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Security represents the most critical priorities for our customers in a world awash in digital threats, regulatory scrutiny, and estate complexity. Microsoft Security aspires to make the world a safer place for all. We want to reshape security and empower every user, customer, and developer with a security cloud that protects them with end to end, simplified solutions. The Microsoft Security organization accelerates Microsoft’s mission and bold ambitions to ensure that our company and industry is securing digital technology platforms, devices, and clouds in our customers’ heterogeneous environments, as well as ensuring the security of our own internal estate.

We are looking for a highly driven and motivated **Senior Software Engineer** to design and build the next generation of endpoint protection using AI, optimizing for the latest silicon innovations and Windows OS enhancements. This includes championing fundamentals such as performance, scaling to platforms big and small, and driving foundational changes throughout the entire Defender stack.

We are seeking an experienced engineer with a deep understanding of the Windows operating system.

This role offers opportunities to develop architectural solutions from the ground up, focusing on fundamentals such as performance, reliability, and extensibility.

Become an integral member of the Microsoft Defender for Endpoint (MDE) team, dedicated to protecting consumers and enterprises alike from cyber-attacks. Our mission is to safeguard every user with innovative proactive protection, detection, and response technologies, aiming to stay ahead of malicious actors and anticipating the threats of the future.

This position provides the potential for tremendous personal and career growth across many dimensions. You’ll have the opportunity to work across divisional boundaries and develop a broad understanding of Microsoft’s business while making a meaningful impact on society.

Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.

Responsibilities

**Responsibilities:** –

+ Partner with multiple teams across Microsoft, architecting and implementing solutions deeply integrated into the Defender stack

+ Drive proof-of-concept projects to enable innovative solutions using AI

+ Write high-quality, maintainable code, and review contributions from other engineers

+ Analyze and optimize performance and reliability of the defender stack

+ Mentor other engineers, providing guidance and oversight on complex projects

+ Embody our culture and values

Qualifications

Required Qualifications:

+ Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience

+ 3+ years experience developing software for Windows or Linux OS internals, including kernel-level components and system services

+ 3+ years of cloud service experience including, but not limited to Azure, GCP, and AWS 3+ years familiarity with cloud platforms such as Azure, AWS, or GCP.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include, but are not limited to the following specialized security screenings:

Microsoft Cloud Background Check:

This position will be required to pass the Microsoft background and Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Requirements

+ Master'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 Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

+ OR equivalent experience.

+ 3+ years of experience building software systems, with a focus on large-scale, distributed platforms.

+ 3+ years experience working with high-scale, mission-critical SaaS products, including service operations.

+ Proven ability to guide and mentor engineers, leading their projects to completion.

+ Knowledge of data processing frameworks such as Spark, Hadoop, or similar technologies.

+ Experience with security data management, logging, or monitoring solutions.

+ 1+ years experience applying AI models or agentic flows in production systems.

Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $158,400 - $258,000 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay

Microsoft will accept applications and processes offers for these roles until October 10, 2025.

\#MSFTSecurity, #RepMAP, #MicrosoftFraudPrevention

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 (https://careers.microsoft.com/v2/global/en/accessibility.html) .