Full-Stack Software Engineer, Applied Foundations

We’re hiring Full-Stack Software Engineers to design and implement safe services, systems and infrastructure that power our core products.

In this role, you will:

• Architect, build, and improve frontend and backend systems.
• Work across the full stack to build products and systems from initial exploration through launch readiness.
• Participate in long-term architectural planning and technical design reviews.
• Collaborate with cross-functional teams to design solutions that protect against and mitigate adversarial attacks without compromising user experience.

• Have built and shipped full-stack apps or systems end-to-end - in fast-moving, startup-like environments.
• Have a humble attitude, an eagerness to help your colleagues, and a desire to do whatever it takes to make the team succeed.
• Enjoy building resilient products and services that handle large scale and complexity.
• Are self-directed and enjoy figuring out the best way to solve a particular problem
• Own problems end-to-end, and are willing to pick up whatever knowledge you’re missing to get the job done.

$185K - $385K medical insurance, dental insurance, vision insurance, parental leave, paid time off, paid holidays, 401(k), retirement plan United States, California, Mountain View Jun 18, 2026

OpenAI’s Applications Engineering organization builds and operates the products (such as ChatGPT & Codex) that bring our cutting-edge research to millions of users and developers worldwide.

The Applied Foundations team owns the core product and platform layers that make those experiences possible - from identity & access, to safety to payments & commerce across all of our apps. Our teams span product engineering, infrastructure, and safety, working together to deliver technology that is reliable, secure, and trusted at global scale., 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., At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.