CareerPlan

Senior Software Engineer, AI Evaluation Infrastructure

United StatesFull-time$170k–$200k2026-10-27 → 2026-11-10
Based in United States

Core

Build infrastructure for frontier AI labs to evaluate coding agents and language models, including benchmark datasets, agent evaluation runs at scale, and automated task quality checks.

Role type

Senior IC backend engineer (AI evaluation infrastructure)

Builds

Benchmark datasets, agent evaluation runs, automated task quality checks, and evaluation harnesses for frontier AI labs.

Domain

Artificial Intelligence / Machine Learning Evaluation

Deliverable

production ML models

Required skills

Python, Django, PostgreSQL, Celery, LLM evaluation, task quality judgment, system design, tradeoff analysis, ownership, TypeScript, React

Preferred skills

Sandbox/containerized environments (Docker, Kubernetes, Modal, Daytona), LLM-as-a-judge, rubric-based grading, coding agents (Claude Code, Codex, OpenHands), distributed job scheduling, open-source contributions

Technologies

Python, Django, PostgreSQL, Celery, TypeScript, React, Docker, Kubernetes, Modal, Daytona

Responsibilities

Design and ship end-to-end features (data model, API, background workers, UI); Build and improve agent/model evaluation systems; Improve benchmark task quality checks; Integrate new models/agents/benchmarks; Maintain system performance and reliability; Review pull requests

Seniority

Senior, hands-on IC