Job Description

Cyber threats are a growing concern, impacting individuals and organizations worldwide. At Microsoft Security, we are committed to protecting users through intelligent, scalable, and resilient security solutions.
We are looking for a passionate and experienced Senior Software Engineer to join the Microsoft Defender for Office (MDO) team.
This role offers the opportunity to build and scale cloud-native security systems that protect millions of users from sophisticated threats like phishing, malware, and business email compromise.

Responsibilities

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Design and implement high-scale, low-latency backend services and data pipelines hosted in Azure to support MDO's threat detection and remediation workflows. Make architectural decisions that shape the future of MDO's security infrastructure and influence cross-team technical direction. Collaborate with PMs and partner teams to deliver end-to-end features that enhance threat protection capabilities. Lead investigations and resolution of live site issues, driving improvements in service reliability and incident response. Contribute to architectural discussions, code reviews, and engineering best practices across the team and broader MDO organization. Develop and refine internal tools and observability systems to improve diagnostics, telemetry, and operational efficiency. Mentor junior engineers and foster a culture of innovation, inclusion, and continuous learning.

Qualifications

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Bachelor's / Master's in computer science or related technical field AND 7+ years technical engineering experience with proficiency coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. Experience building distributed systems and working with cloud platforms Expertise in HD Insight Spark, data processing is strong plus. Demonstrated ability to work independently and collaboratively in a fast-paced, agile environment. Strong debugging and problem-solving skills, especially in live site and production scenarios. Experience with DevOps practices, CI/CD pipelines, and observability platforms (e.g., Kusto, Application Insights). Exposure to Big Data technologies and AI/ML-driven systems is advantageous.

Other Requirements

-Bachelor's / Master's in computer science or related technical field



Microsoft is an equal opportunity employer. Consistent with applicable law, all qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.