Job Description

Principal Software Engineer

===============================


Hyderabad, Telangana, India



Date posted

Oct 22, 2025

Job number

1900272

Work site

4 days / week in-office

Travel

0-25

%

Role type

Individual Contributor

Profession

Software Engineering

Discipline

Software Engineering

Employment type

Full-Time

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 forArchitecting 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.

Benefits/perks listed below may vary depending on the nature of your employment with Microsoft and the country where you work.
?Industry leading healthcare
?Educational resources
?Discounts on products and services
?Savings and investments
?Maternity and paternity leave
?Generous time away
?Giving programs
?Opportunities to network and connect
Microsoft is an equal opportunity employer. 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.