CareerPlan

Harness Engineer, Director

Work from Home, United KingdomFull-time2026-10-22 → 2026-11-10

Core

Lead a new internal team to build the 'harness' environment that steers AI coding agents toward correct, maintainable, well-architected output, shifting quality enforcement from human audit to system control.

Role type

Director, AI Harness Engineering (hands-on IC leadership)

Builds

The harness environment including feedforward guides, feedback sensors, custom linters, verification loops, LLM-as-judge reviewers, and AI governance controls.

Domain

AI-assisted software engineering / Agent orchestration / Engineering tooling

Deliverable

production ML models

Required skills

AI coding agents (Claude Code, Codex), engineering tooling (linters, static analysis, CI/CD), spec-driven development, agent orchestration, systems mindset, AI governance, security surface for autonomous agents, distributed team management

Preferred skills

Evangelism, internal enablement, navigating organizational change from AI adoption

Technologies

AGENTS.md, containerized build/test environments, instrumentation/observability

Responsibilities

Design and build harness components (guides, guardrails, context); establish AI governance and quality-gating standards; manage and coach a geographically distributed team; define observability measures for agent work; partner with product management to align harness with roadmaps.

Seniority

Director, hands-on IC leadership