Principal Performance Modeling Architect – AI Accelerators

Oho Group; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Oho Group in the San Francisco Bay Area is seeking a Principal Performance Modeling Architect to lead a system-level performance modeling platform that informs silicon architecture decisions before tape-out.

You will build and extend analytical models, evaluate AI hardware architectures, and drive design choices with simulation-backed analysis, collaborating with architecture teams and mentoring junior engineers.

Qualifications

• 5+ years' experience in performance modeling, computer architecture, or systems performance engineering.
• Strong understanding of AI accelerators, GPUs, HPC systems, memory hierarchies, and interconnects.
• Experience developing analytical or first-principles performance models rather than purely benchmarking hardware.
• Knowledge of AI inference and training workloads and how they utilise compute, memory, and networking resources.
• Strong Python development skills with experience building maintainable engineering tools.
• Ability to analyse complex simulation results and influence architecture decisions through data-driven insights.
• Excellent communication skills with the ability to explain technical concepts clearly.

Responsibilities

• Own and develop a system-level performance modeling platform for AI accelerator and cluster architectures.
• Build analytical models to predict performance, power, energy efficiency, and cost across different hardware designs.
• Expand support beyond LLM inference to training, multimodal, and vision workloads.
• Work closely with architecture teams to evaluate new silicon concepts and guide design decisions using simulation-backed analysis.
• Validate models against real-world AI frameworks and continuously improve accuracy.
• Improve platform scalability, automation, and maintainability.
• Provide technical guidance to junior engineers and collaborate with customers and partners where required.

Skills

Performance modeling

Computer architecture

Python

Data analysis

Communication

Job description

Oho Group in the San Francisco Bay Area is seeking a Principal Performance Modeling Architect to lead a system-level performance modeling platform that informs silicon architecture decisions before tape-out.

You will build and extend analytical models, evaluate AI hardware architectures, and drive design choices with simulation-backed analysis, collaborating with architecture teams and mentoring junior engineers.