Network Simulation Engineer

Eridu AI; Saratoga (CA); On-site; USD 120,000 - 190,000; Full time

Job summary

A Silicon Valley-based AI infrastructure company is seeking a highly motivated Network Simulation Engineer to lead the simulation of AI communication workloads across diverse data center network topologies. The ideal candidate will have a strong background in network simulation tools, a relevant degree, and programming skills in C++ and Python. This role offers the opportunity to work with a world-class team and directly impact AI infrastructure solutions, driving the future of AI performance.

Qualifications

• Exceptional early-career candidates will also be considered.
• 2+ years of relevant experience preferred.
• Strong understanding of AI system architecture required.
• Deep understanding of frontier model architectures, parallelism approaches and operational functionality
• Deep understanding of Ethernet, InfiniBand, and high‑performance data center networking technologies.
• Solid grasp of AI system architecture, including compute, memory, and interconnect bottlenecks in large‑scale training/inference clusters.
• Strong programming skills in C++ and Python.
• Clear and confident communication skills, both written and verbal.
• 2+ years of relevant experience preferred; exceptional early‑career candidates will also be considered.

Responsibilities

• Simulate communication patterns of AI workloads across network topologies.
• Evaluate AI workloads and provide recommendations for system architecture.
• Collaborate with ASIC teams to influence chip design.
• Tool Development & Partnership: Interface with simulation tool providers (who have optimized versions of NS‑3, ASTRA‑sim, etc.) to customize, tune, and enhance modeling frameworks for Eridu’s specific requirements and to operate these tools to run simulations.
• Documentation & Communication: Create clear and compelling reports, documentation, and presentations to communicate insights to technical and non‑technical stakeholders.

Skills

Network simulation tools (NS3, OMNeT++)

AI/ML communications

C++ programming

Python programming

Communication skills

Education

MSc or PhD in Computer Science or related field

Tools

PyTorch

TensorFlow

CUDA

ROCm

TensorFlow

NCCL

RCCL

CUDA

ROCm

Job description

Eridu is a Silicon Valley-based hardware startup pioneering infrastructure solutions that accelerate AI data centers to deliver Faster AI . Today’s AI performance is frequently limited by communication bottlenecks. Eridu introduces multiple industry-first innovations across silicon, packaging, software, and systems to deliver an order of magnitude improvement in performance and unlock greater GPU utilization to speed training job completion times and tokens-per-second for more profitable inference. We do this while simultaneously reducing capital and power costs and improving reliability.

The company’s solutions and value proposition have been widely validated by leading hyperscalers.

Eridu has raised over $200M to date including its most recent, oversubscribed Series A round. The company is led by a veteran team of Silicon Valley executives who have delivered multiple billion dollar product lines and led multiple companies to billion dollar exits, including serial entrepreneur Drew Perkins, co-founder of Infinera (NASDAQ: INFN), Lightera (acq. by Ciena), Gainspeed (acq. by Nokia) and Mojo Vision (the world’s leading micro-LED company). The company is in execution mode and has a world-class engineering team with decades of experience in state-of-the‑art silicon, packaging, optics, software, and systems. Eridu is working with best‑in‑class supply chain partners including silicon, packaging and systems.

Visit our website eridu.ai to learn more.

Position Overview

We are seeking a highly motivated Network Simulation Engineer to lead the simulation and analysis of AI communication workloads (e.g. collective communications) across various data center network topologies. In this role, you will apply network simulation tools to model real‑world AI applications—including LLMs and DLRMs—to inform architectural decisions across Eridu’s product development lifecycle and to showcase our value to prospective customers and investors.

You will collaborate cross‑functionally with customers, ASIC designers, and simulation tool providers to optimize performance, influence design, and deliver transformative AI networking solutions.

Responsibilities

• Model AI Workloads: Simulate communication patterns of distributed AI workloads (e.g., LLMs, DLRMs) across diverse network topologies to analyze performance and scalability.
• Drive Architecture Optimization: Work with customers to evaluate their AI workloads and provide recommendations for topology design, protocol tuning, and system architecture.
• Influence ASIC Design: Collaborate with the internal ASIC and architecture teams by providing simulation‑based insights that shape chip design for optimized AI traffic flows.
• Tool Development & Partnership: Interface with simulation tool providers (who have optimized versions of NS‑3, ASTRA‑sim, etc.) to customize, tune, and enhance modeling frameworks for Eridu’s specific requirements and to operate these tools to run simulations.
• Documentation & Communication: Create clear and compelling reports, documentation, and presentations to communicate insights to technical and non‑technical stakeholders.

Qualifications

• MSc or PhD in Computer Science, Electrical Engineering, or a related field with some specialization in AI/ML communications or equivalent hands‑on experience
• Strong experience with network simulation tools such as NS3, OMNeT++, or custom‑built simulators.
• Familiarity with distributed training frameworks (e.g., PyTorch, TensorFlow), collective communication libraries (e.g., NCCL, RCCL), and GPU programming (CUDA or ROCm).
• Deep understanding of frontier model architectures, parallelism approaches and operational functionality
• Deep understanding of Ethernet, InfiniBand, and high‑performance data center networking technologies.
• Solid grasp of AI system architecture, including compute, memory, and interconnect bottlenecks in large‑scale training/inference clusters.
• Strong programming skills in C++ and Python.
• Clear and confident communication skills, both written and verbal.
• 2+ years of relevant experience preferred; exceptional early‑career candidates will also be considered.

Why Join Us?

At Eridu, you’ll have the opportunity to shape the future of AI infrastructure, working with a world‑class team on groundbreaking technology that pushes the boundaries of AI performance. Your contributions will directly impact the next generation of AI infrastructure solutions, transforming the performance of AI data centers.

The starting base salary for the selected candidate will be established based on their relevant skills, experience, qualifications, work location, market trends, and the compensation of employees in comparable roles.

Notice to Recruiting Agencies

Eridu does not accept unsolicited resumes or candidate profiles from staffing agencies or third‑party recruiters. Any candidate submitted to Eridu without prior written authorization from our recruiting team will be considered unsolicited and will become the property of Eridu. Eridu reserves the right to pursue and hire such candidates without any obligation to pay fees. Recruiting agencies are expressly instructed not to contact hiring managers, employees, or executives regarding open positions.