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Principal Software Engineer United States Jobs

466 Job Offers

Principal Software Engineer
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Lead large-scale data infrastructure projects as a Principal Software Engineer in Redmond. Utilize your 8+ years of coding expertise in C++, Java, or Python to build high-availability services with Azure Data Lake and COSMOS. Solve ambiguous problems with world-class teams, directly impacting maj...
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United States , Redmond
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Salary
163000.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Supercomputing Operations Software Engineer
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Join Microsoft Azure's AI/HPC team to build and operate world-leading cloud supercomputers. As a Principal Engineer, you'll be the technical authority for InfiniBand and GPU fabric operations, ensuring reliability for frontier AI training. This role requires deep expertise in large-scale HPC/AI i...
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United States , Multiple Locations
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Lead the development of AI-powered employee self-service experiences as a Principal Software Engineer in Redmond. You will design extensibility features for Microsoft Copilot Studio and BizChat, integrating with key enterprise systems. This role requires 8+ years of coding experience and expertis...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Join Microsoft's global Industry Solutions Engineering team as a Principal Software Engineer. Leverage your 8+ years of coding expertise in C#, Java, Python, or similar to solve complex customer challenges with cloud-based solutions. You will lead design, mentor engineers, and drive innovation di...
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United States , Multiple Locations
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Lead the architecture of Microsoft's global, enterprise-scale Responsible AI infrastructure in Redmond. You will build high-availability systems for LLM hosting, inference orchestration, and agentic workflows. This role requires deep expertise in distributed systems, backend engineering, and AI l...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Shape the future of AI evaluation at Microsoft. As a Principal Software Engineer in Redmond, you'll build scalable, reliable platforms to measure M365's AI impact for millions. Lead technical design, mentor teams, and drive quality using data. Requires 6+ years' experience in C++, C#, Python, or ...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Software Engineer, Principal
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Seeking a Principal Software Engineer in Bedford to support critical Command, Control, and Battle Management (C3BM) programs. This role requires a Top Secret/SCI clearance, 20+ years of experience, and expertise in the full DoD software development lifecycle. Join our team to develop resilient sy...
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United States , Bedford
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120506.00 - 145000.00 USD / Year
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DCS Corporation
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Principal Software Engineer - Azure Key Vault
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Lead the development of critical security infrastructure as a Principal Software Engineer for Azure Key Vault in Redmond. This role requires 8+ years of experience in C, C++, C#, or Python and expertise in distributed cloud services. You will design resilient systems to protect digital assets in ...
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United States , Redmond
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163000.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Join Microsoft's global Industry Solutions Engineering team as a Principal Software Engineer. Leverage your 8+ years of coding expertise in C#, Java, Python, or similar to solve complex customer challenges with cloud-based solutions. This role involves collaborative innovation, travel up to 25%, ...
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United States , Multiple Locations
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163000.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer, CoreAI
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Lead the development of Azure's foundational GPU infrastructure for large-scale AI training and inference. Design and build high-performance, reliable systems at the intersection of virtualization, containers, and cloud platforms. This senior role in Redmond requires deep expertise in systems sof...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Lead the design of scalable infrastructure for next-gen security solutions at Palo Alto Networks. This Santa Clara-based role requires deep expertise in Red Hat OpenShift, AI/ML hardware, and automation with Ansible/Pulumi. Ensure 99.99% uptime by architecting resilient systems and automating dep...
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United States , Santa Clara
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147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Software Automation Test Engineer
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Lead AI-driven quality transformation as a Principal Software Automation Test Engineer in Santa Clara. Design autonomous QA workflows using AI/ML and LLMs to achieve unprecedented test coverage for Prisma Access. Bring 10+ years of automation expertise in Python/Go, cybersecurity, and cloud netwo...
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United States , Santa Clara
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147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Software Engineer
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Lead Linux security projects as a Principal Software Engineer, tackling deep OS-level vulnerabilities. This role requires 15+ years of experience, expertise in Rust/Java/C/C++, and Linux kernel knowledge. Join a top technical team in Columbia, Morrisville, or Danbury, with high autonomy and a foc...
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United States , Columbia; Morrisville; Danbury
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Not provided
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Owl Cyber Defense
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Senior and Principal Software Engineer - Core AI
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Join Microsoft's Core AI team in Redmond to build the foundational Observability platform for next-gen AI applications. As a Senior or Principal Software Engineer, you'll design and deliver large-scale AI services for monitoring and optimizing agent performance. This role requires strong coding s...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer - Security Architect
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Join Microsoft's Cloud & AI organization as a Principal Software Engineer - Security Architect in Redmond. You will provide vision and leadership for securing identity systems across the Microsoft estate. This role requires 8+ years of coding experience and involves hands-on design, architecture,...
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United States , Redmond
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Salary
163000.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Engineer Software
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Lead the development of next-generation cloud security solutions as a Principal Software Engineer in Santa Clara. This role requires 10+ years of experience building scalable, cloud-native systems on AWS/GCP/Azure, with strong Python/Go/Java skills. You will provide hands-on technical leadership ...
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United States , Santa Clara
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Software Engineer
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Join Microsoft's Customer Experience Engineering team as a Principal Software Engineer. This hands-on role involves working directly with strategic Azure customers and contributing to a core observability service. You'll need 6+ years of coding experience in languages like C# or Python and a back...
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United States , Multiple Locations
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer - CoreAI Model Inference & Serving
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Shape the future of AI inference at scale as a Principal Software Engineer in Microsoft's CoreAI team. Design and build high-performance, low-latency serving systems for leading LLMs like OpenAI and Mistral. This hands-on technical leadership role in Redmond drives innovation on Azure's foundatio...
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United States , Redmond
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Lead the AI-driven transformation of developer tools as a Principal Software Engineer in Redmond. Architect scalable systems and mentor teams to build next-gen M365 services. Requires 6+ years of experience with C++, C#, Java, or Python and a passion for AI innovation.
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United States , Redmond
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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer - ADEM Agent (Client/Endpoint Focus)
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Lead the architectural vision for the ADEM Agent as a Principal Software Engineer. Design and build high-performance, resource-efficient endpoint software for Windows, macOS, and Linux using Rust/Go. Tackle complex challenges in scale and security for a global client base from Santa Clara.
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United States , Santa Clara
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks Italia
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About the Principal Software Engineer role

Explore the pinnacle of a technical career with Principal Software Engineer jobs. This senior-level role represents the apex of individual contributor tracks, where technical mastery converges with strategic leadership. A Principal Software Engineer is not just a senior coder; they are the visionary architects and technical pillars of an organization, responsible for setting long-term technological direction and solving the most complex, large-scale challenges. Their work ensures that engineering efforts align with overarching business goals, creating robust, scalable, and future-proof systems.

Professionals in these roles typically shoulder a broad and impactful set of responsibilities. Central to their function is leading the architectural vision for major systems or entire platforms. They define the technical standards, select core technologies, and make critical decisions on system design with a focus on scalability, reliability, security, and performance. A significant part of their day involves deep collaboration, not only mentoring senior and junior engineers but also partnering with product managers, senior management, and other stakeholders to shape the technology roadmap. They are often the go-to experts for de-risking projects, conducting proof-of-concepts for new technologies, and providing technical guidance across multiple teams. Furthermore, they champion engineering excellence by driving initiatives around agile methodologies, CI/CD pipelines, DevOps practices, and robust quality assurance.

The typical skill set for a Principal Software Engineer is extensive and deep. A common requirement is 10+ years of progressive experience in software development, demonstrating a proven track record of designing, delivering, and maintaining complex, consumer-facing or enterprise-level systems. Expertise in modern technology stacks is essential, often including proficiency in languages like Java, Kotlin, C#, Python, or Go, and familiarity with front-end frameworks like React or Angular. A deep, practical understanding of distributed systems, cloud-native architectures (on platforms like AWS, Azure, or GCP), and containerization technologies like Docker and Kubernetes is standard. They are expected to be experts in API design, data modeling, and often, event-driven architectures using tools like Kafka. Beyond pure technical acumen, exceptional soft skills are non-negotiable. This includes superior communication abilities to articulate complex technical concepts to diverse audiences, strong leadership and mentorship capabilities, and outstanding analytical and problem-solving skills. While a Bachelor's degree in Computer Science is common, equivalent industry experience is often highly valued.

Ultimately, Principal Software Engineer jobs are for those who want to leave a lasting imprint on a company's technology. They are the strategic thinkers and technical pioneers who build the foundations upon which products and services thrive, making them one of the most critical and respected roles in the technology industry. If you are ready to guide technical strategy and mentor the next generation of engineers, exploring Principal Software Engineer jobs is your next career step.