Backend Software Engineer, API Multicloud

OpenAI

Backend Engineer developing cloud-native solutions for OpenAI’s API platform. Collaborating with teams to enhance AI capabilities in cloud environments.

Posted 6/10/2026full-timeSan Francisco • California • 🇺🇸 United StatesSeniorLead💰 $293,000 - $385,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsGoPythonRustTypeScript

About the role

Key responsibilities & impact

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

What you’ll need

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 building cloud services is a strong plus.
Experience turning ambiguous, fast-moving technical problems into pragmatic, durable systems.
Experience working with cloud infrastructure primitives and production service ownership.
Experience collaborating cross-functionally with platform, research, safety, or external partner teams is a plus.
Interest in AI infrastructure, agentic systems, and developer platforms.
Interest in AI/ML (direct experience not required)
Proven ability to thrive in fast-growing, product-driven companies by effectively navigating loosely defined tasks and managing competing priorities or deadlines.

Benefits

Comp & perks

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, may also be provided.

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Hard Skills & Tools

PythonGoRustTypescriptdistributed systemscloud servicesdeveloper toolsAI-powered toolscloud infrastructureproduction service ownership

Soft Skills

technical communicationcollaborationproblem-solvingadaptabilityprioritizationnavigating ambiguityshaping architecturesteam leadershipscalabilityoperational maturity