New

Principal Software Engineer, CoreAI

Microsoft
$139,900.00 - $274,800.00 / yr
United States, California, Mountain View
Mar 16, 2026
Overview Joining theCoreAIorganization at Microsoft means becoming part of the team that builds the end-to-end AI stack powering Azure's innovation. As a member of theFIT trainingteam withinCoreAI, you will help develop the AI infrastructure that accelerates the creation of agentic AI systems across Microsoft. This role is dedicated to advancing scientific methods and scalable infrastructure for training agentic models to achieve frontier-level performance. You will contribute to LLMs, SLMs, and agentic models using both proprietary and open-source frameworks, all aimed at delivering reliable, enterprise-grade agentic workflows. We areseekinga curious, independent, adaptable problem-solver who thrives on continuous learning, embraces changing priorities, and is motivated by creating meaningful impact. Candidates must be able to lead and rolemodelforteamthatisdriven, able to write efficient code, debug complex training jobs, document findings, anddemonstratea track recordof continuous improvement. In addition, we value an agile, startup-style mindset - someone who can iterate quickly, pivot when needed, and collaborate effectively in fast-paced, dynamic environments. Microsoft's mission is to empower every person and every organization on the planet to achieve more. Asemployeeswe 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. In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positivelyimpactour culture every day. Responsibilities As a membrer of our team, you will participate in developing innovative solutions across AI Platform. Responsibilities include the following. Collaboration with engineers and researchers to build and optimize training infrastructure and tools for LLMs, SLMs, multimodal, and code-specific models. Design, build and improveserviceswith high scalability and reliability. Design and implement the services to serve the prod traffic and fulfill the security and privacy requirements. Participate in efforts to deliver and improve engineering systems and practices to ensure service quality in complex cloud environments. Contribute to the deployment and monitoring of services in production environments. Qualifications Required Qualifications: Bachelor'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, Python, 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 Preferred Qualifications: Experience working with engineering teams to deliver large-scale software systems, preferably in AI, machine learning, graphics or related fields. Thrive in a fast-paced, collaborative environment and are comfortable making progress in ambiguity. Enjoy working closely with cross-functional partners and teammates in an inclusive, curious culture. Have strong opinions about best investments to make inestablishingthe most delightful and performant AI companion engineering system. Software 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: https://careers.microsoft.com/us/en/us-corporate-pay Software Engineering IC6 - The typical base pay range for this role across the U.S. is USD $163,000 - $296,400 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 $220,800 - $331,200 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.