Jonathan is the Deputy Commissioner of Tasmania Police. He joined Tasmania Police in 1999 and during his career he has served in numerous areas across Tasmania including uniform, country, criminal investigation, drug investigation, human resources and traffic and public order. He spent the first 14 years in postings in Northern District before being promoted in 2015 to Inspector in Human Resources (later integrated as People and Culture) in Hobart. 

In 2017 he was promoted to Commander Western District.

In 2018 he was promoted to Assistant Commissioner in the Specialist Support portfolio (included commands of Operations Support, Education and Training, Special Response Counter Terrorism) and later moved to Operations (includes commands of Northern, Southern and Western District and Crime and Intelligence Command) in 2019. 

In 2022 he was promoted to Deputy Commissioner. 

Jonathan holds a Bachelor of Science (1999), Bachelor of Social Science (Police Studies) (2006), Graduate Certificate in Police Studies (2010) and a Bachelor of Professional Honours (Public Sector Leadership and Management) (2016).