CareerPlanSign in

Senior Software Engineer, Cortex Quality

US-CA-Menlo Park💼 Full-time🗓 2026-08-13 → 2026-09-25

Core

Own the quality, efficiency, and reliability of Cortex Code, Snowflake's coding agent for data engineering workflows, by building eval harnesses, running experiments, and optimizing costs.

Role type

Senior IC AI/LLM agent quality engineer

Builds

Eval harnesses, agent behavior refinements, cost/latency optimization systems, production debugging loops, data pipelines for task insights

Domain

AI/LLM agents, data engineering, software quality assurance

Deliverable

production ML models | product features

Required skills

Python, TypeScript, Go, systems thinking, experimental design, production debugging, data pipeline construction, model evaluation

Preferred skills

agentic coding tools, LLM observability, safety/guardrails, data modeling, RAG, semantic layers

Technologies

Python, TypeScript, Go, LLMs, eval harnesses, data pipelines

Responsibilities

Design and refine agent behaviors for real coding workflows; build eval harnesses and diagnose failure modes; drive down cost and latency without regressing quality; debug production failures and increase robustness; build data pipelines for task insights; onboard and evaluate frontier models

Seniority

Senior, hands-on IC

Sourced via ashby · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.