Staff Backend Engineer – Payments & Billing Systems

OpenAI, Inc.; San Francisco (CA); On-site; USD 230,000 - 350,000; Full time

Job summary

OpenAI is seeking Staff+ backend engineers to design and operate payments, billing, and financial systems that power ChatGPT, Codex, and our API platform across global markets.

You will build product catalogs, SKUs, bundles, workspace management, entitlements, usage metering, and APIs to turn usage into accurate bills. You’ll own reliability and security while collaborating with product, finance, and other engineering teams to ship scalable, auditable systems that customers trust.

Qualifications

• Staff+ engineers with strong backend experience.
• Experience in payments, billing, or financial systems is a strong plus, but not required.
• Experience with product catalogs, packaging and bundles, workspace management, entitlements, or usage metering.
• Experience building financial or transaction systems at scale, checking that records match across systems, or supporting compliance and audits.

Responsibilities

• Design and build systems for purchasing, payments, subscriptions, and billing across OpenAI products and global markets.
• Build product catalogs, SKUs, and bundles that let product teams launch new offerings and evolve how products are packaged.
• Develop workspace and entitlement systems that connect purchases and subscriptions to product access for individuals and teams.
• Keep charges and product access correct when requests are retried, updates arrive late, or another service fails.
• Build metering systems, data pipelines, and APIs that turn large volumes of usage into accurate bills, timely spending information, and records that are easy to trace and verify.
• Create reusable building blocks that let product teams launch new offerings, pricing, and payment options without rebuilding the foundations each time.
• Make complex financial workflows simple for customers and internal teams, using customer feedback and experiments to improve the experience.
• Scale and evolve live systems while protecting customer access, financial accuracy, performance, and security.
• Own problems from early design through launch and operation, working with product, design, finance, and other engineering teams to make and test important technical decisions.

Skills

Backend development

Payments domain

Billing systems

Data pipelines

API design

Security

Job description

OpenAI is seeking Staff+ backend engineers to design and operate payments, billing, and financial systems that power ChatGPT, Codex, and our API platform across global markets.

You will build product catalogs, SKUs, bundles, workspace management, entitlements, usage metering, and APIs to turn usage into accurate bills. You’ll own reliability and security while collaborating with product, finance, and other engineering teams to ship scalable, auditable systems that customers trust.