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Added 1 min ago
Research Engineer
Gauntlet
Remote, United States
Gauntlet is looking for an AI Research Engineer to help improve how we build, evaluate and use AI agents across the business.
Added 1 min ago
Senior Software Development Engineer, Marine & RV/Camping
Storable
Seattle, WA
Storable is seeking a Senior Software Development Engineer to join our Marine and RV & Camping Divisions (Storable Marine and Newbook) and help build the software that powers the day-to-day…
Added 2 mins ago
System Engineer
NTTD Ser Fed Govt, Inc.
Newark
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,…
Added 2 mins ago
System Engineer
NTTD Ser Fed Govt, Inc.
Los Angeles
NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,…
Added 2 mins ago
Data Engineer
FIS Global
Atlanta, GA
The Enterprise Data & AI Platform team provides the data-integration and platform capabilities that support Capital Markets products and client data services. The team operates and enhances…
Added 2 mins ago
Engineer Lead, Data
FIS Global
Atlanta, GA
The Enterprise Data & AI team builds and operates FIS data platforms that enable secure, reliable and governed use of data across banking, capital markets and corporate functions. The…
Added 2 mins ago
Building Engineering Project Manager
HDR
Phoenix, AZ
…where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological…
Added 2 mins ago
Electrical Team Lead
HDR
Chicago, IL
…where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological…
Added 2 mins ago
Data Center Commercial Manager
HDR
Chicago, IL
…where people work, connect, and thrive. From high-performance data centers driving the future of AI to dynamic commercial environments, your work will directly support technological…
Added 3 mins ago
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Senior BI / Data QA Engineer
Kforce
Clearwater, FL
- $70 to $75 USD / hour
Kforce has a client that is seeking a Senior BI/Data QA Engineer in Clearwater, FL.
Added 3 mins ago
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RF Hardware Design Engineer
Kforce
Orem, UT
- $110,000 to $140,000 USD / year
…in Orem, UT on an exclusive search for an RF Hardware Design Engineer. This is a high-impact role for an engineer passionate about solving complex RF/microwave challenges and driving…
Added 3 mins ago
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Senior RF Hardware Design Engineer
Kforce
Orem, UT
- $135,000 to $170,000 USD / year
…Orem, UT on an exclusive search for a Senior RF Hardware Design Engineer. This position is Hybrid…
Added 4 mins ago
Staff Engineer
WEX Inc
Remote, United States
As a Staff Software Engineer, you will be the primary architect and execution lead for leading the platform changes for the Digital Credit Application.
Added 8 mins ago
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Software Engineer: Front-End
LogicGate
Chicago, IL
- $105,000 to $130,000 USD / year
As a Front-End Software Engineer at LogicGate, you will build responsive, high-performing user experiences across Risk Cloud®, our market-leading AI GRC platform. Risk and compliance teams…
Added 10 mins ago
Staff Backend Software Engineer- (AI Platform)
Databricks
San Francisco, CA · Mountain View, CA
At Databricks, we are passionate about enabling data teams to solve the world's toughest problems - from making the next mode of transportation a reality to accelerating the development of…
Added 10 mins ago
Enterprise Architect (Solutions Engineer), Identity
Workday, Inc.
Remote, United States
· 4+ years in a technical pre-sales, solutions engineering, or identity architect/engineer role, OR equivalent hands-on experience in IAM/IGA/AI.
Added 10 mins ago
Senior Forward Deployed Engineer (FDE) - Developer Platform
Workday Limited
CA
…surface complex real-world challenges - from unstructured tenant data and intricate configurations to edge-case enterprise…
Added 11 mins ago
Sr. Systems Engineer - CCA
TD SYNNEX CALA, Inc.
Miramar, FL
The Sr Systems Engineer – Cybersecurity is the technical lead for the CrowdStrike brand in the CCA (Caribbean Central America) region. The role owns presales engineering and architecture…
Added 11 mins ago
GRC Architect/ Information Security Manager- US
USA7 DXC Technology Services LLC
ANY CITY, TX
Translate business requirements into technical Archer specifications, data models, and workflow designs
Added 12 mins ago
Python Full Stack Engineer - Professional
HEXAWARE
United States
Build reusable calculation libraries, data models, validation rules, configuration services, and version-controlled datasets using Python, FastAPI, Pydantic, SQL, and PostgreSQL or approved…
Added 14 mins ago
Firmware Engineer
Samsara
Remote, United States
As a Firmware Engineer at Samsara, you will develop software that runs on millions of devices, deployed by our industrial and enterprise customers. You’ll tackle challenges including…
Added 16 mins ago
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Electrical Engineer
Actalent
Pocasset, MA
- $45 to $65 USD / hour
This Electrical Engineer role focuses on designing, integrating, and validating electrical and electromechanical systems that support advanced technologies such as autonomous underwater…
Added 16 mins ago
Mechanical Engineer
Actalent
Pocasset, MA
Support the completion of product life cycle analysis and develop technical data packages for new and existing designs.
Added 16 mins ago
Cad Design Engineer
Actalent
Torrance, CA
Job Title: CAD Design EngineerJob DescriptionThe CAD Design Engineer creates manufacturing-ready 3D models from legacy 2D technical data for government and commercial parts that currently…
Added 16 mins ago
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Manufacturing Engineer
Actalent
Charlotte, NC
- $45 to $48 USD / hour
Job Title: Manufacturing Engineer Job DescriptionThe Manufacturing Engineer serves as the primary technical resource supporting air-cooled chiller manufacturing operations on 2nd shift.…

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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