Sales Development Representative, Account Expansion (Existing Customers)

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Sales Development Representative, Account Expansion (Existing Customers) based in United States . In this role, you will focus on developing existing customer relationships and unlocking new revenue opportunities within an established client base. You will identify opportunities to introduce additional products and services, with a particular focus on invoicing and payment solutions. Through proactive, high-volume outreach, you will help customers maximize the value of the platform while generating qualified expansion opportunities. Working closely with Customer Success, Payments, and Onboarding teams, you will contribute to stronger customer adoption and long-term growth. As the first representative dedicated to this function, you will also play an important role in shaping the account expansion strategy, refining outreach approaches, and building scalable processes. This is an exciting opportunity for a motivated sales professional looking to grow within a collaborative, fast-paced B2B SaaS environment.