[4][5][6] He studied a Bachelor of Arts degree in English in St Patrick's College, Dublin,[7] and graduated from University College Dublin, obtaining Master of Arts degree in creative writing in 2013.

[5][8] As a young author he won the Fantasy Book Review short story competition (2011)[9] and one of Literary Death Matches in Dublin (2014).

[10] Rudden debuted as a novelist in 2016 with Knights of the Borrowed Dark [pl],[11] described by the Internet Speculative Fiction Database as juvenile fantasy.

[20] The Irish National Council for Curriculum and Assessment chose Knights of the Borrowed Dark for the Junior Cycle English Indicative First Year Text List (2021–2023).

[3] During the COVID-19 pandemic, he regularly collaborated with the educational television programme RTÉ's Home School Hub, bringing writing tips and motivation to a national audience.