Data Scientist Ii
Posted on Aug. 29, 2025 by Microsoft
- Dublin, Ireland
- N/A
- Full Time

The Microsoft Identity security team is on a mission to protect our customers from account compromise and fraud. Our data science team is at the core of this mission, creating and improving the machine learning based detections that are used to find and block the malicious actors from harming our systems and customers. We are looking for a talented data scientist who is passionate about big data, machine learning and identity security detections. Your job will entail diving through mountains of data and extracting insights to help us understand the ever-changing environment of security attacks. Take a blank canvas made of terabytes of information and create smart algorithms that can detect and stop the attackers while maximizing the good users’ productivity and usability. 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. 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.
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.
#MSFTSecurity, #IDNADublin
Responsibilities
- Create and maintain machine learning based detections to detect compromise of Microsoft Identity users or services.
- Analyze new data sources and research new patterns and techniques that can be used in an automated detection.
- Collaborate with software engineers and PMs to see your detections productized end-to-end.
- Set up and track metrics to assess the quality of our detections, so we can improve and adapt in real time.
- Leverage data gathered by the different teams and services to build new detection algorithms.
- Help the team achieve its mission by participating in incident resolution and investigations on identity attacks.
Qualifications
- Strong experience in solving problems through statistical modeling, applied ML, and data analysis.
Preferred:
- Proficient in data analytics languages (SQL, R or Python) and some programming experience (C#, C++, Java)
- Strong communication skills with other data scientists and with partners from other domain
- MS/PhD in computer science, machine learning, statistics, or quantitative domain.
- Previous experience in any of the following: identity systems, security, threat intelligence, fraud, or abuse.
Other Requirements:
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.
Advertised until:
Sept. 28, 2025
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