Customer Success Manager (Founding)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Customer Success Manager (Founding) based in United States. This is a founding customer success role with the opportunity to shape the function from the ground up at a fast-growing technical SaaS company. You’ll build trusted relationships with strategic customers, from hands-on developers to senior product and business leaders. The role combines customer success, retention, expansion, and strategic account management across a growing customer base. You’ll help customers maximize the value of an API-focused platform by understanding their technical use cases and business goals. Working closely with Engineering and company leadership, you’ll turn customer feedback into actionable product insights and solutions. You’ll also create scalable playbooks, processes, and outreach strategies to support hundreds of customers efficiently. This is an ideal environment for a proactive, technically curious customer success professional who enjoys building rather than simply following established processes.