For what it's worth: The on-call support role is a 1-week obligation that rotates between all of the engineers on the team. As our sixth engineer, each engineer would only be on-call once every 6 weeks.

The role itself consist of being the:

- primary PagerDuty contact for server and application alerts and errors,

- primary contact for our dedicated support team to ask questions and triage new issues,

- primary code reviewer

Note that we do have a dedicated support team that answers emails and calls from our customer base. The on-call engineer is not responsible for that.