Sr. Network Engineer

Lambda Inc.

Job Overview

Location

San Francisco Office (Fremont St)

Job Type

Full-time

Full Job Description

📋 Description

• Design, deploy, and scale high-performance cloud networking infrastructure to support AI workloads across tens of thousands of customers.
• Configure and manage production-grade networking hardware for new and existing GPU clusters in data centers.
• Ensure 99.9%+ network availability through implementation of redundancy, failover mechanisms, and proactive monitoring.
• Automate network configuration management using Python, Ansible, and version control systems like Git to reduce manual intervention.
• Collaborate with internal teams and external customers to diagnose, troubleshoot, and resolve complex network-related issues in real time.
• Deploy and maintain network monitoring tools including Datadog, Prometheus, Grafana, Clickhouse, gNMI, and OpenTelemetry for real-time visibility.
• Participate in day-two operations and on-call rotation for the Network Engineering team to ensure rapid incident response.
• Implement and optimize CLOS/Spine-and-Leaf topologies with EVPN/VXLAN, ECMP, BGP, and fast-convergence protocols across multi-vendor environments.
• Manage Next-Generation Firewalls (e.g., Fortinet) to enforce security policies across cloud and on-premises network segments.
• Integrate cloud networking services from AWS, GCP, and OCI into Lambda’s hybrid infrastructure with consistent operational practices.
• Work with network hardware vendors including Arista, Juniper, Cisco, Cumulus/SONiC, and Opengear to validate, deploy, and support equipment.
• Apply deep Linux networking stack knowledge to troubleshoot kernel-level connectivity, routing, and performance issues.
• Contribute to the evolution of network architecture to support emerging AI workloads, including high-bandwidth, low-latency requirements.
• Document network designs, configurations, and operational procedures to ensure knowledge sharing and compliance.
• Partner with infrastructure and operations teams to align network topology with data center power, cooling, and space constraints.

🎯 Requirements

• 10+ years of experience in IT and networking
• 6+ years of experience designing and operating production data center networks
• Expertise in CLOS/Spine-and-Leaf fabrics, EVPN/VXLAN, ECMP, BGP, and fast-convergence techniques
• Production experience managing Next-Generation Firewalls (e.g., Fortigate)
• Hands-on experience with cloud networking (AWS, GCP, OCI)
• Proficiency in Linux command line and Linux networking stack internals
• Strong automation skills using Python and Ansible, with experience using Git or similar source control
• Production experience with multiple network hardware vendors (Arista, Juniper, Cisco, Cumulus/SONiC, Opengear)
• Experience with network monitoring stacks (Datadog, Prometheus, Grafana, Clickhouse, gNMI, OpenTelemetry)

🏖️ Benefits

• Generous cash & equity compensation
• Health, dental, and vision coverage for employee and dependents
• Wellness and commuter stipends for select roles
• 401k Plan with 2% company match (for USA employees)
• Flexible paid time off plan that is actively used by employees

Skills & Technologies

Python

AWS

GCP

Terraform

Git

Senior

Onsite

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Lambda Inc.

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About Lambda Inc.

Lambda Inc. provides cloud-based GPU clusters and workstations for artificial-intelligence research and development. The company designs and operates high-performance hardware infrastructure optimized for machine-learning workloads, offering on-demand access to NVIDIA GPUs, pre-configured deep-learning software stacks, and scalable storage. Customers include AI labs, universities, and enterprises training large language and computer-vision models. Founded in 2012, Lambda is headquartered in San Francisco and maintains data centers across North America and Europe.

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