Senior Software Engineer, Full Stack - Sales Planning

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer, Full Stack - Sales Planning based in the United States. This role offers the opportunity to help build and scale an early-stage Sales Planning platform within a fast-growing, product-focused engineering environment. You will work across core capabilities such as quota, capacity, territory management, and an emerging AI-powered revenue planning agent. The position sits at the intersection of product discovery, engineering, architecture, and user experience, giving you meaningful influence over both technical direction and customer-facing functionality. You will turn ambiguous business challenges into reliable, scalable solutions while helping establish a shared platform foundation across products. Your work will also contribute to shaping how AI is integrated into enterprise sales performance management. This is a hands-on opportunity for an engineer who enjoys ownership, complex systems, and building products from the ground up.