Microsoft Careers Stage

Senior Applied Scientists And Principal Applied Scientists (multiple positions)

2025-12-03

United States, California, Mountain View +1 more

3 days / week in-office

Overview <div>Microsoft is on a mission to reinvent productivity with AI, and the Copilot for Calendar initiative is at the forefront of this effort. We are seeking a Senior Applied Scientists and Principal Applied Scientists (multiple positions) to lead the development of AI-powered calendar experiences that help users organize and manage time more effectively. In this role, you will:</div><ul><li>Keep abreast of the latest breakthroughs in generative AI and large-language models and translate them into practical, high-impact calendar Copilot solutions that leverage M365 graph to deliver personalized, context-aware solutions for time management.</li><li>Define and iterate on relevance metrics that measure how Copilot features truly serve user intent in M365 Calendar.</li><li>Determine where fine-tuned LLMs (large language models), small language models, or other specialized approaches are required—and own their design, training, and deployment.</li><li>Build high-fidelity synthetic and manufactured datasets, along with rigorous evaluation sets and benchmarks that mirror the workflows of enterprise information-workers.</li><li>Drive the applied-science strategy for industry-leading calendar agents, partnering closely with engineering and product teams to ship at scale.</li><li>Build a clear, inspiring vision that aligns every team member around ambitious, measurable goals.</li><li>Recruit and nurture diverse talent, fostering a culture of ownership, psychological safety, and relentless learning.</li><li>Empower the team with resources and trust, then remove obstacles so they can execute rapidly and deliver outsized, sustainable impact.</li></ul><div>You will drive innovation in Copilot solutions for the calendar ecosystem and build intelligent AI forward calendar features (e.g. smart scheduling and conflict resolution, meeting prep, protecting and reclaiming your time, planning your day / week etc.). If you thrive at the intersection of cutting-edge AI research, real-world product impact across 100s of millions of users and love building a hard-working team that chases impact while having fun along the way, we’d love to meet you.</div><div> </div><div>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.</div> Responsibilities <div><div id="tor__fcust_extintJobResponsibilities_readOnlyDiv"><div id="tor__fcust_extintJobResponsibilities_content"><ul style="list-style-type: disc;"><li>Innovation with LLMs: Stay at the cutting edge of NLP (natural language processing) and large language models. Apply techniques such as prompt engineering, fine-tuning, and retrieval-augmented generation (RAG) to enhance Copilot’s capabilities. You will explore new model architectures and external knowledge integration to push the boundaries of what Copilot can do in the calendar domain.</li><li>Lead AI Feature Development: Lead the design and development of advanced ML/NLP models to power Copilot features in Outlook Calendar and Microsoft Teams. Leverage large language models and diverse data (emails, meetings, documents, chat transcripts etc) to create intelligent solutions for time management.</li><li>Modeling & Personalization: Architect and refine machine learning models (supervised and unsupervised) that optimize the relevance and personalization of calendar features.</li><li>Experimentation & Evaluation: Continuously iterate on models using real user feedback and telemetry, ensuring each new version of the Copilot delivers higher precision, recall and better user satisfaction.</li><li>Product Integration: Work closely with engineering and product teams to integrate your AI models into Calendar. Ensure solutions are production-ready – meeting standards for scalability, security, compliance, and real-time performance in a cloud environment. You will translate broad product needs into robust AI services that operate reliably at Microsoft scale (millions of users).</li><li>Technical Leadership & Mentorship: Provide technical leadership within the team and across partner groups. Mentor applied scientists and machine learning engineers, fostering best practices in research, experimentation, and coding. Guide technical initiatives and ensure scientific rigor in how the team builds and evaluates AI solutions. Champion a culture of collaboration, learning, and rapid innovation to continuously improve our AI-powered productivity features.</li><li>Team Building: Set a bold, customer-centric mission that galvanizes the team and clarifies priorities. Assemble complementary skill sets, cultivate candid collaboration, celebrate innovation, clear roadblocks, amplify wins, and hold a high bar for accountability—turning collective momentum into outsized, repeatable results.</li><li>Provide expertise in building and scaling relevance and ranking systems, including experience with retrieval, embeddings, and evaluation methodologies tailored to LLM-powered applications.</li><li>Demonstrate leadership in developing AI/ML solutions for productivity or assistant-like experiences, with a strong track record of managing cross-functional collaborations and driving measurable impact through data-driven product iteration.</li></ul>Embody our <a title="https://nam06.safelinks.protection.outlook.com/?url=https%3a%2f%2fcareers.microsoft.com%2fus%2fen%2fculture&data=04%7c01%7closmit%40microsoft.com%7c27f2181d96804234953708d8f3b22d06%7c72f988bf86f141af91ab2d7cd011db47%7c1%7c0%7c637527293867872556%7cunknown%7ctwfpbgzsb3d8eyjwijoimc4wljawmdailcjqijoiv2lumziilcjbtii6ik1hawwilcjxvci6mn0%3d%7c1000&sdata=qnmeu%2bvawapm5eeul1fxwpmhizgkndlfj6dlutowrb0%3d&reserved=0" href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcareers.microsoft.com%2Fus%2Fen%2Fculture&data=04%7C01%7Closmit%40microsoft.com%7C27f2181d96804234953708d8f3b22d06%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637527293867872556%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=QnmEU%2BvawaPM5eEUL1FxWPmhizgKnDLFj6dlUTOWRB0%3D&reserved=0" target="_blank" rel="noopener">culture</a> and <a title="https://nam06.safelinks.protection.outlook.com/?url=https%3a%2f%2fwww.microsoft.com%2fen-us%2fabout%2fcorporate-values&data=04%7c01%7closmit%40microsoft.com%7c27f2181d96804234953708d8f3b22d06%7c72f988bf86f141af91ab2d7cd011db47%7c1%7c0%7c637527293867882502%7cunknown%7ctwfpbgzsb3d8eyjwijoimc4wljawmdailcjqijoiv2lumziilcjbtii6ik1hawwilcjxvci6mn0%3d%7c1000&sdata=p3lkwaixzh3t9t1hs9bofkhtdfwpj6gi8zzu94lwrso%3d&reserved=0" href="https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.microsoft.com%2Fen-us%2Fabout%2Fcorporate-values&data=04%7C01%7Closmit%40microsoft.com%7C27f2181d96804234953708d8f3b22d06%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637527293867882502%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=p3lkWaIXzH3t9t1hS9bOfKhtDFWPj6gi8zZU94LWRso%3D&reserved=0" target="_blank" rel="noopener">values.</a><label id="label_tor__fcust_extintJobRequirements"></label></div></div></div> Qualifications <div>Required Qualifications:</div><ul><li>Bachelor'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)<ul><li>OR Master's Degree in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 3+ years related experience (e.g., statistics, predictive analytics, research)</li><li>OR Doctorate in Statistics, Econometrics, Computer Science, Electrical or Computer Engineering, or related field AND 1+ year(s) related experience (e.g., statistics, predictive analytics, research)</li><li>OR equivalent experience. </li></ul></li></ul>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:<ul><li>Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.</li></ul>Preferred Qualifications: <ul><li>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)<ul><li>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)</li><li>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)</li><li>OR equivalent experience. </li></ul></li><li>1+ year(s) experience creating publications (e.g., patents, peer-reviewed academic papers).</li><li>Experience developing and deploying large language models (LLMs), including agentic systems, supervised fine-tuning, and Reinforcement Learning (RLHF).</li><li>Experience designing, implementing, and optimizing Retrieval-Augmented Generation (RAG) pipelines and advanced context engineering.</li><li>Experience with modern LLM evaluation techniques, including LLM-as-a-Judge, agentic evaluations, and RAG assessments.</li><li>Experience with MLOps practices, including model versioning, automated testing, monitoring, and CI/CD for machine learning.</li><li>Experience with a top-tier scientific venues (e.g., NeurIPS, ICML, ICLR, ACL, EMNLP, KDD).</li><li>Ability to translate complex ML concepts into business value and communicate technical insights to non-technical stakeholders.</li></ul>#AppliedScience #T+P #GXP Applied Sciences 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: <a href='https://careers.microsoft.com/us/en/us-corporate-pay'>https://careers.microsoft.com/us/en/us-corporate-pay</a> 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: <a href='https://careers.microsoft.com/us/en/us-corporate-pay'>https://careers.microsoft.com/us/en/us-corporate-pay</a> This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. <hr> 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 <a href="https://careers.microsoft.com/v2/global/en/accessibility.html">requesting accommodations.</a>

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Senior Software Engineering

2025-12-04

United States, California, Mountain View +1 more

3 days / week in-office

Overview The Artificial Intelligence (AI) Frameworks team at Microsoft develops the AI software used to train and deploy the world’s most advanced AI models. We collaborate with our hardware teams and partners to build the software stacks for Microsoft’s next-generation supercomputers and the Maia AI accelerators.  We work closely with ML researchers and developers to optimize and scale out model training and inference.  We work with OpenAI on the models hosted on the Azure OpenAI service. The team operates at the intersection of AI algorithmic innovation, purpose-built AI hardware, systems, and software. We are a cross-discipline team of highly capable and motivated people with a collaborative and inclusive culture and with a shared mission of supporting and driving our AI future.As a member of this team, you will have the opportunity to work on developing and evaluating core algorithmic and hardware technologies to enable large scale inferencing and training of the most advanced AI models on novel AI hardware.   This is a technical role: it requires hands-on software design and development skills. We’re looking for someone who is passionate about solving hard technical problems and is motivated to learn new areas and tackle the hardest problems in building efficient AI systems. Responsibilities <ul><li>Develop technologies and build software tools to support validation, exploration, and productionization of LLM optimization technologies.</li><li>Perform software development in model scripting and/or kernel languages, such as Python, C/C++, CUDA.</li><li>Identify requirements, scope solutions, estimate work, schedule deliverables. </li></ul> Qualifications Required/minimum qualifications<div><ul><li>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.</li></ul></div><div>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: <ul><li>Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.</li></ul></div><div>Additional or preferred qualifications<div><ul><li>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 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.</li><li>Experience in training or serving Deep Neural Network models.</li><li>Experience with Language Models and ML system optimization.</li></ul></div></div> 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: <a href='https://careers.microsoft.com/us/en/us-corporate-pay'>https://careers.microsoft.com/us/en/us-corporate-pay</a> This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. <hr> 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 <a href="https://careers.microsoft.com/v2/global/en/accessibility.html">requesting accommodations.</a>

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Principal ML Architect

2025-12-04

United States, California, Mountain View +4 more

3 days / week in-office

Overview Microsoft Silicon, Cloud Hardware, and Infrastructure Engineering (SCHIE) is the team behind Microsoft’s expanding Cloud Infrastructure and responsible for powering Microsoft’s “Intelligent Cloud” mission. SCHIE delivers the core infrastructure and foundational technologies for Microsoft's over 200 online businesses including Bing, MSN, Office 365, Xbox Live, Teams, OneDrive, and the Microsoft Azure platform globally with our server and data center infrastructure, security and compliance, operations, globalization, and manageability solutions. Our focus is on smart growth, high efficiency, and delivering a trusted experience to customers and partners worldwide and we are looking for passionate engineers to help achieve that mission. As Microsoft's cloud business continues to grow the ability to deploy new offerings and hardware infrastructure on time, in high volume with high quality and lowest cost is of paramount importance. To achieve this goal, the AI Silicon Architecture team is instrumental in defining and delivering operational measures of success for hardware manufacturing, improving the planning process, quality, delivery, scale and sustainability related to Microsoft cloud hardware. We are looking for seasoned engineers with a dedicated passion for customer focused solutions, insight and industry knowledge to envision and implement future technical solutions that will manage and optimize the Cloud infrastructure. We are looking for a Principal ML Architect to join the team. Responsibilities <ul type="disc"><li>Explore new algorithms and architecture for AI Silicon accelerator </li></ul><ul type="disc"><li>Develop bit-accurate C-models and test platform </li></ul><ul type="disc"><li>Drive Architecture studies by writing new Hardware Architecture exploration models </li></ul><ul type="disc"><li>Collaborate with Hardware, Software Architecture teams </li></ul><ul type="disc"><li>Support Design, DV, Emulation, kernel development teams through Silicon development cycle </li></ul> Qualifications Required/minimum qualifications<ul type="disc"><li>Doctorate in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 3+ years technical engineering experience OR Master's Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 6+ years technical engineering experience OR Bachelor's Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field AND 8+ years technical engineering experience OR equivalent experience.</li></ul>Other Requirements <ul type="disc"><li>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. </li><li>This role will require access to information that is controlled for export under export control regulations, potentially under the U.S. International Traffic in Arms Regulations or Export Administration Regulations, the EU Dual Use Regulation, and/or other export control regulations.  As a condition of employment, the successful candidate will be required to provide either proof of their country of citizenship or proof of their US. residency or other protected status (e.g., under 8 U.S.C. 1324b(a)(3)) for assessment of eligibility to access the export-controlled information. To meet this legal requirement, and as a condition of employment, the successful candidate’s citizenship will be verified with a valid passport. Lawful permanent residents, refugees, and asylees may verify status using other documents, where applicable. </li></ul>Preferred Requirements: <ul type="disc"><li>6+ years of experience in any one of the following areas: </li><ul type="circle"><li>SIMD/ SIMT architecture </li><li>Understanding of floating-point formats (IEEE/non-IEEE) and FP arithmetic </li><li>Linear algebra / matrix operations </li><li>DMA, Memory subsystem </li></ul><li>6+ years of experience with computer architecture,Hardware/Software co-design, RTL Design and DV</li><li>6+ years of experience with architecture modeling at various levels of abstraction, and analysis </li><li>6+ years of C/C++ coding experience </li><li>Team player with excellent communication skills and a growth mindset</li></ul> Silicon Engineering 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: <a href='https://careers.microsoft.com/us/en/us-corporate-pay'>https://careers.microsoft.com/us/en/us-corporate-pay</a> This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. <hr> 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 <a href="https://careers.microsoft.com/v2/global/en/accessibility.html">requesting accommodations.</a>

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