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Principal Software Engineer

Microsoft

$139,900 - $304,200
Sep 24, 2025
Remote, US
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Microsoft Azure is building the fastest network in public cloud and is seeking candidates to build network systems and services, taking things from idea to production. The Azure Host Networking team creates the host platform that allows SDN controllers to perform arbitrary packet manipulations and virtualization at very high speeds.

Requirements

  • 4+ years of experince in System Design and development skills, and performance optimization.
  • Linux/Windows kernel and/or DPDK development experience
  • Systems programming experience
  • Kernel or driver development experience.
  • coding in languages including, but not limited to, C or C++

Responsibilities

  • Responsible for building, testing and deploying networking acceleration on Azure including Single Root IO Virtualization (SRIOV), Data Plane Development Kit (DPDK) for network appliances, Linux network acceleration, Remote Direct Memory Access (RDMA), containers, etc.
  • We build the Azure Virtual Switch where the action happens in software, and own the underlying hardware platform on the host that enables us to scale SDN as the network moves from 40Gbps to 100Gbps, 200 Gbps and beyond!
  • The datapath team created all the host network virtualization capabilities, as well as the high speed RDMA platform that scaled Azure Storage.
  • We also build in other larger scale cloud SDN scenarios for performance, security and reliability, many of which are used by large scale workload like online commerce, AI, big data, etc.
  • Proactively seeks new knowledge and adapts to new trends, technical solutions, and patterns that will improve the availability, reliability, efficiency, observability, and performance of products while also driving consistency in monitoring and operations at scale and shares knowledge with other engineers.
  • Holds accountability as a Designated Responsible Individual (DRI), mentoring engineers across products/solutions, working on-call to monitor system/product/service for degradation, downtime, or interruptions.
  • Leads identification of dependencies and the development of design documents for a product, application, service, or platform.

Other

  • 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.
  • Ability to work with multiple partner teams and external vendors to drive impact.
  • Mentors others to produce extensible and maintainable code used across products.
  • You should be able to drive projects with other teams in Microsoft, our hardware partners and various Linux distros.