Boshier debuted for Taranaki during their Premiership winning season of 2014, however due to strong competition for places he only appeared once that year. He established himself as more of a regular in 2015, making 8 appearances as the Bulls reached the competition's semi-finals before going down to. 2016 was largely a year of frustration as injury held him back in the early part of the year and once fit again he mostly had to make do with substitute appearances in a competitive Taranaki side which once again made the Mitre 10 Cup semi-finals.
Season ending injuries to flankers Mitchell Karpik and Sam Henwood, saw Boshier called into the Chiefs Super Rugby squad early in 2016. He acquitted himself well at that level and featured in 7 games, scoring one try as his side reached the semi-finals of the competition. He was subsequently promoted to the franchise's full squad for the 2017 Super Rugby season.