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Principal Optical Network Engineer - Azure Fiber & AI

Microsoft

Salary not specified
Oct 1, 2025
Redmond, WA, USA
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Microsoft Azure Fiber & AI is experiencing exponential growth fueled by ongoing Cloud & AI success and emerging unprecedented demands. The team needs to design, build, and operate a Global Optical Network to support seamless interaction with Azure and services like ChatGPT, while also preparing for future demands with revolutionary optical technologies.

Requirements

  • 1+ years experience managing large scale optical transport systems and provisioning, troubleshooting, and maintaining long-haul and metro optical networks.
  • 1+ years experience with optical performance management tools, and optical transmission technologies including DWDM, CWDM, ROADM, and OTN.
  • Ability to interpret OTDR/eye-diagram/constellation traces and apply advanced troubleshooting for signal integrity and optical impairments.
  • 1+ years experience in fiber optical network design, development, capacity planning, operations and automation with background in fiber optical networks
  • Over 1 year of experience in IM-DD optical technologies, including PAM4 and NRZ signaling for high-speed data center interconnects; hands-on with transceiver characterization using BERTs, oscilloscopes, and spectrum analyzers.
  • Proficient understanding of optical performance metrics such as TDECQ, OMA, SRS, ER, and RIN, as well as optical link budgets, dispersion, and crosstalk in short- and long-reach deployments.
  • Familiar with IEEE 802.3 Ethernet optics standards (e.g., 400G/800G DR4, FR4, LR4, SR4), OIF, ITU-T, IEC standards, and compliance testing protocols like Telcordia GR-468 and GR-63.

Responsibilities

  • Lead the development and implementation of components and systems from design through deployment, operations, and automation
  • Contribute to the innovation of transformative technologies such as, SiPho, CPO, and HCF optics for AI
  • Spearhead the development and integration of advanced AI-empowered network management, quality monitoring and improvement software, guaranteeing the highest quality of fiber & optical assets
  • Optical Network Design for AI Systems: Collaborate with key stakeholders to ascertain customer requirements specific to optical networking for AI systems.
  • Lead the design and development of specialized optical network components, focusing on optical direct-detection and coherent technologies, to meet both customer and technical requirements.
  • Performs testing and validation of network devices, firmware, and configurations; defines and implements test cases with automation tools and exposes test coverage gaps.
  • Optical Systems Testing and Validation: Conduct rigorous testing and validation of optical grey and WDM transceivers, transponders and line systems.

Other

  • Doctorate Degree in Electrical Engineering, Optical Engineering, Computer Science, Information Technology, or related field AND 3+ years technical experience in network design, development, and automation
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role.
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud Background Check upon hire/transfer and every two years thereafter.
  • Skilled in cross-functional collaboration across hardware, signal integrity, and system architecture teams, with a problem-solving mindset and attention to reliability and qualification testing.
  • Acts as a Designated Responsible Individual (DRI) and guides other engineers by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate.