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Full Stack Software Engineer
HeyMilo AI
New York City, NY
- $120,000 to $200,000 USD / year
We're looking for a Senior Full-Stack Engineer who thrives in a fast-paced, highly dynamic environment. This role is all about quickly building and iterating on features, and working…
Added 1 min ago
MB
Sr. ML Engineer
Memory Bridge
Remote, United States
- IRR 800,000,000 to IRR 1,200,000,000 IRR / year
The ideal candidate has evolved from senior software development into NLP/ML, bringing the architectural thinking and code craftsmanship needed to tackle complex memory persistence,…
Added 1 min ago
Sr. Applied ML Engineer
Memory Bridge
Remote, United States
The ideal candidate has evolved from senior software development into NLP/ML, bringing the architectural thinking and code craftsmanship needed to tackle complex memory persistence,…
Added 1 min ago
NC
Junior Software Engineer (QA & Automation)
Ngo Consulting Partners
Remote, United States
- $28 to $38 USD / hour
This role is ideal for an early-career engineer excited to work on AI and data-driven products. You’ll help ensure the accuracy, consistency, and reliability of our systems while learning…
Added 1 min ago
Senior Software Engineer
Catapult Consultants, LLC
Henrico, VA
Catapult Consultants is seeking a Senior Software Engineer to support the engineering, analysis, design, development, programming, and maintenance of custom software programs according to…
Added 8 mins ago
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Senior Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
We are seeking a highly skilled and committed Senior Software Engineer to join our team. This role is central to advancing our quantum software roadmap and requires passion for software…
Added 8 mins ago
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Senior Software Engineering Manager
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
…integration of our modules into Microsoft’s AI Platform. As a Senior Software Engineering Manager on our team, you will shape our program’s development lifecycle, establish engineering best…
Added 8 mins ago
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Senior Mechanical Engineer
Microsoft
NC · Charlotte, NC · Charlotte
- $119,800 to $261,000 USD / year
Microsoft’s Cloud Operations & Innovation (CO+I) is the engine that powers our cloud services. As a CO+I Senior Mechanical Engineer, you will perform a key role in delivering the core…
Added 9 mins ago
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Principal Software Engineer - AI Infrastructure
Microsoft
WA · Redmond, WA · Redmond
- $142,800 to $304,200 USD / year
As a Principal Software Engineer on this team, you will own the architecture and technical direction of major components of the training platform and drive them from ambiguous problem…
Added 9 mins ago
M
Senior Cloud Network Engineer
Microsoft
United States
- $119,800 to $261,000 USD / year
As a Senior Cloud Network Engineer in the Azure Dedicated Team, you will design and operate Network Fabrics for both traditional ethernet networks and back-end networks such as RDMA and…
Added 11 mins ago
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AMHS Intelligent Systems Engineer
Intel Corporation
OR
- $128,880 to $211,200 USD / year
We are seeking an experienced Manufacturing Systems Software Development Engineer to take ownership of real-time cleanroom automation architectures, high-availability control software, and…
Added 17 mins ago
Integration Services Senior Engineer
Leidos
Pearl Harbor, HI
We are seeking a highly motivated and experienced Senior Network Engineer onsite at Ford Islan, Hawaii. In this Integration Services role, you will lead a team of engineers, perform project…
Added 24 mins ago
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Software Engineer (Austin)
Austin, TX
- $6,400 to $7,900 USD / month
The Software Engineer (Programmer IV) performs advanced (senior-level) computer programming and full lifecycle software development. Responsibilities involve driving projects from…
Added 31 mins ago
Senior embedded software engineer
US Tech Solutions
Cary, NC
Review system-level requirements, and process them into software requirements specifications
Added 31 mins ago
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Advanced Quality Engineer
Xyant Technology, Inc.
Litchfield, MI
- $75,000 to $80,000 USD / year
The Senior Quality Engineer is responsible for managing and resolving customer concerns while facilitating irreversible corrective actions into the manufacturing process.
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Senior Software Engineer
Workila
Washington, DC
The Senior Software Engineer /Solutions Architect will be a key member of an Enterprise Application Implementation project team and is responsible for the overall design of the application…
Added 31 mins ago
Sr UI Engineer
Veredus - DC
Northern, VA
Veredus are currently seeking a talented Senior UI Engineer - Web Applications to join our client's growing team. For this position, prior experience developing scalable, rich, internet…
Added 31 mins ago
Sr. Cloud Architect
Veredus - DC
Vienna, VA
…systems. • Provide team lead support and guidance to Tier 3 (Senior) Engineers and rest of engineering team • Evaluate customer requirements on large enterprise deployments to provide…
Added 31 mins ago
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Sr. Network Engineer
Veredus - DC
Washington, DC
- $48 to $55 USD / hour
Knowledge of the Software Development Life Cycle Process;
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Senior .Net Developer- vb.net to C# Migration - Perm Role!!!
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We're currently partnering with a Fortune 500 Client, helping identify a Senior Software Engineer to join their growing team. They have a variety of applications and are migrating to the…
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Ruby on Rails Engineer
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SENIOR JAVA ENGINEER WITH CLOUD EXPERIENCE
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We are currently seeking an experienced Engineer to join a fast-growing technology firm working on cutting-edge development. The Engineer will be working in a dynamic team environment…
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Senior Software Engineer
Vier Diamond Staffing Firm
Minneapolis, MN
Contributes to the development of new techniques and plans within area of expertise.
Added 31 mins ago
Senior Mechanical Engineer
Vier Diamond Staffing Firm
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Knowledge in mechanical product development process.
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Senior Manager Quality Engineer (Medical Devices and Pharma Experience required)
Validation & Engineering Group
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Microsoft

Principal Software Engineer - AI Infrastructure

WA, United States
Redmond, WA, United States
Redmond, United States

$142,800 to $304,200 USD / year

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Job details

Pay: $142,800 to $304,200 USD / year
Apply by: May 2, 2027
Posting language: English
Posted: Nov 3, 2026

Original job description

Overview

Help build the infrastructure that trains the next generation of agentic Artificial Intelligence (AI) models at Microsoft. The Cloud + AI (C+AI) organization builds the end-to-end AI stack that powers innovation across Azure and Microsoft. The Foundry, Inference and Training (FIT) Training Team is where frontier-scale model training meets production-grade engineering. You will work alongside engineers and researchers to advance the scientific methods and scalable infrastructure used to train Large Language Models (LLMs), Small Language Models (SLMs), and agentic models, spanning both proprietary and open-weight models and building on open-source training frameworks. Your work will directly shape how reliable, enterprise-grade agentic workflows are built across the company and experienced by the customers who depend on them.

As a Principal Software Engineer on this team, you will own the architecture and technical direction of major components of the training platform and drive them from ambiguous problem statements through production operation. You will keep the customer at the center of every decision, partnering directly with the researchers and product teams who rely on the platform to understand their needs, remove friction, and measure success by their outcomes. You will set the technical bar for the team through design leadership, code and test-strategy reviews, and mentorship, and you will partner across C+AI and with partner organizations to align infrastructure roadmaps with model training and evaluation needs. This opportunity will allow you to deepen your expertise in large-scale distributed systems for AI training, develop firsthand understanding of how frontier proprietary and open-weight models are trained and evaluated, and grow your influence as a technical leader who shapes architecture, engineering practices, and the next generation of engineers on a fast-moving, startup-style team.

We are looking for a curious, independent, adaptable, and customer-obsessed problem-solver who thrives on continuous learning, is energized by evolving priorities, and is motivated by the impact your work has on the people who use it. You write efficient, well-tested code, enjoy debugging hard problems in complex distributed systems, and share what you learn. You iterate quickly, adjust course when the evidence calls for it, and collaborate effectively in a dynamic environment. 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

Own the architecture and technical direction of major components of the training platform for Large Language Models (LLMs), Small Language Models (SLMs), multimodal, code-specific, and open-weight models, ensuring designs meet scalability, reliability, security, and cost-efficiency requirements.
Partner directly with customers, including researchers and product teams across Microsoft, to understand their training and evaluation needs, translate them into platform requirements, and measure success through customer experience and outcomes.
Drive ambiguous, multi-quarter initiatives from proposal to production, breaking work into milestones, identifying dependencies, and negotiating ownership and delivery commitments with partner teams across Cloud + AI (C+AI).
Build on and extend open-source training frameworks (for example, PyTorch, DeepSpeed, Megatron-LM, and Hugging Face libraries), adapting them for proprietary and open-weight models and contributing improvements back to the community where appropriate.
Design and build services that serve production traffic while meeting Microsoft security, privacy, Responsible AI, and compliance requirements, including auditable evidence of compliance.
Lead debugging and resolution of complex issues in distributed training jobs and production services; participate in the on-call rotation as a Designated Responsible Individual (DRI), lead incident retrospectives, and improve troubleshooting guides, testing, safe deployment, and monitoring.
Mentor engineers and raise the technical bar through design reviews, code reviews, and ownership of the team's test strategy, while championing AI-assisted engineering tools and practices across the software development lifecycle.

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, or Python OR equivalent experience.

Preferred Qualifications:

Master'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 Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
5+ years designing, building, and operating large-scale distributed systems or cloud platforms with end-to-end ownership of production services, including Kubernetes-based containerized platforms on Microsoft Azure, Amazon Web Services (AWS), or Google Cloud, control-plane or backend services that manage compute, storage, and networking, and secure multi-tenant designs covering authentication, authorization, workload identity, quota management, and isolation.
3+ years building machine learning training infrastructure, such as Graphics Processing Unit (GPU) cluster scheduling, data pipelines, and checkpointing and storage systems, using open-source training frameworks such as PyTorch Fully Sharded Data Parallel (FSDP), DeepSpeed, Megatron-LM, Hugging Face Transformers and Accelerate, or Ray Train; contributions to open-source projects are a strong plus.
2+ years training, fine-tuning, or evaluating open-weight models (for example, Llama, Mistral, Phi, Qwen, or DeepSeek model families) at multi-node scale.
2+ years building or operating Reinforcement Learning (RL) post-training pipelines for Large Language Models (LLMs) and agentic models using verl, slime, MILES, or comparable frameworks, with a demonstrated understanding of the end-to-end training stack, including pretraining and post-training frameworks, Reinforcement Learning Environments (RLEs), rollout inference engines (for example, vLLM or SGLang), evaluation, and checkpointing, and how design choices at each layer affect throughput, stability, and cost.
3+ years serving as an on-call or Designated Responsible Individual (DRI) engineer for production services operating against defined availability or latency targets, including incident response, postmortems, structured logging, distributed tracing, dashboards, alerting, automated validation, and incident playbooks.
2+ years partnering directly with internal or external customers to define requirements, instrument customer experience (for example, adoption, satisfaction, or time-to-first-result metrics), and prioritize engineering work by customer impact.
Experience leading technical design across 2+ teams, driving ambiguous multi-quarter initiatives to completion, and mentoring senior engineers.

#AIPLATFORM #AIINFRA

Software Engineering 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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More about this job

Skills

Scientific research methodology
Leadership
Debugging
Customer experience
PyTorch
Hugging Face
Troubleshooting
Software development
Computer science
C
C++
C#
Oracle Java
JavaScript
Python
Kubernetes
Microsoft Azure
AWS
Google Cloud
Machine learning
Scheduling
Incident response
Coaching

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