[Hiring] Senior Architecture & Performance Modeling Engineer @Positron Corporation

Role Description

As a Senior Architecture & Performance Modeling Engineer, you will help shape the architecture of our next-generation AI inference accelerators. You will work directly with chip architects to explore architectural options, quantify tradeoffs, identify bottlenecks, and turn modeling results into actionable design recommendations. This work starts before RTL exists. You will use analytical models and our in-house simulators to answer architectural questions quickly, then refine and validate those models as the design matures. Each engineer on the team takes primary modeling responsibility for a next-generation chip while contributing to a shared modeling framework.

Qualifications

• 5+ years of experience in computer architecture, microarchitecture, or performance modeling for accelerators, CPUs, or GPUs.
• Demonstrated experience using models to influence architectural decisions, such as identifying a bottleneck, comparing design alternatives, or recommending a change backed by quantitative analysis.
• A strong understanding of pipelines, queues, parallel execution, memory hierarchies, data movement, and interconnects.
• Hands-on experience building analytical, transaction-level, or cycle-level performance models, including first-order estimates that help validate and explain simulation results.
• Comfort working with incomplete specifications, making assumptions explicit, and balancing modeling fidelity with speed of iteration.
• Strong Rust skills, or expert-level C/C++ skills and a willingness to work in Rust day to day, along with proficiency in Python for workload analysis, experiments, and visualization.
• Ability to read SystemVerilog RTL and relevant verification results, reconcile them with architectural specifications, and calibrate models as implementation details become available.
• Excellent communication skills, with the ability to explain what drives a result, how much confidence to place in it, and what the architecture team should investigate or change next.

Requirements

• Experience with LLM inference, including attention, KV caches, quantization, mixture-of-experts workloads, and parallelism across multiple chips.
• A track record of connecting workload behavior and software execution choices to hardware performance.

Benefits

• The base salary range for this role is $220,000 – $270,000.
• Fully company-paid medical, dental, and vision insurance for you and your dependents.
• Company-paid life and disability coverage, with voluntary options to add more.
• Supplemental hospital, critical illness, and accident coverage available.
• Unlimited paid time off; we encourage everyone to truly unplug and recharge.
• 13 paid company holidays.
• Remote-first culture with a company-provided computer and home office setup.
• Competitive salary and equity.
• 401(k) with company matching, eligible from day one.