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Senior/ Staff Software Engineer, Platforms
Sagora
Boston, MA
…decade of their research, Sagora is the autonomous engineering platform for AI systems. We compress weeks of expert engineering into hours, continuously improving the performance, cost and…
Added just now
AI Systems Engineer
Sagora
Boston, MA
…decade of their research, Sagora is the autonomous engineering platform for AI systems. We compress weeks of expert engineering into hours, continuously improving the performance, cost and…
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Integration Engineer - Fintech Platform
Sonar Search
Remote, United States
Our client, a fast-growing fintech startup, is seeking an Integration Engineer to build and maintain critical data integrations for their financial analytics platform. Success in this…
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AI Engineer - Fintech Platform
Sonar Search
Remote, United States
Our client, an innovative fintech startup, is seeking an AI Engineer to build intelligent agents and LLM-powered features for their financial automation platform. Success in this position…
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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…
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CTO (Co-founder)
Straffing AI
New York, NY
- $141,000 to $150,000 USD / year
We are supporting a funded early-stage startup building an AI-powered platform focused on transforming healthcare payment and revenue-cycle operations.
Added 1 min ago
AI Scientist / Engineer (Data Science & Analytics)
Cinter Career
Plano, TX
・Job Title: AI Scientist / Engineer (Data Science & Analytics)
Added 1 min 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 1 min ago
Software Engineer
Actioneer
Mountain View, CA
At Actioneer, we’re building a voice-first customer engagement platform to help enterprises provide intuitive, consumer-grade experiences for their customers. Our suite is designed for…
Added 2 mins ago
Frontend Software Engineer
Bainbridge Health
Philadelphia, PA
As a Frontend Software Engineer, you will play a pivotal role in expanding the usability, reliability, and impact of Bainbridge Health’s platform. You will:
Added 2 mins ago
Cloud & IT Operations Engineer
Bainbridge Health
Philadelphia, PA
…Children's Hospital of Philadelphia, we work with premier health systems, device manufacturers, and pharmaceutical companies across the United States. We are venture-backed, growing…
Added 2 mins ago
Backend Software Engineer
Bainbridge Health
Philadelphia, PA
…Children's Hospital of Philadelphia, we work with premier health systems, device manufacturers, and pharmaceutical companies across the United States. We are venture-backed, growing…
Added 3 mins ago
Staff/Senior Backend Engineer
Casap
San Francisco, CA
Proactively identify areas for improvement in our platform's infrastructure and systems, implementing optimizations that enhance operational efficiency and product quality.
Added 6 mins ago
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Senior Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
The Quantum Fleet Platform team builds the shared infrastructure that powers Microsoft’s quantum computing efforts. It owns the foundational software, services, and tooling that provision,…
Added 6 mins ago
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Principal Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $165,600 to $331,200 USD / year
We are hiring a Principal Software Development Engineer to join the Azure PostgreSQL team, where you will work on and drive innovations in one or more areas of a relational database…
Added 6 mins ago
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Senior Software Engineering Manager
Microsoft
WA · Redmond, WA · Redmond
- $119,800 to $261,000 USD / year
…framework for 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…
Added 6 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 7 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 7 mins ago
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Principal Software Engineer
Microsoft
WA · CA · Redmond, WA · Mountain View, CA · Redmond · Mountain View
- $165,600 to $331,200 USD / year
The Agent 365 Foundation team builds the shared infrastructure behind Microsoft's agent platform. Agents across Microsoft 365, Dynamics 365, Power Platform and beyond are deployed, secured,…
Added 8 mins ago
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Senior Software Engineer
Microsoft
WA · CA · Redmond, WA · Mountain View, CA · Redmond · Mountain View
- $119,800 to $261,000 USD / year
…understand where work happened, what failed, and how the underlying platform behaved. That makes telemetry part of the foundation for dependable AI, not just a tool for debugging…
Added 8 mins ago
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Principal Software Engineer
Microsoft
WA · CA · Redmond, WA · Mountain View, CA · Redmond · Mountain View
- $142,800 to $304,200 USD / year
You will lead the architecture and delivery of platform capabilities for public key infrastructure (PKI), certificate and key lifecycle management, workload identity, secrets protection,…
Added 28 mins ago
Project Manager (XIN001_HTQX)
Xinnovit
Atlanta, GA
Leads team of IE's (Integration Engineer ),reviews system requirements and recommends infrastructure needs, provides project delivery support, delivers complex technical engineering and…
Added 28 mins ago
System Engineer (ZIN001_HYHD)
Xinnovit
Atlanta, GA
…delivery support, delivers complex technical engineering and systems integration documents, assists in multi-platform troubleshooting of production issues…
Added 29 mins ago
Software Engineer III
US Tech Solutions
Monroeville, PA
Writing detailed automated and manual test procedures that evaluate medical device software and systems against documented requirements.
Added 29 mins ago
Software Engineer III - JS
ZIN Technologies
Brook Park, OH
systems, power converters, and optical-mechanical systems for aerospace and commercial applications.

Microsoft

Senior Software Engineer - Substrate Store

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

$119,800 to $261,000 USD / year

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Job details

Pay: $119,800 to $261,000 USD / year
Apply by: May 2, 2027
Posting language: English
Posted: Nov 3, 2026

Original job description

Overview

We are the Store team within Microsoft’s Substrate Storage Fabric - the core platform that powers Microsoft 365 experiences, from AI-powered Copilot innovations to Outlook and Teams. Our team focuses on API optimization, Azure-based search, and strengthening the security of the storage access path. We are looking for a Senior Software Engineer to help modernize Store Access. If you’re passionate about building latency-critical access APIs and high-throughput services that run on both bare-metal infrastructure and Azure at global scale, this role offers the opportunity to make a meaningful impact on the platform behind Microsoft 365. In this role, you will own significant components from design through implementation and production operation. You will collaborate across teams to solve complex distributed-systems problems, make sound technical decisions that balance performance, reliability, security, and maintainability, and deliver measurable improvements to service quality. You will contribute to architectural direction, mentor engineers, and strengthen engineering practices through thoughtful design reviews, testing, observability, and safe deployment. At Microsoft, our mission - to empower every person and every organization on the planet to achieve more - guides how we partner with customers to deliver trusted, impactful solutions. With a growth mindset culture, we innovate responsibly and measure success by shared progress - people, teams, and customers. Join us to do meaningful work that changes the world and helps shape what’s next for everyone.

Responsibilities

Design and deliver Store Access modernization - own significant components of latency-critical access APIs, search on Azure, and integrations with the broader Substrate Storage Fabric and Microsoft 365 services.
Optimize API performance at scale - design and implement high-throughput, low-latency APIs using appropriate concurrency, resource governance, caching, and back-pressure mechanisms, balancing performance, cost, and reliability.
Build and improve search systems on Azure - contribute to architectural direction and own features that improve index freshness, query performance, scalability, and cost efficiency.
Collaborate on cross-team technical decisions - work with partner teams to define interfaces, resolve dependencies, and deliver designs that meet performance, scalability, resiliency, disaster recovery, security, privacy, compliance, and accessibility requirements.
Demonstrate strong engineering craftsmanship - write maintainable, well-tested, secure, and performant code in C# and Rust; provide thoughtful code and design reviews; and mentor engineers in sound development practices.
Own production quality for your components - develop telemetry, dashboards, alerts, and quality metrics to validate improvements, detect latency and security regressions, and support effective troubleshooting and service operation.
Apply AI-assisted development responsibly - use and evaluate AI tools to improve engineering productivity and quality while validating generated requirements, designs, code, tests, and operational assets against established engineering and security standards.

Qualifications

Required Qualifications

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, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.

Preferred Qualifications

Experience designing and optimizing high-throughput, low-latency APIs and services, including concurrency control, resource management, caching, and API contracts.
Solid proficiency in C# and/or Rust, with a solid understanding of system performance, memory management, concurrency, and multithreading.
Experience building and operating large-scale distributed systems, with a focus on reliability, observability, testing, and safe deployment practices.
Demonstrated experience owning significant software components from technical design through implementation, deployment, and production support.
Experience troubleshooting production issues and participating in on-call support for customer-facing services.
Demonstrated ability to mentor engineers, provide effective code and design reviews, and collaborate across teams to resolve technical challenges and deliver shared outcomes.

Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 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 $160,200 - $261,000 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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