Find the Best OpenAI Codex Jobs

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Rating is 4.9 out of 5.
4.9/5
On average from 2M+ reviews

Check out a sample of the 66 OpenAI Codex jobs posted on Upwork

$5
Fixed-price
Entry
Experience level

If this task can be completed, along with payment I will provide a very positive review and potential future works with much higher bud…

OpenAI CodexHTMLOpenAI Codex JobsAI-Generated Code
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30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

About us We are a fast growing direct response marketing and sales company in the home services space, with 100 plus people and a real…

OpenAI CodexAPISoftware DebuggingAI-Generated CodeWeb Application
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$1,000
Fixed-price
Expert
Experience level

Title: Senior TypeScript Engineer for MCP Gateway and Workflow Automation Platform We are looking for a highly skilled TypeScript engi…

OpenAI CodexPythonAmazon Web ServicesWeb ApplicationTypeScript
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30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

Please read the schedule requirement before applying: this role requires working 9:00 AM to 5:00 PM Pacific Time, Monday through Friday…

OpenAI CodexAPI DevelopmentAPI IntegrationGitHubPythonDevOpsDockerNode.js
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30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

[ABOUT THE ROLE] We use OpenAI Codex (GPT-5.6 Sol Ultra) to build internal systems, automation tools, and data products. We are not l…

OpenAI CodexBigQueryPrompt EngineeringOpenAI Codex JobsApplication IntegrationAPI IntegrationAPI TestingAI Model IntegrationIntegration TestingNode.js
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30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

Read all the way through including how to apply. If the instructions are not followed, your application will not be considered. About…

OpenAI CodexNode.js
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30+ hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

We are looking for a skilled and efficient developer who is highly proficient in using Claude Code (and AI-assisted coding tools) to he…

OpenAI CodexAI-Generated Code
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AI-Powered Interview Preparation Platform

Hourly ‐ Posted 15 days ago
Less than 30 hrs/week
Hours needed
1 to 3 months
Duration
Intermediate
Experience level

Develop a full-stack, AI-driven interview preparation platform using the MERN stack and generative AI. The platform will offer personal…

OpenAI CodexJenkinsOpenAI Codex JobsSQLSpring BootReduxMongoDBNode.jsHTML5JavaScript
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AI Voice Engineer for Real-Time Chat

Fixed-price ‐ Posted 15 days ago
$1,000
Fixed-price
Expert
Experience level

I run a production voice AI platform used by organisations in Australia, handling live call volume across two operational modes: daytim…

OpenAI CodexTelecommunications EngineeringNatural Language ProcessingArtificial Intelligence
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Urgent Hiring: Senior Salesforce Developer

Hourly ‐ Posted 14 days ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Expert
Experience level

About the Company: Attorney Assistant provides specialized virtual assistant services for law firms, helping legal teams improve effic…

OpenAI CodexSalesforce App Development
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