Multimodal API Engineer — Low-Latency Backend Systems

Triwill Group; San Francisco (CA); On-site; USD 190,000 - 270,000; Full time

Job summary

OpenAI in San Francisco is seeking a Software Engineer for API Multimodal to help design, build, and operate developer-facing APIs and backend services that power image, audio, and real-time model capabilities.

You will architect low-latency streaming, manage distributed systems, and collaborate with Research, Inference, Safety, and product teams to ship reliable APIs at scale. 7+ years experience and strong systems fundamentals required.

Qualifications

• 7+ years of professional experience in backend, infrastructure, platform, or product engineering roles.
• Track record designing, building, and operating production backend services, developer-facing APIs, or distributed systems.
• Proficiency in one or more general-purpose backend languages such as Python, Go, Rust, or TypeScript.
• Experience building reliable, scalable systems and reasoning about distributed architecture, latency, observability, and tradeoffs.
• Strong product judgment and developer empathy for turning complex capabilities into clear, intuitive APIs.
• Clear communication and collaboration with researchers, product managers, designers, infrastructure engineers, and customers.

Responsibilities

• Design, build, and ship developer-facing APIs and backend services for frontier models.
• Architect low-latency streaming, sessions, and model integration systems at scale.
• Collaborate with Research to bring new model capabilities into production and gather feedback.
• Own availability, latency, scalability, and cost efficiency of services.

Skills

Python

Go

Rust

TypeScript

API Design

Distributed Systems

Backend Services

Low-Latency Streaming

Concurrency

Observability

Scalability

Cost Efficiency

Job description

OpenAI in San Francisco is seeking a Software Engineer for API Multimodal to help design, build, and operate developer-facing APIs and backend services that power image, audio, and real-time model capabilities.

You will architect low-latency streaming, manage distributed systems, and collaborate with Research, Inference, Safety, and product teams to ship reliable APIs at scale. 7+ years experience and strong systems fundamentals required.