Performance Modeling Engineer

Stack

Responsibilities

• ▹Develop and maintain performance modeling tools and frameworks
• ▹Build models to evaluate system behavior across compute, memory, and interconnect subsystems, as well as distributed system scaling and bottlenecks
• ▹Run simulations and analytical models to support architectural tradeoff analysis
• ▹Collaborate with the performance modeling lead and system architects to answer forward-looking design questions
• ▹Analyze and interpret modeling outputs, translating results into actionable insights
• ▹Validate models against real system measurements and workload behavior
• ▹Contribute to improving modeling fidelity, usability, and scalability

Requirements

• ▹Strong software engineering or modeling background (e.g., simulation, systems modeling, or performance analysis)
• ▹Familiarity with system architecture fundamentals (compute, memory, networking)
• ▹Experience with programming and building technical tools or frameworks
• ▹Ability to reason about performance bottlenecks and scaling behavior
• ▹Strong analytical skills and comfort working with quantitative models
• ▹Ability to collaborate across teams and learn new system domains quickly

Nice to have

• ▹Exposure to AI/ML workloads or distributed systems
• ▹Experience with simulation tools, performance modeling, or systems analysis
• ▹Familiarity with data center infrastructure or large-scale systems
• ▹Experience working with performance data, benchmarking, or profiling tools
• ▹Interest in system architecture and hardware/software co-design

Soft skills

What we offer

• ▹Hybrid work model (3 days/week in office)
• ▹Relocation assistance

About the company

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity.