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# Senior/Staff Founding Full-Stack Engineer - Agent Systems

- **Company:** PEOPLE INC.
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Salary:** $200,000.0 - $300,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Software as a Service, Identity and Access Management, Software Engineering, Systems Architecture, Workflow Management Systems, AI Infrastructure, Reliability of Systems, Backend, Front End Software Development, Virtual Agents
- **Published:** October 27, 2026
- **Apply:** https://www.thejobnetwork.com/job/738dc125-0fd2-4178-9c3b-0138f723c8f6/seniorstaff-founding-fullstack-engineer-agent-systems

## About the Role

4+ years of professional software engineering experience
Proven experience designing and operating complex production systems
Strong backend and systems architecture proficiency
Ability to work in person in San Francisco, Monday through Friday
High level of ownership and ability to navigate ambiguity

Important Requirements

Experience working across frontend, infrastructure, data and product layers
Background in security, IAM, authorization or workflow orchestration
Experience with multi-tenant SaaS or AI infrastructure
Strong understanding of failure modes, threat models and system reliability
Ability to move quickly without compromising security or correctness

Nice to Have

Experience with permission and identity systems
Experience with secrets or privileged-access platforms
Experience with workflow engines and reconciliation systems
Experience with agent infrastructure and evaluation systems
Experience with sandboxes or virtualized execution
Experience with enterprise integrations
Previous experience in an early-stage startup with ownership of architecture and production

## Description

The role includes developing workflow systems capable of supporting long-running human and AI agent tasks, designing identity and authorization systems, and building secure credential infrastructure. The engineer will also work on sandboxed environments and production-grade APIs supporting next-generation AI systems.