[1] After university, Donison worked as a professional actor,[2] including roles as Laertes in Hamlet[3] and Friar Lawrence in Romeo and Juliet.

[2] In September 2009, as part of the broader Anglican realignment, Donison stepped down as rector of the combined South Dundas parish of St. James, Morrisburg, and Holy Trinity, Riverside Heights.

After immigrating to the United States, Donison was formally installed by Archbishop Foley Beach and Bishop Todd Hunter in January 2017.

[9] On February 17, Donison was invested as vicar general for the Texas deanery in the Anglican Diocese of the South in addition to continuing his role as dean and rector at Christ Church.

[2] Donison is a board member at Trinity School for Ministry, where he pursued doctoral studies, and East African Christian College in Kigali.