Staff Machine Learning Scientist/Engineer
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The Microsoft 365 Copilot Reasoning Science team is looking for a Principal Applied Scientist to help shape the future of enterprise productivity by building reliable, long-horizon agentic capabilities for M365 Copilot Chat. In this role, you’ll advance the state of the art in frontier-model harness engineering and evaluation, tackling the challenges required for AI agents to reliably plan, reason, and execute complex, multi-step tasks on behalf of millions of users.
The ideal candidate is a self-starter who thrives in a fast-paced, high-visibility environment, and is passionate about being data-driven, iteration speed, scale, and engineering culture. You will be presented with opportunities to have great impact, work with frontier models, and collaborate closely with teams across the company, including Microsoft Research, Azure, and MAI.
The team is part of CACore (Copilot and Agents Core Platform), an organization that brings together talent in the areas of LLMs (Large Language Models), recommender systems, machine learning, information retrieval, agentic engineering, and responsible AI. This role is flexible in that you will be able to partner with your manager to define the way that you’d like to work, whether in the office or from home.
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.
Defining and managing experiments from inception to shipment, creating the requisite metrics, ML pipelines, algorithms. Owning problems end-to-end and being willing to pick up whatever knowledge you’re missing to get the job done.
Defining rigorous evaluation methodologies, offline benchmarks, online experimentation frameworks and data-driven approaches for measuring model and product performance.
Influencing senior leadership and partner teams through quality written and oral summaries of work in progress and experimentation results.
Building tools to accelerate your own (and your teammates’) workflows, but only when off-the-shelf solutions won’t do.
Contributing to strategic planning and long-term technical roadmaps, incorporating latest research to meet business goals.
Contributing to the growth and development of the team’s engineers and applied scientists. Identifying new research talent to join Microsoft and collaborating with the academic community to develop the recruiting pipeline.
Supporting and developing a thriving applied science culture within CASQ to encourage experimentation, scientific process, and innovation.
Required Qualifications:
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:
Applied Sciences IC5 - The typical base pay range for this role across the U.S. is USD $142,800 - $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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Microsoft builds Windows, Azure, Office and the Copilot family of AI assistants, and operates one of the largest AI training and inference fleets in the world. Microsoft Research and the AI platform teams work across foundation models, systems for large-scale training, and applied ML in every product line.
Founded in 1975 and headquartered in Redmond, Washington, the company is also OpenAI's principal compute partner and ships AI tooling for developers through GitHub, VS Code and Azure AI.
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