Affim, a remote-first company, seeks a Senior Technical Account Manager to own the operational health of strategic alliances, design custom integration solutions, and lead cross-functional initiatives. You will act as a technical lead, mentor teammates, and drive engagements from launch through end-of-life support. Initial focus is on keeping merchant integrations healthy via monitoring, triage, and SLA delivery, then expanding to end-to-end ownership of a dedicated book of accounts.