Senior Harness Engineer
Core
Design, build, and support the 'harness' environment that steers AI coding agents to produce correct, maintainable, and well-architected software output, shifting verification from human audit to system enforcement.
Role type
Senior IC Harness Engineer (AI Agent Infrastructure)
Builds
The harness environment including feedforward guides, feedback sensors, quality gating mechanisms, and observability tools for AI-assisted development.
Domain
AI Engineering / Software Development Lifecycle / Agent Orchestration
Deliverable
production ML models
Required skills
Software architecture, AI coding agents, engineering tooling, spec-driven development, quality gating, security guardrails, contract testing, systems mindset
Preferred skills
Mentorship, stakeholder communication, cost/speed/reliability trade-off analysis
Technologies
LLMs, CI/CD pipelines, containerized environments, static analysis, linters, Pact, AGENTS.md
Responsibilities
Design and deploy core harness components (guides, sensors, guardrails); establish quality gating and release criteria for agent-produced work; build LLM testing infrastructure; run the steering loop to prevent agent mistakes; improve observability of agent work; mentor engineers on harness practices.
Seniority
Senior, hands-on IC
