CareerPlan

Software Engineer, Agent Runtime

San Francisco, CAFull-time2026-10-22

Core

Build the core systems, orchestration engine, and runtime primitives that power customer-facing AI agents.

Role type

Senior IC software engineer (AI agent runtime)

Builds

Agent SDK, orchestration engine, runtime, and evaluation frameworks

Domain

AI / Machine Learning / Software Engineering

Deliverable

production ML models

Required skills

software engineering fundamentals, building production systems, high-agency, system design, retrieval systems, evaluation frameworks

Preferred skills

AI-powered systems, agent frameworks, retrieval, evaluation systems, LLM-based applications, developer platforms, SDKs, Go, Typescript

Technologies

Go, Typescript

Responsibilities

Build the core systems that power agents; Design the agentic loop; Improve retrieval and grounding; Build evaluation systems

Seniority

Senior, hands-on IC