Microsoft
Cloud Infrastructure & DevToolsDirect employer career site

Principal Optical Network System Engineer

Location
Mountain View | United States, CA · On-site
Job type
Full-time
Level
Director
Experience
8+ years
Education
Bachelor's degree
Listed
29 days ago

Skills & highlights for this role

  • fiber optics
  • optical interconnects
  • InfiniBand
  • Ethernet
  • Linux automation

Also useful

  • Co-Packaged Optics
  • silicon photonics
  • UALink
  • telemetry tooling

About the role

Collaborate with internal teams, ODMs, and technology partners to ensure successful qualification and production readiness. Develop automated qualification frameworks and methodologies to ensure robust operation in rack-scale and cluster-scale AI environments. Evaluate technology tradeoffs across performance, power, reliability, and scalability.

Develop telemetry, diagnostics, automation, and fleet monitoring solutions that improve network reliability, accelerate issue resolution, and enhance engineering productivity. Drive end-to-end architecture, integration, validation, and deployment of networking infrastructure for AI systems across scale-up and scale-out environments.

Partner with silicon, firmware, software, hardware, and Azure infrastructure teams to define networking requirements and deliver scalable, reliable, and high-performance AI fabrics. Lead bring-up, qualification, and optimization of network subsystems including switches, NICs, PHYs, optics, cables, and high-speed SerDes technologies.

Develop validation and performance methodologies for AI networking infrastructure, ensuring readiness across functionality, scale, reliability, and stress conditions. Drive root-cause analysis, telemetry, and automation solutions to improve network resiliency, operational efficiency, and fleet health.

Evaluate and influence next-generation networking technologies and architectures required to support future AI workloads and hyperscale deployments.

Master's Degree in Electrical Engineering, Computer Engineering, Mechanical Engineering, or related field AND 7+ years technical engineering experience OR Bachelor's Degree in Electrical Engineering, Computer Engineering, Mechanical Engineering, or related field AND 8+ years technical engineering experience OR equivalent experience.

8+ years of experience with fiber optics, including related tools, devices, processes, design, deployment, operations, or manufacturing. 8+ years of experience designing, testing, validating, or troubleshooting optical interconnects, optical components, or end-to-end fiber links.

These requirements include but are not limited to the following specialized security screenings: Networking and AI Infrastructure Experience with data center networking and AI infrastructure, including GPU fabrics, InfiniBand, Ethernet, or UALink ecosystems. Understanding of scale-up and scale-out network architectures and the optical connectivity requirements of large-scale distributed AI systems.

Experience in one or more areas such as high-speed copper or optical interconnects, high-speed optical transmission systems, Co-Packaged Optics (CPO), Near-Packaged Optics (NPO), silicon photonics, pluggable optics, advanced packaging, or rack-scale fiber management. Experience with optical engineering concepts, testing procedures, laboratory tools, analysis methods, or relevant industry standards.

Experience testing or validating active or passive fiber-optic components and end-to-end fiber links. Experience developing high-density fiber infrastructure, including fiber shuffle solutions, patch panels, connectors, cable assemblies, and rack-scale optical systems. Experience with hyperscale datacenter deployment, optical manufacturing processes, and ODM, contract manufacturer, and supplier ecosystems.

Experience managing optical or networking products through EVT, DVT, PVT, qualification, and production ramp. Experience with Linux environments and automation frameworks. Experience developing telemetry, diagnostics, validation, and qualification tooling.

Read the original posting

From Microsoft's careers page, first listed on Rolev.ai on October 11, 2026. Rolev.ai is not the employer.

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Common questions

Where is the Principal Optical Network System Engineer job at Microsoft located?

This Principal Optical Network System Engineer position at Microsoft is located in Mountain View | United States, CA (On-site). Always check Microsoft's application page for specific state eligibility or relocation policies.

What qualifications are required for Principal Optical Network System Engineer at Microsoft?

For the Principal Optical Network System Engineer role, Microsoft highlights 8+ years of relevant experience; a bachelor's degree; experience with fiber optics, optical interconnects, InfiniBand, Ethernet, Linux automation. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.

How do I apply for the Principal Optical Network System Engineer position at Microsoft?

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