SuperApp
Software Engineer - Agent Harness
$315K
San Francisco, CA +1 · Full-time · Posted Sep 18, 2026
- Location
- San Francisco, CA
San Francisco, California, United States - Experience
- 6+ years of professional software engineering experience; 2+ years of production agent-related experience.
- Education
- Bachelor’s or Master’s degree in Computer Science or engineering, or equivalent practical systems engineering experience.
About the job
Design and build SuperApp’s secure, production-grade agent runtime for managing AI state, executing tools and code, and connecting models to external services.
What you'll do
- Architect stateful agent execution, including workflows that can pause, resume, and be versioned.
- Build isolated execution sandboxes, tool integrations, and security guardrails against prompt injection and jailbreaks.
- Optimize context use, latency, and cost; write design documents and mentor engineers.
What they ask for
- 6+ years of professional software engineering experience designing, scaling, and operating mission-critical distributed systems.
- 2+ years of production experience building or modifying agent execution environments, LLM orchestrators, or tool-calling frameworks.
- Expert proficiency in Go and Python, with understanding of concurrent programming, microservices, gRPC, and scalable API design.
- Experience with Docker and Kubernetes, sandboxing untrusted code, message brokers, Redis, and database design.
Nice to have
- Experience developing developer tools, SDKs, or extensible plug-in architectures.
- Experience with React and TypeScript for human-in-the-loop debugging interfaces or agent visual builders.
Pay
$230,00 to $315,000 USD base salary
Tools
Go, Python, Docker, gVisor, WebAssembly, microVMs, MCP, Kubernetes
AI focus
Build agent execution runtimes and tool-calling integrations; implement security guardrails, routing, context pruning, and caching for AI agent workflows.
Model-written summary · the original posting is authoritative