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Principal Software Engineer, Full Stack

Full-time

OpenAI

Responsibilities

  • Set technical and product direction for significant areas of Codex and translate product vision into scalable architectures and engineering strategy.
  • Lead complex initiatives spanning client applications, backend services, agent systems, cloud infrastructure, and developer tooling.
  • Design AI-powered workflows that work across languages, codebases, development environments, and organizations.
  • Make high-consequence architectural decisions and establish standards for reliability, observability, performance, experimentation, and evaluation.
  • Align stakeholders across teams and drive work from exploration through launch and iteration.
  • Partner with product, design, research, infrastructure, security, and go-to-market teams.
  • Engage with developers, open-source maintainers, startups, and enterprises to identify foundational opportunities.
  • Review critical designs, mentor engineers, improve engineering practices, and contribute directly to technically demanding implementation.

Requirements

  • Experience leading the design and delivery of technically complex, user-facing systems with impact beyond a single feature or team.
  • Deep software engineering expertise across product interfaces, distributed systems, infrastructure, and developer tooling.
  • A track record of setting technical direction, creating clarity in ambiguous problem spaces, and aligning multiple teams or disciplines.
  • Hands-on technical leadership experience, including architecture, mentorship, and complex decision-making.
  • Deep understanding of modern software development workflows and AI agent interaction and system design.
  • Experience building or operating AI-powered products, including understanding of nondeterminism, evaluation, latency, reliability, safety, and evolving model capabilities.
  • Strong product judgment and the ability to balance speed, product learning, technical quality, and long-term leverage.
  • Ability to communicate clearly across engineering, product, design, research, and executive audiences.
Vacancy posted 1 day ago
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