OpenAI
Software Engineer, Implicit Signals
$347K–$445K
San Francisco · Hybrid · Full-time · Posted Sep 29, 2026
About the job
Builds and operates a classification and evaluation platform that helps researchers and data scientists measure model behavior and improve models and products.
What you'll do
- Design services, APIs, pipelines, and tools for configuring and running classifiers and evaluations.
- Improve model-serving performance and operate the platform’s reliability, observability, and incident response.
- Partner with machine learning engineers, researchers, and data scientists to bring capabilities into production and improve their workflows.
What they ask for
- Experience designing, building, and operating software services or distributed systems at scale.
- Strong fundamentals in API design, concurrency, caching, performance, and failure recovery.
- Ability to investigate complex production problems and make architectural tradeoffs.
- Track record of owning software from design through deployment and ongoing operation.
Nice to have
- Interest in machine learning, data science, and statistics; model serving, ML platforms, or inference optimization experience is a plus.
- Fluency in using AI agents to work across multiple workstreams.
Pay
$347K – $445K USD base salary
AI focus
Builds classification and evaluation systems for assessing model behavior; improves model serving and inference efficiency and brings classification capabilities into production.
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