Backend Software Engineer, API Multicloud
Backend engineer building and extending OpenAI's API platform into cloud-native environments like AWS, creating cloud-contained developer products and agentic infrastructure. Requires 7+ years experience and proficiency in backend languages and distributed systems.
About the job
Responsibilities
- Build backend and infrastructure systems that extend OpenAI’s API platform into cloud-native environments, like AWS
- Design and ship cloud-contained products that allow customers to use OpenAI capabilities while keeping workloads and data within cloud environments
- Help stand up cloud-hosted Codex experiences powered by the OpenAI Responses API
- Build the infrastructure and runtime abstractions for a stateful, cloud-optimized agentic platform
- Partner closely with external cloud partners as well as internal teams across Codex, Research, and Safety Systems to translate emerging capabilities into production-ready systems
- Improve the reliability, scalability, observability, and operational maturity of the services underpinning these products
- Help shape the technical direction of a new and growing team as it scales from an early core group into a larger engineering organization
Requirements
- 7+ years of professional engineering experience (excluding internships) in relevant roles at tech and product-driven companies
- Proficient in one or more backend languages (e.g., Python, Go, Rust, Typescript or similar) and distributed systems concepts
- Experience building developer tools, especially AI-powered tools
- Excellent technical communication and the ability to shape architectures that support different deployment models
- Experience turning ambiguous, fast-moving technical problems into pragmatic, durable systems
- Experience working with cloud infrastructure primitives and production service ownership
- Proven ability to thrive in fast-growing, product-driven companies by effectively navigating loosely defined tasks and managing competing priorities or deadlines
Nice-to-Haves
- Experience building cloud services
- Experience collaborating cross-functionally with platform, research, safety, or external partner teams
- Interest in AI infrastructure, agentic systems, and developer platforms
- Interest in AI/ML (direct experience not required)
Skills
Python, Go, Rust, TypeScript, Distributed Systems, Cloud Infrastructure, Backend Development, Developer Tools, AWS, API Development
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