Principal Software Engineer
Microsoft
2 - 5 years
Hyderabad
Posted: 15/11/2025
Job Description
Overview
Microsoft Defender for Office (MDO) team, we are responsible for delivering a cloud-based email and message filtering service that protects customers from advanced threats (malware, phish, fraud and spam) in Microsoft’s collaboration workloads (Mail, Teams, Sharepoint, OneDrive).
In Microsoft Defender for Office (MDO) team, we are responsible for delivering a cloud-based email and message filtering service that protects customers from advanced threats (malware, phish, fraud and spam) in Microsoft’s collaboration workloads (Mail, Teams, Sharepoint, OneDrive). MDO provides investigation, threat hunting and remediation capabilities that allow security teams to efficiently identify, prioritize, investigate, and respond to threats. Our mission is to stay ahead of attackers by continuously evolving our detection and prevention capabilities using advanced machine learning, heuristics, and big data analytics.
Qualifications
- Required: Bachelor’s or Master’s Degree in Computer Science or related technical field, with 7+ years of hands-on engineering experience and a proven track record of delivering large-scale, high-impact solutions. Deep expertise in distributed systems, security platforms, and coding in languages such as C, C++, C#, Java, JavaScript, or Python.
- Experience in organizational and technical leadership, architecting cloud services, and driving product innovation.
Preferred qualifications:
- Proficiency in Azure Cloud PaaS, big data analytics, and modern security protocols.
Responsibilities
As a Principal Software Engineer in our team , You will be responsible for
- Architecting and delivering email blocking system based on domain reputation which will involve building models to analyze and evaluate the domains that send malware, phishing email.
- Architecting and building solutions to analyze bulk email pattern and isolate the emails harmful to customers.
- Champion the product roadmap , collaborating with cross functional teams to integrate cutting edge threat detecting models and capabilities.
- Mentor the team of brilliant engineers to design and implement with best engineering practices.
About Company
Microsoft Corporation is a leading American multinational technology company founded in 1975 by Bill Gates and Paul Allen. Headquartered in Redmond, Washington, Microsoft is best known for its software products, including the Windows operating system, Microsoft Office Suite, and Azure cloud services. The company also produces hardware like the Surface devices and owns LinkedIn, GitHub, and the Xbox gaming brand. Microsoft is one of the world's most valuable companies, playing a key role in personal computing, enterprise software, AI, and cloud computing.
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