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Software Engineer, API Engineer

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OpenAI

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Location:
United States , San Francisco

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

230000.00 - 385000.00 USD / Year
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Job Description:

Our team brings OpenAI’s most capable technology to the world through our developer platform: the OpenAI API. As the leading AI development platform, our API is used by millions of developers and the majority of enterprises around the world, and powers the majority of AI applications that you may use on a daily basis. Most recently, we’ve released gpt-5, gpt-realtime, Responses API, Agents SDK, and many other products and features. We are looking for a software engineer to own the design of our APIs. Our API is our product, and as such we treat its design and development with care and intentionality. Every endpoint, every field name, and every enum value is a product interface that we want to design well. We are looking for engineers who not only love building APIs, but who will also sweat the details around API design and have a discerning taste for well designed API experience. You will play a major role in shaping the future roadmap of the OpenAI API – by both building and designing it.

Job Responsibility:

  • Design and build products that we launch in API – extending existing endpoints, adding new endpoints, or rethinking our entire API suite
  • Play a major role in our API Review process – working with all other teams to ensure our APIs meet our design standard
  • Collaborate closely with the rest of the API team, our Developer Experience team, and our GTM team to make our APIs the best in the world

Requirements:

  • Appreciate taste in API design
  • Can thrive and operate independently in a fast-paced environment with ambiguous requirements and goals
  • Love building for other developers, and thrive on feedback from opinionated users
  • Are an engineer at heart, but are willing to lean into product decisions
  • Think of APIs as ladders
What we offer:
  • Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
  • 401(k) retirement plan with employer match
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
  • 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time (1 hour per 30 hours worked, or more, as required by applicable state or local law)
  • Mental health and wellness support
  • Employer-paid basic life and disability coverage
  • Annual learning and development stipend to fuel your professional growth
  • Daily meals in our offices, and meal delivery credits as eligible
  • Relocation support for eligible employees
  • Additional taxable fringe benefits, such as charitable donation matching and wellness stipends

Additional Information:

Job Posted:
February 21, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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