Software Engineer – Agent Harness

Software Engineer developing agent frameworks for hybrid (local + cloud) AI. Building tools and context management for efficient AI model operation.

Posted 6/16/2026full-timeSanta Clara • Arizona, California, Oregon • 🇺🇸 United StatesMid-LevelSenior💰 $170,500 - $315,490 per yearWebsite

Tools & technologies

CloudGoPythonRustTypeScript

Key responsibilities & impact

Design and build the agent loop: planning, tool invocation, observation handling, retries, termination
Implement tool integrations — file I/O, terminal / shell execution, web, MCP servers, message apps
Build context management: what goes in the window, when to summarize, how to use long / cross-session memory
Implement scheduling and automatic / background task execution
Keep the harness model-agnostic so local and cloud models are swappable behind one abstraction
Design agent security mechanisms through different approaches
Make the loop observable, debuggable: tracing, replay, and reproducible agent sessions

What you’ll need

BS/MS in CS, EE, Math or related STEM field
5+ years software development background
Strong in at least one of Python, TypeScript, Go, Rust, C++
Comfortable with async, concurrency, and process / subprocess management
Has built a project that calls external tools or APIs in a loop and handled the failure modes
Experienced at reading unfamiliar codebases and someone else’s runtime

Comp & perks

ATS Keywords

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Hard Skills & Tools

PythonTypeScriptGoRustC++async programmingconcurrencyprocess managementsubprocess managementtool integration

Soft Skills

problem-solvingdebuggingobservabilityreproducibilityadaptabilitycollaborationcode comprehensionproject managementcommunicationcritical thinking

Certifications

BS in Computer ScienceMS in Computer ScienceBS in Electrical EngineeringMS in Electrical EngineeringBS in MathematicsMS in Mathematics