Adding OpenAI models to a product or workflow requires more than connecting an API. Hiring an OpenAI developer brings specialized expertise to design, integrate, test, and optimize AI features so they work reliably within your existing applications and business processes.
What does an OpenAI developer do?
An OpenAI developer builds applications and workflows using OpenAI models, APIs, and developer tools. They combine software development with AI integration skills to create features such as chatbots, intelligent search, content generation, document processing, and workflow automation.
Depending on the project, OpenAI developers may:
- Select and configure OpenAI models based on quality, latency, cost, and application requirements
- Design prompts, structured outputs, tool calls, and multistep AI workflows
- Build chatbots, assistants, content pipelines, and other AI-powered features
- Connect OpenAI models with databases, APIs, business applications, and existing software
- Implement authentication, permissions, data-handling controls, and other security measures
- Test and evaluate AI outputs for quality, reliability, latency, and expected behavior
- Monitor API usage and optimize model selection, prompts, caching, and workflows to manage costs
- Fine-tune or customize models when the use case and available OpenAI capabilities support it
How to hire an OpenAI developer on Upwork
Upwork connects businesses with AI professionals experienced in OpenAI models, application development, and back-end infrastructure. The platform has facilitated more than $25 billion in economic opportunity for talent around the world. Follow these four steps to find an OpenAI developer for your project.
Step 1: Post your project
A clear job post helps OpenAI developers understand your use case, technical environment, and expected deliverables.
- Describe your AI use case, such as a chatbot, document workflow, intelligent search, content pipeline, or business automation
- Specify the OpenAI APIs, SDKs, models, or capabilities involved if you already know what your project requires
- List relevant requirements such as tool calling, structured outputs, retrieval, streaming, or third-party integrations
- Describe your existing application stack, databases, APIs, cloud infrastructure, and deployment environment
- Define deliverables, timeline, budget, and any requirements around security, data handling, or performance
- Adapt this software developer job description to fit your OpenAI project
Use the Job Post Generator, powered by Umaโข, Upwork's Mindful AI, to get started faster. Describe your needs in a few sentences and Uma will draft a customizable OpenAI developer job post. On Upwork, the average time from job post to first proposal is three hours.
Step 2: Review proposals
Focus on candidates who can demonstrate experience integrating AI into working applications rather than familiarity with OpenAI tools alone.
- Examine portfolios for deployed chatbots, AI workflows, search experiences, automations, or other relevant applications
- Confirm experience with the OpenAI API, SDKs, tool calling, structured outputs, and other capabilities your project requires
- Look for evidence of thoughtful approaches to evaluation, latency, reliability, security, and API costs
- Assess experience integrating models with databases, APIs, business applications, or existing software
- Read client feedback for technical execution, communication, and reliable delivery
Uma can conduct instant video interviews and provide side-by-side candidate comparisons to help you narrow your shortlist.
Step 3: Conduct interviews
Use interviews to understand how candidates design, evaluate, and operate OpenAI-powered applications in production.
- Ask candidates to walk through an OpenAI integration they've deployed and explain their technical decisions
- Discuss how they choose models based on quality, latency, cost, and application requirements
- Explore how they implement tool calling, structured outputs, retrieval, or other capabilities relevant to your project
- Ask how they test AI outputs and handle inaccurate, unexpected, or failed responses
- Discuss their approach to API security, data privacy, monitoring, version control, and deployment
- Review these AI developer and machine learning engineer interview questions for additional prompts
- Consider a small paid test project based on a contained integration or feature
Schedule and conduct interviews within Upwork Messages, where you'll receive a transcript and summary after each conversation.
Step 4: Hire and collaborate
Before development begins, align on deliverables, milestones, access, evaluation criteria, and ongoing responsibilities.
- Define milestones such as prototype, API integration, evaluation, application integration, testing, and production deployment
- Agree on success criteria for output quality, latency, reliability, cost, and other relevant measures
- Provide appropriate access to repositories, development environments, APIs, data sources, and cloud infrastructure
- Clarify responsibility for OpenAI accounts, API credentials, usage costs, deployment, monitoring, and ongoing maintenance
- Establish requirements for handling confidential or sensitive data and protecting API keys and other credentials
- Confirm ownership of source code, prompts, configurations, evaluations, documentation, and other project assets
- Choose a fixed-price contract for defined deliverables or an hourly contract for evolving or ongoing development
Use Upwork's contract workroom and Messages to keep communication, files, and approvals organized. Identity verification, Hourly Payment Protection, hourly tracking, and project funds help keep the engagement secure, while Uma can help track milestones and next steps.
Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.
The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.