# Network Engineer

**Company:** [Cerebras Systems](https://hotfix.jobs/companies/cerebras-systems)
**Location:** Sunnyvale, CA
**Role:** DevOps / SRE
**Experience:** 5+ years
**Skills:** Python, Go, Juniper, Arista, Cisco, Sonic, Vxlan, Evpn, Rocev2, BGP, Dcqcn, Pfc, Ecn, Gnmi, Ansible
**Posted:** 2026-06-03

> Design and operate large-scale AI/HPC cluster network fabrics. Architect front-end datacenter interconnects, build automation and observability tooling, and debug complex distributed networking issues.

## Job Description

## What You'll Do
- Design and architect front-end network fabrics for AI/ML and HPC clusters, optimizing for high resource utilization, low latency, and high-throughput communication.
- Build proof-of-concept implementations of new network designs and features, and drive them from prototype through production rollout.
- Identify and resolve performance and efficiency bottlenecks across the host-NIC-fabric.
- Automate the deployment, configuration, and validation of network infrastructure using Python, including topology provisioning, fabric bring-up, config generation, and regression.
- Stand up and operate SRE-grade telemetry and observability for the cluster network: streaming telemetry (gNMI, OpenConfig, sFlow/IPFIX), metrics pipelines, alerting, and incident workflows.
- Define the SLIs/SLOs that govern network reliability and drive blameless post-incident analysis.
- Lead network debugging in large distributed-systems environments spanning multiple platforms and protocols, including deep dives into RoCEv2, PFC/DCQCN, ECMP hashing, congestion behavior, and packet-level forensics.
- Lead cross-functional, multi-phase technical projects spanning hardware, firmware, host networking, and cluster software.
- Collaborate with vendors and industry partners to shape network hardware and feature roadmaps.
- Represent the company in industry forums, standards bodies, and technical communities.
- Serve as the central point of contact for network reliability issues across the cluster.

## Skills & Qualifications
- Ph.D. in Computer Science or Electrical Engineering with 5+ years of industry experience, or Master's in CS/EE with 10+ years of industry experience.
- Solid experience in designing large-scale networks in datacenter and cloud environments.
- Extensive hands-on experience debugging networking issues in large distributed systems with multiple platforms and protocols.
- Demonstrated track record leading multi-phase, multi-team technical projects to completion.

## Technical Skills
- Deep expertise across networking platforms: Juniper, Arista, Cisco, and open-box / disaggregated NOS architectures (SONiC).
- Strong working knowledge of networking protocols and fabric technologies: VXLAN, EVPN, RoCEv2, BGP, DCQCN, PFC, ECN, and streaming telemetry.
- Programming and automation: proficiency in Python (and/or Go) for building network automation, validation, and tooling. Comfort with config generation frameworks (Ansible, Jinja2), gNMI, and CI/CD pipelines for network infrastructure.
- SRE and observability: hands-on experience with streaming telemetry pipelines, time-series databases (Prometheus, InfluxDB), visualization (Grafana), log aggregation, and modern incident-management.
- Ability to define SLIs/SLOs and instrument the network for proactive reliability.
- Familiarity with network visibility, management, and packet-capture/analysis tools.

## Strongly Preferred
- Prior experience at hyperscalers or cloud service providers.
- Experience with AI/ML or HPC cluster networking, including lossless Ethernet design, rail-optimized topologies, and collective-communication traffic patterns.
- Track record of contributions to open-source networking projects, standards bodies, or industry conferences.

## Similar roles

- [Software Engineer, Platform & Infrastructure](https://hotfix.jobs/jobs/2a4d6818-4e00-4a08-8339-aba841ed1ada) - Forus - New York, NY
- [Software Engineer, Developer Productivity](https://hotfix.jobs/jobs/3d3eb78d-cb73-4b62-bef0-6c84085fdf5a) - Forus - New York, NY
- [Site Reliability Engineer](https://hotfix.jobs/jobs/8def48bc-b809-4397-bd55-28b9747c1f82) - Runloop - San Francisco, CA
- [Build & Release Engineer](https://hotfix.jobs/jobs/c41c87c5-6007-46e9-8648-635789c39b4a) - Applied Intuition - Sunnyvale, CA - $118k – $200k/yr
- [Software Engineer, Async Platform](https://hotfix.jobs/jobs/f1db6fa3-5b80-4939-86b0-39e6f0db0694) - Lyft - Seattle, WA - $118k – $147k/yr

**Apply:** https://hotfix.jobs/jobs/2dd5fe8b-61e5-4dd7-9d0c-ad56a4085e11
**Canonical:** https://hotfix.jobs/jobs/2dd5fe8b-61e5-4dd7-9d0c-ad56a4085e11