Principal Software Engineer

Principal Software Engineer - C++

Microsoft Corporation

Location:
India , Hyderabad

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

We are part of the Windows Servicing and Delivery (WSD) organization in the Windows + Devices (W+D) division. Our mission is to keep customers protected and productive by delivering a seamless and timely servicing experience across supported and future versions of Windows. The Customer Focused Engineering (CFE) team within WSD is seeking highly motivated Principal Software Engineers to support this mission. In this role, you will work on Networking components, focusing on maintaining, securing, and improving existing platform capabilities.

Job Responsibility:

Provide technical leadership for complex networking components across Windows Client and Windows Server (e.g., TCP/IP stack, DNS, DHCP, VPN, NDIS, filtering platforms, or distributed networking services)
Drive architecture, design reviews, and invariant-based engineering to ensure security, reliability, and performance at global scale
Lead the design and implementation of high-impact features, security fixes, and platform hardening, including variant enumeration and regression prevention
Own end-to-end engineering quality—from design and code to validation, deployment, and long-term maintainability
Partner closely with security teams, Azure, and Redmond counterparts to align on roadmap, risk mitigation, and cross-platform dependencies
Diagnose and resolve complex customer issues and live-site incidents, balancing short-term mitigations with long-term fixes
Mentor senior engineers and raise the technical bar through code reviews, design discussions, and engineering best practices
Influence engineering processes, tooling, and testing strategies to improve efficiency, correctness, and confidence at scale

Requirements:

Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience
Strong expertise in networking fundamentals and protocols, such as TCP/IP, UDP, DNS, DHCP, routing, VPNs, or network security
Proven experience designing and debugging low-level, performance-critical, and concurrent systems
Demonstrated ability to lead technical design discussions and influence architecture across teams
Experience with security engineering, including threat modeling, invariants, and regression risk analysis
Strong problem-solving skills and the ability to reason about ambiguous, high-impact technical challenges

Nice to have:

Prior ownership of customer-facing or platform-critical components used at large scale
Familiarity with cloud-connected or hybrid networking scenarios
Experience driving quality through advanced testing, fuzzing, fault injection, or validation frameworks
Ability to collaborate across geographies and influence without direct authority

Additional Information:

Job Posted:
March 01, 2026

Employment Type:

Fulltime

Work Type:

On-site work

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