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Airflow Modeler – Data Center Design
Arcadis
NY · San Francisco, CA · Sacramento, CA · New York · San Francisco · Sacramento
…distribution and thermal performance around server racks, containment systems, raised-floor or overhead air distribution, and cooling systems including CRAC/CRAH units, direct-to-chip…
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YH
Data Center Hardware Technician - Lockport, NY (on-site)
Yahoo Holdings Inc.
United States
- $59,250 to $123,125 USD / year
…of people. Whether you’re looking to write mobile app code, engineer the servers behind our massive ad tech stacks, or develop algorithms to help us process trillions of data points a day,…
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Quality Automation Engineer (SDET) - Multiple Positions
Equifax, Inc.
Saint Louis, MO
Quality Automation Engineer (SDET) for Equifax Inc. in St. Louis, MO, (**Multiple Positions Available**) to code, test, debug and implement software solutions. Lead complex testing efforts,…
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Senior Subrogation Adjuster (Remote, US)
Openly
Remote, United States
- $80,500 to $96,250 USD / year
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Added 3 mins ago
Avionics Test Systems Engineer
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Redmond, WA
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Added 4 mins ago
Lead Engineer – Plant Systems Integration
GE Vernova
Wilmington, NC · Atlanta, GA · Cambridge, MA · Greenville, SC · Houston, TX · Pensacola, FL · Schenectady, NY
The Lead Engineer performs a key role within GE Hitachi’s Plant Systems Integration teams which focus on development of new advanced nuclear reactor projects (SMR and SFR). You will be…
Added 4 mins ago
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TX
Exposure to low-power electronics, battery-powered systems, or embedded hardware.
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Senior Software & AI Engineer
St. Jude Medical, Cardiology Division, I
United States
The Senior Software & AI Engineer position works onsite in Sylmar, California within Abbott's Cardiac Rhythm Management (CRM) business.
Added 4 mins ago
Supplier Quality Engineer II
St. Jude Medical, Cardiology Division, I
MN
Supplier Quality Engineer II drives improvement and corrective action in the quality of components sourced from outside suppliers. Provides technical
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Senior Development Quality Engineer
St. Jude Medical, Cardiology Division, I
CA
The Senior Development Quality Engineer assures new or modified products conform to quality standards and establishes compliance with the quality system. Responsible for maintaining a…
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Software Quality Engineer I
St. Jude Medical, Cardiology Division, I
CA
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Added 5 mins ago
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The Swift Group
United States
…including routers, switches, servers, leased lines, cryptographic systems, UHF radio equipment, and tactical radio platforms…
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Kankakee, IL
This position is with the Plant Engineering group. The Plant Engineer II will be responsible for leading and developing engineering projects and continuous improvement of manufacturing…
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…Engineers, and QA Engineers to build, scale, and evolve the systems that power our customer-facing reporting and analytics features. This role bridges hands-on technical work, architectural…
Added 7 mins ago
SDEII Specialist GenAI Tooling, Specialist Technology Team (STT), AWS WWSO SA Field Initiatives
Amazon Web Services, Inc.
Jersey City, NJ · Austin, TX · Bellevue, WA · New York, NY · Houston, TX
- 2+ years of non-internship design or architecture (design patterns, reliability and scaling) of new and existing systems experience
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Associate Electrical Engineering Manager
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Direct Reports: Electrical Engineer I and Electrical Engineer II positions (headcount as assigned, 8-12 team members)
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Network Engineer I
Teknor Apex Company
Remote, United States
The Network Engineer I provides operational support for the enterprise network infrastructure and related technologies that enable business, manufacturing, communications, and collaboration…
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Mgr Industrial Engineer
SurePods
Orlando, FL
Manages the design, implementation, and improvement of industrialized production systems supporting DPR’s prefabrication and product delivery efforts. Applies industrial engineering…
Added 8 mins ago
Mgr Industrial Engineer
SurePods
Orlando, FL
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Linux/HPC Systems EDA Engineer (Semiconductor)
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Chandler, AZ
- $140,000 to $180,000 USD / year
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Added 10 mins ago
Senior Associate Data Engineering Azure/Databricks Arlington Hybrid
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Houston, TX
We are seeking a hands-on Senior Data Engineer with strong expertise in Databricks, PySpark, Spark SQL, Delta Lake, Unity Catalog, and cloud-based data platforms. You will build scalable…
Added 11 mins ago
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Application Controls Specialist
Sonepar
Normal, IL
- $75,000 to $100,000 USD / year
…quality check assigned projects. In addition, the Controls Engineer will work closely with associates, customers, and manufacturing partners. Our services include Control Engineering,…
Added 13 mins ago
SRE Security Engineer
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Remote, United States
An SRE Security Engineer who takes ownership of security findings from detection through resolution - remediating misconfigurations, vulnerabilities, and access issues across AWS, Azure,…
Added 13 mins ago
Gas Turbine Controls Development Engineer
GE Gas Turbines (Greenville) L.L.C.
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…reconstruction solutions. As a Gas Turbine Controls Development Engineer, you design and implement control solutions that have a direct, meaningful impact on global energy systems. Working…
Added 13 mins ago
Lead Engineer – Plant Systems Integration
GE Vernova Hitachi Nuclear Energy Americas LLC
United States
The Lead Engineer performs a key role within GE Hitachi’s Plant Systems Integration teams which focus on development of new advanced nuclear reactor projects (SMR and SFR). You will be…

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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