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Founding Account Executive (Full-Cycle)
Scout Edu
New York City, NY
- $85,000 to $115,000 USD / year
Scout is the AI-native operating system for schools.
Added 1 min ago
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Senior Software Engineer
Source
Remote, United States
- $155,000 to $175,000 USD / year
Senior Software Engineer (Backend or Full-Stack)
Added 2 mins ago
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Founding Engineer, Product + AI
Clarity
San Francisco, CA
- $150,000 to $200,000 USD / year
Clarity is an operating system for revenue in a business. An AI-powered workspace that sales, customer support, and product work out of to close customers, prevent churn, and build product.
Added 2 mins ago
C
Founding Engineer, Backend + Infra
Clarity
San Francisco, CA
- $150,000 to $200,000 USD / year
Clarity is an operating system for revenue in a business. An AI-powered workspace that sales, customer support, and product work out of to close customers, prevent churn, and build product.
Added 2 mins ago
AR
Mid/Senior Level Robotics Software Engineer
AlphaOne Robotics
Dallas, TX
- $100,000 to $150,000 USD / year
Join our innovative robotics team as a Robotics Software Engineer, where you'll play a pivotal role in building foundational technologies for a disruptive company transforming warehouse…
Added 2 mins ago
AR
Junior Robotics Software Engineer
AlphaOne Robotics
Dallas, TX
- $60,000 to $90,000 USD / year
Join our innovative robotics team as an Junior Robotics Software Engineer, where you'll play a key role in supporting the foundational technologies for a disruptive company transforming…
Added 4 mins ago
Founding Engineer, R&D
Drover Labs
Berkeley, CA
As a Founding Engineer, you will be a core part of the team creating a robot that must survive operating for long durations in some of the most cramped, dark, dirty, and hazardous…
Added 4 mins ago
Founding Engineer, Avionics
Drover Labs
Berkeley, CA
As a Founding Engineer, you will be a core part of the team creating a robot that must survive operating for long durations in some of the most cramped, dark, dirty, and hazardous…
Added 4 mins ago
EA
Senior Product Engineer (India)
Elm AI
Remote, United States
- ₹3,500,000 to ₹7,000,000 INR / year
Our customers include multi-billion-dollar global brands. Our ambition is much larger: to build the agent-first operating layer for how global supplier work gets done.
Added 5 mins ago
Maintenance Engineer 1
La Siesta Resort & Villas
Islamorada, FL
…Our hotel or resort is looking for an Entry Level Maintenance Engineer to join our team. As a Maintenance Engineer, you will play a vital role in ensuring our property remains in top…
Added 8 mins ago
Senior Principal Software Engineer (Python) – Founding Engineer - Seattle
Solvin AI
WA · Seattle, WA
We are a funded, early-stage AI startup operating in stealth mode.
Added 10 mins ago
Product Manager (Forward-Deployed)
Ume Intelligence, Inc.
Remote, United States
When an operational edge case occurs for a client, you resolve it immediately and engineer safeguards so it cannot happen again. When an operator executes the same workflow manually for the…
Added 11 mins ago
Founding Simulation Engineer
Aviary Robotics
San Francisco, CA
We're hiring a founding simulation engineer to build and own our simulation stack - from open-loop dynamics modeling to closed-loop control and autonomy testing. Your work will directly…
Added 11 mins ago
Founding Mechanical Engineer
Aviary Robotics
San Francisco, CA
We're looking for a founding mechanical engineer to own the physical design of our robotic platform end to end - airframe, actuation, and the mechanisms that let the system physically…
Added 12 mins ago
Senior/Staff/Principal Software Engineer
Ease Health
New York City, NY
Senior/Staff/Principal Software Engineer - Ease Health
Added 12 mins ago
Frontend Software Engineer
Ease Health
New York City, NY
Ease is transforming behavioral health through AI automation and vertical integration. We're building the operating system for behavioral health - combining EHR, RCM automation, and…
Added 14 mins ago
Controls Engineer
Marble Technologies
Lincoln, NE · Omaha, NE
As a Controls Engineer at Marble, you will help lead the development and support of advanced control systems for our intelligent, automated food processing solutions. You will work at the…
Added 15 mins ago
Systems and Operations Intern
Sigma Growth Specialists
Remote, United States
…paperwork." We are looking for a systems thinker who wants to help us engineer a world-class employee experience. You will work at the intersection of Operations, CRM Architecture, and…
Added 15 mins ago
Principal Agentic AI Security Engineer
HPE
Spring, TX
The Agentic AI Engineer is responsible for designing, building, and operating production-grade agentic systems that combine foundation models, software services, enterprise data, tools, and…
Added 16 mins ago
Backend Engineer
Xpert Development
Remote, United States
We are seeking a dynamic and passionate Backend Software Engineer to join our innovative development team. In this role, you will be at the forefront of designing, developing, and…
Added 16 mins ago
AM
Software Engineer, AI & Automation
Ace Marketing Services, Inc.
Winter Park, FL
- $55 to $65 USD / hour
Software Engineer, AI & Automation - Ace Marketing Services
Added 17 mins ago
Cloud & IT Operations Engineer
Bainbridge Health
Philadelphia, PA
Bainbridge Health is hiring a Cloud & IT Operations Engineer to own core internal IT administration and employee support across Google Workspace, Mosyle, and company devices, while also…
Added 17 mins ago
Backend Software Engineer
Bainbridge Health
Philadelphia, PA
As a Backend Software Engineer, you will play a pivotal role in driving growth and expanding our impact on patient safety. You will:
Added 21 mins ago
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Senior Mechanical Engineer
Microsoft
NC · Charlotte, NC · Charlotte
- $119,800 to $261,000 USD / year
…that powers our cloud services. As a CO+I Senior Mechanical Engineer, you will perform a key role in delivering the core infrastructure and foundational technologies for Microsoft's online…
Added 22 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…

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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