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Data Scientist, Core Experimentation

OpenAI· Data Science
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Hybrid (Seattle)$293k - $325kFull-timePosted 5mo ago

About the role

Staff-level Data Scientist focused on evolving OpenAI’s core experimentation platform to improve statistical rigor, reliability, and usability across the company.

Responsibilities

  • Drive the statistical direction and technical strategy for OpenAI’s experimentation platform
  • Design and improve experimentation methodologies used across product and research teams
  • Build pragmatic solutions to real-world experimentation challenges, balancing rigor with operational simplicity
  • Improve the reliability and trustworthiness of experiment results, including detection and prevention of bias, logging issues, and data quality failures
  • Develop scalable analytical systems and pipelines in Python and distributed compute environments
  • Partner with engineers and product teams to improve experiment design, metric quality, and decision-making practices
  • Lead investigations into complex experimentation anomalies and measurement failures
  • Establish best practices for experimentation governance, interpretation, and statistical correctness
  • Mentor other data scientists and raise the overall technical bar for experimentation and causal inference

Qualifications

  • Experience building, scaling, or operating experimentation platforms at a large technology company
  • Deep expertise in statistics, causal inference, and online experimentation methodology
  • Strong understanding of practical experimentation challenges in production systems
  • Experience with variance reduction, CUPED, sequential testing, SRM detection, metric design, or heterogeneous effects
  • Strong coding and systems skills in Python and large-scale data processing frameworks (e.g. Spark)
  • Experience designing analytical data models and scalable experimentation pipelines
  • Ability to communicate complex statistical concepts clearly to technical and non-technical audiences
  • Track record of influencing technical strategy through hands-on technical leadership
  • Experience in large-scale product experimentation, ML experimentation, ranking systems, marketplace systems, or similar high-scale experimentation domains is highly valued

Skills

Required:Statistics, causal inference, online experimentation methodologyPythonSpark or large-scale data processing frameworksExperiment design and metric quality

Benefits

  • Medical, dental, and vision insurance for you and your family, with employer contributions to Health Savings Accounts
  • Pre-tax accounts for Health FSA, Dependent Care FSA, and commuter expenses (parking and transit)
  • 401(k) retirement plan with employer match
  • Paid parental leave (up to 24 weeks for birth parents and 20 weeks for non-birthing parents), plus paid medical and caregiver leave (up to 8 weeks)
  • Paid time off: flexible PTO for exempt employees and up to 15 days annually for non-exempt employees
  • 13+ paid company holidays, and multiple paid coordinated company office closures throughout the year for focus and recharge, plus paid sick or safe time
  • Mental health and wellness support
  • Employer-paid basic life and disability coverage
  • Annual learning and development stipend
  • Daily meals in our offices, and meal delivery credits as eligible
  • Relocation support for eligible employees
  • Additional taxable fringe benefits, such as charitable donation matching and wellness stipends
Last updated Sep 3, 2026. Interested? Apply on the company site.

About OpenAI

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Company profileWebsite

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