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Job Details
Posted date: Jan 14, 2026
There have been 229 jobs posted with the title of Principal Applied Scientist all time at Microsoft.There have been 229 Principal Applied Scientist jobs posted in the last month.
Category: Applied Sciences
Location: Mountain View, CA
Estimated salary: $222,050
Range: $139,900 - $304,200
Employment type: Full-Time
Work location type: 4 days / week in-office
Role: Individual Contributor
Description
OverviewViva Engage connects people through communities, bringing leaders and employees together to share knowledge, clarify priorities, build culture and relationships. Viva Engage (formerly Yammer) is the premier tool to create multi-directional dialogue between tens of millions of employees worldwide every month.
Engage team members are at the forefront of driving AI applications and copilot adoption to make communication and information sharing easy and authentic. Our work supports top challenges for our customers, spreading shared knowledge, including digital safety, trusted security standards, and deep analytics to help our customers maximize reach, reduce inefficiencies, and create a thriving organizational culture. We would love to have you join the team driving innovation, connection, and community for our valued global customers. #VivaEngage 
About this Job
As a Principal Applied Scientist at Viva Engage, your role is to build Agentic applications across our product, predictive models that connect individuals with each other and knowledge across organizations. Our focus lies in discovery, recommendations, relevance and grounding for features across Viva Engage, leveraging data from our platform and across Office 365.
What makes this role special?
This role presents an opportunity to create a vision around the Viva Engage Agentic Applications, the underlying platform and help us make it a reality. Our tight-knit, high-performing team, coupled with the unique challenges posed by social enterprise analytics, will offer plenty of opportunities for impact.
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
Design, build, and ship machine learning and LLM-driven capabilities that directly power AI features in Viva Engage, with clear product KPIs (e.g., activation, retention, engagement, moderation quality, time saved).Own end-to-end delivery of applied science solutions: problem framing → data/labels → modeling/prompting → evaluation → experimentation (A/B tests) → deployment → monitoring → iteration.Develop and operationalize AI agents for knowledge discovery, moderation, communities, and events—focused on measurable user value, automation, and high-quality recommendations.Work with large, complex datasets to solve ambiguous, non-routine product problems using advanced statistical and ML methods, prioritizing approaches that are production-viable.Utilize Large Language Models (LLMs) for advanced text analysis and natural language understanding tasks, enabling deeper connections and knowledge sharing across organizations.Leverage generative AI techniques to enhance data augmentation and predictive capabilities, further improving recommendations and personalized user experiences.Develop deep product intuition to influence future product roadmaps and drive decision-making by making pragmatic tradeoffcs between model quality, engineering complexity, and time-to-value.Collaborate with product and engineering to craft experiments and test hypotheses.Communicate clearly across disciplines: translate complex technical decisions into product implications, risks, and expected outcomes.Operate effectively in complex, cross-team environments and drive alignment through technical leadership and execution.Hands On Expectations:
This is a hands-on applied science engineering role: you will write production-quality code, prototype quickly, and implement your own solutions (not just analyses, papers, or slide decks).You will contribute directly in areas such as Python/TypeScript/Java services or pipelines, Prompt/Agent orchestration, Evaluation harnesses, Experimentation instrumentation, and model/agent monitoring.Success is defined by shipped features and measurable product impact.In this role/team you will have:
Autonomy and freedom to innovate—paired with accountability to deliver customer-facing outcomes collaborating with PM/Eng/UX as necessary.The ability to choose from best-in-class open source and Microsoft technology to ship reliably at scale.A strong experimentation culture: offline eval + online A/B testing to make data-driven decisions.An opportunity for outsized impact as part of a small but mighty team on a rapidly growing product needed now more than ever.
Qualifications
Required Qualifications:
Bachelor's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (e.g., statistics, predictive analytics, research)OR Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 4+ years related experience (e.g., statistics, predictive analytics, research) OR Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 3+ years related experience (e.g., statistics, predictive analytics, research)OR equivalent experience. 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 Cloud background check upon hire/transfer and every two years thereafter.
Preferred Qualifications:Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 9+ years related experience (e.g., statistics, predictive analytics, research)OR Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 6+ years related experience (e.g., statistics, predictive analytics, research)OR equivalent experience.5+ years experience creating publications (e.g., patents, libraries, peer-reviewed academic papers).2+ years experience presenting at conferences or other events in the outside research/industry community as an invited speaker.5+ years experience conducting research as part of a research program (in academic or industry settings).3+ years experience developing and deploying live production systems, as part of a product team.3+ years experience developing and deploying products or systems at multiple points in the product cycle from ideation to shipping.
#vivaengage
Applied Sciences IC5 - The typical base pay range for this role across the U.S. is USD $139,900 - $274,800 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 $188,000 - $304,200 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
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.
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 with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.
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