experiences and opportunities for numerous emerging Australian artists, facilitated and debuted over a dozen new works from local composers, presented the Australian solo debuts of five acclaimed international artists thus far, and fostered a wide-ranging community of diverse yet like-minded art and music creators and lovers.

His ongoing commitment to culture and community has already been recognised at a national level, as the recipient of the 2022 APRA AMCOS Queensland Luminary Award for "sustained contribution to the creative music culture of Brisbane as a performer and artistic director".