Principal Research Engineer

As a Principal Research Engineer at Microsoft, you will set the technical vision...

Location

United States , Redmond

Salary:

163000.00 - 296400.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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
Ability to meet Microsoft, customer and/or government security screening requirements
Microsoft Cloud Background Check

Job Responsibility

Define and execute technical strategy for foundational models, multi-agent systems, and next-generation Copilot experiences, especially within Business & Industry Copilot
Lead cross-team efforts to deliver scalable, reliable, and responsible AI systems
Advance the state of the art and translate breakthroughs into measurable customer and business impact
Architect and deliver complex AI systems across model development, data, infra, evaluation, and deployment spanning multiple product lines
Set technical direction for large programs
drive alignment across Research, Engineering, and Product
Integrate LLMs, multimodal models, multi-agent architectures, and RAG into Microsoft’s ecosystem
Establish best practices for MLOps, governance, and Responsible AI, compliant with Microsoft principles and industry standards
Drive original research and thought leadership (whitepapers, internal notes, patents)
convert insights into shipped capabilities

Fulltime

Principal Product Manager - AI Multimodal

Help deliver one of the best foundational models in the world at Microsoft AI. A...

Location

United Kingdom , London

Salary:

Not provided

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Minimum of Bachelor's Degree AND experience in working with AI researchers, product/technical program management, data analysis, or product development OR equivalent experience
Experience managing cross-functional and/or cross-team projects
Proven track record as a Product Manager with first-hand experience evaluating and deploying LLMs into production
Experience working side-by-side with Researchers and/or Engineers

Job Responsibility

Identifying and prioritizing language and multimodal model issues and working with researchers to find a path to resolution
Creating novel data collection tasks for taskers to evaluate models and to collect training data for fine-tuning
Creating model prototypes to prove out new feature directions and scope projects
Engineering prompts to teach models how to behave across a wide range of scenarios
Working closely with researchers and engineers to define and manage engineering and research projects
Deploying and tracking AB model experiments in production
Foster a culture of collaboration, continuous improvement, and growth
Collaborate closely with teams on infrastructure, data engineering, pre-training, post-training, and product feedback
Advance the AI frontier responsibly
Embody our culture and values

Fulltime

Principal Research Engineer

As a Principal Research Engineer at Microsoft, you will set the technical vision...

Location

United States , Redmond

Salary:

163000.00 - 296400.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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
Ability to meet Microsoft, customer and/or government security screening requirements
Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Job Responsibility

Define and execute technical strategy for foundational models, multi-agent systems, and next-generation Copilot experiences, especially within Business & Industry Copilot
Lead cross-team efforts to deliver scalable, reliable, and responsible AI systems
Advance the state of the art and translate breakthroughs into measurable customer and business impact
Architect and deliver complex AI systems across model development, data, infra, evaluation, and deployment spanning multiple product lines
Set technical direction for large programs
drive alignment across Research, Engineering, and Product
Integrate LLMs, multimodal models, multi-agent architectures, and RAG into Microsoft’s ecosystem
Establish best practices for MLOps, governance, and Responsible AI, compliant with Microsoft principles and industry standards
Drive original research and thought leadership (whitepapers, internal notes, patents)
convert insights into shipped capabilities

Fulltime

Principal Research Engineer - Generative AI - AI Frontiers

The AI Frontiers lab at Microsoft Research is charted with ambitious research go...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelors in Computer Science or relevant field AND 6+ years related experience
OR Master's Degree in Computer Science or related field AND 4+ years related experience
OR Doctorate in Computer Science or related field AND 3+ years related experience
OR equivalent experience
1+ year(s) experience developing with Python and Pytorch/JAX
Familiarity with architecture and optimizations for large language models
Hands-on work in debugging and profiling Pytorch distributed code
Basic understanding of working of CUDA kernels
Familiarity with pre-training, mid-training and/or post-training pipelines for language and/or multimodal models
Foundational understanding of reinforcement learning and key challenges in the field

Job Responsibility

Design, develop, execute, and implement technology research projects in collaboration with other researchers, engineers, and product groups
Be a part of research breakthroughs in the field and play a crucial role in developing, improving, and exploring the capabilities of Large Language Models (LLMs), reasoning and agentic AI
Embody our culture and values

Fulltime

Principal Software Engineers - Applied AI for Microsoft Threat Protection

The Microsoft Security Organization is building the next generation of security ...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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, Python, C#, Go, or Java OR equivalent experience
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
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
6+ years of experience designing, building and operating scalable ML systems, including ML infrastructure and pipelines (Azure ML, Kubernetes), model versioning, observability, and secure deployment, with hands‑on experience in MLOps/AIOps/SecDevOps practices
6+ years of experience building secure, reliable software systems, with applied knowledge of authentication, data protection, access control, and secure coding practices
6+ years of experience designing, building, and operating distributed or cloud‑scale systems (Azure, AWS, or GCP), including production ownership, CI/CD integration, and operating highly available services
2+ years of experience designing and building applications with LLM orchestration frameworks (e.g., LangChain, AutoGen), including agent‑based workflows, RAG pipelines, prompt engineering, and model fine‑tuning/evaluation

Job Responsibility

Design and evolve AI‑driven security systems leveraging large language models, multimodal models, and frontier capabilities to address complex security challenges
Develop contextual knowledge systems, including security graphs, semantic representations, memory frameworks, and high‑quality reasoning over security data
Collaborate across disciplines with Security Engineers, domain experts, and Product Managers to define inclusive, AI‑native security experiences
Partner with AI Infrastructure and Platform teams, Research, and Model Engineering groups to translate security workflows into AI‑optimized architectures
Enable automation, augmentation, and responsible autonomy to drive measurable functional improvements across security solutions
Prototype, validate, and deploy solutions in live production environments while upholding Microsoft standards for security, reliability, privacy, and trust
Shape technical direction for AI Security by influencing architecture, tooling, engineering practices, and shared best practices
Lead cross‑team initiatives spanning security products, platforms, and business units through collaboration and shared ownership
Mentor and sponsor engineers at multiple levels, fostering inclusive technical dialogue, sound engineering judgment, and continuous growth
Contribute to a culture of learning, accountability, and impact across the broader engineering and security community

Fulltime

Principal Product Manager, AI Multimodal

At Microsoft AI, we are on a mission to train the world’s most capable AI fronti...

Location

United States , Mountain View

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor’s Degree AND 8+ year's experience in product management or software development OR equivalent experience
Experience managing cross-functional and/or cross-team projects
Proven track record as a product manager with firsthand experience evaluating and deploying LLMs into production
Experience working side-by-side with Researchers and/or Engineers
Deeply understand the pipeline of collecting data, training and then serving language models and multimodal models
Have experience in working side-by-side with researchers and engineers
Thrive in a fast-paced, innovative environment
Are passionate about managing high stakes time-sensitive large-scale programs
Take the initiative and enjoys finding paths through complexity in a fast-paced environment
Are comfortable owning projects that span offices, teams and time zones, can co-ordinate different workstreams, and drive to relentlessly unblock progress

Job Responsibility

Identifying and prioritizing language and multimodal model issues and working with researchers to find a path to resolution
Creating novel data collection tasks for taskers to evaluate models and to collect training data for fine-tuning
Creating model prototypes to prove out new feature directions and scope projects
Engineering prompts to teach models how to behave across a wide range of scenarios
Working closely with researchers and engineers to define and manage engineering and research projects
Deploying and tracking AB model experiments in production
Foster a culture of collaboration, continuous improvement, and growth
Collaborate closely with teams on infrastructure, data engineering, pre-training, post-training, and product feedback
Advance the AI frontier responsibly
Embody our culture and values

Fulltime

Principal Research Engineer

As a Principal Research Engineer at Microsoft, you will set the technical vision...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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, or Python OR equivalent experience.
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.

Job Responsibility

Define and execute technical strategy for foundational models, multi-agent systems, and next-generation Copilot experiences, especially within Business & Industry Copilot.
Lead cross-team efforts to deliver scalable, reliable, and responsible AI systems.
Advance the state of the art and translate breakthroughs into measurable customer and business impact.
Architect and deliver complex AI systems across model development, data, infra, evaluation, and deployment spanning multiple product lines.
Set technical direction for large programs
drive alignment across Research, Engineering, and Product.
Integrate LLMs, multimodal models, multi-agent architectures, and RAG into Microsoft’s ecosystem.
Establish best practices for MLOps, governance, and Responsible AI, compliant with Microsoft principles and industry standards.
Drive original research and thought leadership (whitepapers, internal notes, patents)
convert insights into shipped capabilities.

Fulltime

Principal Research Engineer - Agent 365

Copilot usage is growing rapidly across Microsoft 365 and custom agent experienc...

Location

United States , Redmond

Salary:

139900.00 - 274800.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

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, or Python OR equivalent experience
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Job Responsibility

Architect and deliver AI systems across model development, data, infra, evaluation, and deployment spanning multiple product lines
Set technical direction for large programs
drive alignment across Research, Engineering, and Product
Integrate LLMs, multimodal models, multi-agent architectures, and RAG into Microsoft’s ecosystem
Establish standards for MLOps, governance, and Responsible AI, compliant with Microsoft principles and industry standards
Drive original research and thought leadership (whitepapers, internal notes, patents)
convert insights into shipped capabilities
Research Translation: Continuously review emerging work
identify high-potential methods and adapt them to Microsoft problem spaces
Production Integration: Turn research prototypes into production-quality code optimized for scale, latency, and maintainability

Fulltime

Principal Research Engineer - Multimodal AI

Microsoft Corporation

Location:
United States , Redmond ▼
New York City

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
January 05, 2026

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Principal Research Engineer - Multimodal AI

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Location:United States , Redmond ▼New York City

Category:IT - Software Development

Contract Type:Not provided

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Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:January 05, 2026

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