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# Software Engineer, Full Stack (Agent Platform) at Sapiom

- **Company:** Jack & Jill, Inc.
- **Location:** San Francisco, CA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Distributed Systems, Design of User Interfaces, Routing, Systems Architecture, Backend, Front End Software Development, Virtual Agents, Api Design
- **Published:** November 7, 2026
- **Apply:** https://www.juju.com/job/28_25303_f6f4bccbeab3471ff0e79f6e097b7a60

## About the Role

Architect and build core machinery for AI agent production, including real-time model routing and high-scale billing ledgers. Develop the control plane for agent authority and design credential-scoped permissions to ensure safe autonomous machine operations.

Requirements: Requires 4-7 years of professional experience owning production systems, specifically in high-stakes environments like payments or financial ledgers. Candidates must demonstrate mastery in designing for failure in distributed systems and possess a full-stack mindset for building user interfaces.

Key Skills: Full Stack Development, Distributed Systems, System Architecture, Billing Systems, Payment Ledgers, Real-time Routing, API Design, Idempotency, Error Handling, Credential Management, Infrastructure Engineering, Backend Development, Frontend Development