Browse Jobs | JobMaxx

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

2215 live matches100% show salary1 filters on

2215 live matches

1 active filters

100% show salaryAverage in USD: $164,963 - $270,284

Showing 1421-1440 of 2215

AI Systems Engineer, Codex Agents

OpenAI

San Francisco·$230,000 - $385,000

$230,000 - $385,000

senior

On-siteSoftware engineeringVerified

Source checked 21 minutes 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

Product Design

Optimization Data Analyst

Mid-Market Implementation Specialist - Americas (West)

Customer Activation Manager | Scaled

RE / RS - Foundations, Search

AI Systems Engineer, Codex Agents

Transfer Pricing Manager

Senior Account Based Marketing Strategist

Design Engineer

Administrative Assistant

Sr Staff Product Manager — AI & Product Led Motion

GPT Infrastructure Lead

Software Engineer, Full Stack (People Innovation)

Staff Product Designer, Customer & Partner Experience (CPEX)

Customer Support Specialist, Payments

Delivery Driver(05317) - 2368 E Robinson

Brand Strategist

Security Engineer, Product

Staff Software Engineer, Backend (Search)

Operations (Yard Hostler) Supervisor