Software Engineer, API Multimodal

OpenAI OpenAI · AI Frontier · San Francisco, CA · Core Product & Platform

Software Engineer on the API Multimodal team at OpenAI, responsible for building and operating high-scale APIs for image generation, speech transcription, speech generation, and low-latency voice interactions. The role involves integrating new research capabilities into production, designing and shipping developer-facing APIs and backend services, and ensuring the reliability, latency, scalability, and cost efficiency of these services. It requires strong backend and systems engineering depth, product judgment, and experience with complex distributed systems.

What you'd actually do

  1. Design, build, and ship developer-facing APIs and backend services that serve frontier models.
  2. Architect low-latency streaming, request, session, and model integration systems that make complex multimodal interactions reliable and intuitive at scale.
  3. Work directly with Research to bring new model capabilities into production, shape the systems around them, and incorporate feedback from real-world developers and customers.
  4. Own the availability, latency, scalability, and cost efficiency of the services you build.
  5. Own projects from technical design and implementation through launch and ongoing iteration, while raising the team’s engineering standards.

Skills

Required

  • Backend engineering
  • Systems engineering
  • API design
  • Distributed systems
  • Production infrastructure
  • Python
  • Go
  • Rust
  • TypeScript
  • Scalability
  • Latency
  • Observability
  • Product judgment
  • Developer empathy

Nice to have

  • Real-time streaming
  • Audio processing
  • Speech systems
  • Image generation
  • Computer vision
  • Multimodal AI applications

What the JD emphasized

  • 7+ years of professional experience
  • track record of designing, building, and operating production backend services, developer-facing APIs, or distributed systems
  • leading technically complex projects

Other signals

  • API development
  • multimodal models
  • production infrastructure
  • low-latency systems
  • developer experience