Founding Product Engineer
Cardinal, San Francisco, California
The role
Product Engineer
As a Product Engineer at Cardinal, you'll work on the surfaces our customers — founders, GTM leaders, sales engineers — live in every day. That includes our sequence and enrollment system (per-lead customization, multi-sender, conditional branching), the agent layer (the embedded AI agents that draft, research, and enroll on behalf of the user), and the eval and observability tooling that lets customers trust an AI to run their pipeline.
Cardinal is a system of action sitting on top of every GTM data source — CRMs, enrichment APIs, LinkedIn, intent signals, website visitor data. Our job is to make all of that feel like one beautifully designed product, not a plumbing project. You'll work directly with the founders, ship to production every week, and have an outsized influence on what the product becomes.