Modeling Architect

Position Overview

Key Responsibilities

• Bring up inference workloads as they ship, including dense and Mixture of Experts (MoE) transformers, hybrid/SSM models, prefill versus decode, KV cache, expert routing, and quantization, plus retrieval, speech, vision, and recommendation workloads where they map onto the accelerator.
• Bind Hugging Face and PyTorch workloads to the programming model and run them on the functional model.
• Co-design tiling, scheduling, the instruction set architecture (ISA), the SRAM and High Bandwidth Memory (HBM) hierarchy, and multi-chip mapping.
• Build in one or more layers of the modeling stack: roofline and limiter studies; Python energy and latency models; C++ functional models of optical GEMM, SRAM vector processors, dataflow engines, and HBM; cycle-approximate performance and power models; and RTL simulation with Verilator and SystemVerilog.
• Own the tests, configs, and plots behind a result so anyone can rerun it and see what was assumed.
• Use coding agents on real multi-file edits, and own the review of the C++ and SystemVerilog they generate.
• Share results with the architects setting the design, as well as the compiler, runtime, and RTL teams, and carry their questions back into the model stack.

Qualifications

• BS or MS in Computer Engineering, Electrical Engineering, Computer Science, or a related field.
• 3+ years of experience in hardware modeling, performance simulation, computer architecture, or related work.
• Proficiency in Python or modern C++ (C++17 or later). Python-first and C++-first backgrounds are both welcome.
• Working knowledge of computer architecture and microarchitecture, including pipelines, caches, memory hierarchies, and instruction set architecture (ISA).
• Ability to turn an LLM, GEMM, or accelerator paper into a workload config using Hugging Face or PyTorch.
• Strong debugging skills and the habit of writing down what was run, what was assumed, and what the number means.

Preferred Skills

• MS or PhD in Computer Engineering, Electrical Engineering, or Computer Science.
• Experience with roofline analysis, limiter analysis, GPU benchmarking, or correlating a model against published numbers.
• Event-driven, cycle-approximate, or cycle-accurate simulation with SystemC, gem5, SST, or a custom kernel.
• SystemVerilog, Verilog, Verilator, or RTL co-simulation.
• Memory and interconnect experience with HBM, DRAM, cache, SRAM, network-on-chip (NoC), AXI, or DMA.
• Familiarity with CUDA, GPU programming, or PyTorch internals.

What We Offer

• This is an opportunity to play a pivotal role in an innovative startup redefining the future of AI hardware. Work on game-changing technology at the intersection of photonics and AI as part of a collaborative, brilliant team. You’ll contribute to a platform that redefines computational performance and accelerates the future of artificial intelligence. Come help us bring this transformative technology to the world.

Benefits

• Join a team that invests in your future and your well-being. At Neurophos, we offer:
• 100% coverage of base health plan premiums for you and your dependents, plus HSA contributions.
• Unlimited PTO. No rigid vacation banks, just a focus on delivery.
• 401(k) matching and stock option opportunities to ensure our success is your success.
• Full suite of voluntary benefits, including Dental, Vision, Life, Hospital, Critical Illness, and Accident insurance.
• Personalized Benefits. Choose the plans that fit your life and take the cash back for those that don’t.