# Founding Product Engineer at Cardinal

- Company: Cardinal (YC W26)
- What the company does: Revenue Agents for GTM teams. Backed by Y Combinator.
- Company website: https://trycardinal.com
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA, US
- Work setup: On-site
- Pay: $150K to $215K base salary per year (USD)
- Posted: 2026-05-08
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/trycardinal-ai/jobs/HwZIbQl-founding-product-engineer
- Page: https://www.1752.vc/careers/jobs/cardinal-founding-product-engineer/

## About the role

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.

## What they're looking for

- Have founded a company, been an early engineer at a YC-stage startup, or shipped a product 0→1
- Have built or worked at a GTM/sales/CRM/enrichment tool — Apollo, Outreach, Clay, Attio, HubSpot, Salesforce, Gong, Common Room, or anything in that orbit
- Are a power user of GTM tools yourself — you've actually run outbound, written sequences, and fought with deliverability
- Have worked on real-time collaborative interfaces, agent UIs, or eval/observability tooling
- Care about design at the level of Linear, Attio, Raycast, or Vercel — and have shipped UIs at that quality bar

Tags: Engineering