Software Engineer, Financial Engineering

Triwill Group; San Francisco, Northern (CA, KY); Hybrid; USD 170,000 - 260,000; Full time

Benefits offered by this job

Payments experience

Subscriptions experience

Billing & invoicing experience

Job summary

OpenAI, a leading AI research and deployment company, seeks a software engineer for backend and distributed systems work that powers production services across ChatGPT, Codex, and API platforms. You will own critical systems from design to operations, focusing on correctness, reliability, observability, and security.

We value product-minded engineers who can collaborate with Product, Finance, Operations, and Go-to-Market teams and move quickly as requirements evolve, while ensuring scalable,

Qualifications

• 5+ years of professional software engineering experience building and operating production backend, platform, or distributed systems.
• Strong fundamentals in API design, data modeling, storage systems, transactional workflows, and event-driven architecture.
• Experience delivering highly correct, reliable, observable, secure systems for business-critical workloads.

Responsibilities

• Own ambiguous, business-critical problems from definition through launch and operation.
• Design scalable backend architectures with product-oriented mindset for external customers and internal users.
• Collaborate with Product, Finance, Accounting, Operations, Data, and Go-to-Market teams.
• Ensure tradeoffs between near-term delivery and long-term system quality.
• Move quickly and independently in a dynamic environment where priorities evolve.

Skills

Backend system design

API design

Data modeling

Event-driven architecture

Reliability & observability

Cross-functional communication

Tools

SQL databases

Distributed systems tooling

Kafka

Job description

About the team

OpenAI’s Applied AI organization turns our latest model capabilities into products used by hundreds of millions of consumers, developers, and organizations worldwide. Our teams build the product experiences and platform foundations behind ChatGPT, Codex, our API platform, and offerings for businesses, enterprises, educational institutions, and other customers. Financial Engineering powers how customers purchase, access, and pay for these products. We build the systems behind pricing and packaging, checkout, payments, subscriptions, usage‑based billing, credits, entitlements, invoicing, and the broader order‑to‑cash lifecycle. Our work spans consumer subscriptions, self‑serve businesses, sophisticated enterprise agreements, developer usage, and emerging monetization models. These systems sit at the intersection of product experience and financial infrastructure. They must make it easy for customers to adopt OpenAI products while maintaining strong guarantees around correctness, reliability, security, reconciliation, and auditability. We partner closely with Product, Data Science, Finance, Accounting, Risk, Operations, and Go‑to‑Market teams to launch new offerings and build a financial platform that can evolve with OpenAI’s rapidly growing product portfolio.

In this role, you will:

• Have 5+ years of professional software engineering experience building and operating production backend, platform, or distributed systems.
• Have strong fundamentals in API design, data modeling, storage systems, transactional workflows, and event‑driven architecture.
• Have experience building systems where correctness, reliability, observability, security, or data integrity are especially important.
• Are comfortable owning ambiguous, business‑critical problems from initial definition through launch and long‑term operation.
• Bring a product‑oriented mindset and care about creating simple, trustworthy experiences for both external customers and internal users.
• Communicate clearly with technical and non‑technical partners and enjoy working closely with Product, Finance, Accounting, Operations, Data, and Go‑to‑Market teams.
• Make thoughtful tradeoffs between near‑term delivery and long‑term system quality.
• Move quickly and independently in an environment where requirements evolve, priorities compete, and the right solution is not always obvious.

Nice to Have:

• Experience with payments, subscriptions, billing, pricing, credits, entitlements, invoicing, revenue systems, or other monetization infrastructure.
• Experience with high‑scale financial or transactional systems, reconciliation workflows, compliance requirements, or audit controls.
• Experience building shared platforms, APIs, frameworks, or developer tools used by multiple product teams.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general‑purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity.

We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US‑based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non‑public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.

We are committed to providing reasonable accommodations to applicants with disabilities.

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