Sears made his List A debut for Wellington in the 2018–19 Ford Trophy on 24 October 2018.
[2] Prior to his List A debut, he was named in New Zealand's squad for the 2016 Under-19 Cricket World Cup.
[3] He made his first-class debut for Wellington in the 2018–19 Plunket Shield season on 6 December 2018.
[13] In August 2022, Sears was named as a replacement for Matt Henry, who was ruled out of the West Indies tour due to rib injury.
[21] In May 2024, he was named as a reserve player in New Zealand’s squad for the 2024 ICC Men's T20 World Cup tournament.