Browse Jobs | JobMaxx

Press / to jump to search. Quotes find an exact phrase in the job post.

949 live matches100% show salary1 filters on

949 live matches

1 active filters

100% show salaryAverage in USD: $192,105 - $285,275

Showing 421-440 of 949

AI Systems Engineer, Codex Agents

OpenAI

San Francisco·$230,000 - $385,000

$230,000 - $385,000

senior

On-siteSoftware engineeringVerified

Source checked 12 hours ago.

Posted 3 months ago.

Preview below. Want everything? Open the full job page.

AI Systems Engineer - Codex Core Agents

About The Team

The Codex Core Agents team builds the agent harness that turns model capability into real-world action. We own the systems around the model: prompting and interpreting model outputs, executing actions safely in real environments, and feeding production experience back into better models and better agent behavior.

This team sits close to research and works across the stack: harness, model interaction, inference, sandboxed execution, orchestration, evals, production reliability, and the performance envelope around tokens, latency, cost, capacity, and quality.
The harness is open source and increasingly part of how models are trained and evaluated, making this one of the highest-leverage layers in Codex.

About The Role

We're looking for engineers to build the AI systems that make Codex agents dependable in production.
The ideal candidate is an agent-systems builder: hands-on across low-level systems and ML workflows, able to debug Codex behavior end to end across the harness, model behavior, inference/runtime stack, GPU fleet, and product surface.

You'll work with research, infrastructure, and product to design agent harness capabilities, run experiments and ablations across the model + system prompt + harness stack, build frameworks for assessing production agent performance, and turn messy failures into durable improvements.

Open the full listing for the complete description.

Open full job page Apply on source site

Report listing

Noticed something bad about this listing? Log in as a job seeker and report it so we can review it.

Apply Report

Jobs

Job listings

AI Systems Engineer, Codex Agents

Design Engineer

Software Engineer, Full Stack (People Innovation)

Security Engineer, Product

Staff Software Engineer, Backend (Search)

Engineering Manager, Platform

Staff Software Engineer, AI Voice and Content

Senior Manager, Engineering, Local Runtime (Central or East Coast Time Zone)

Solutions Engineer

Product Engineer - Enterprise

Information Security Engineer

Staff Software Engineer, Issue Workflow

Protection Scientist Engineer, Integrity

Security Engineer, Detection and Response, San Francisco

Full Stack Software Engineer, Codex

Staff Software Engineer, Unified Services Platform

Software Engineer, Data Acquisition

Design Verification Engineer

Senior Software Engineer, Backend (Infrastructure)

Staff Software Engineer (Continuous Integration)