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Principal Software Engineer United States Jobs

441 Job Offers

Principal Research Software Engineer
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Join Microsoft Research as a Principal Research Software Engineer in Redmond, WA. Lead the AI Agentic Core Team to build AI-driven systems and platforms that accelerate research into real-world products. Requires a Bachelor's in CS and 6+ years coding in Python, Rust, or C++. Design agentic AI fr...
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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, Android
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Principal Software Engineer, Android role in Sunnyvale, CA. Lead Android development with 12+ years of experience, expert in Kotlin, mobile architecture, and CI/CD. Drive conversational AI and next-gen retail experiences at Walmart. Enjoy 401(k) match, stock purchase, paid parental leave, and PTO.
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United States , Sunnyvale
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Not provided
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Walmart
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Principal Software Engineer - Simulation & Digital Twin Architect
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Lead the software architecture for GM’s manufacturing Digital Twin & Simulation Platform as a Principal Engineer. This role requires 10+ years of experience, deep expertise in Unity, Unreal, or NVIDIA Omniverse, and strong C++/C# skills. You will own end-to-end architecture, integrate PLM/CAD/MES...
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United States , Austin;Warren;Mountain View
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Not provided
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General Motors
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Principal Software Engineer - Android platform/AOSP/AAOS
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Principal Software Engineer (Android/AOSP/AAOS) sought for a remote role based near Mountain View, CA. Lead the embedded Android platform strategy for GM Infotainment, driving architecture, innovation, and performance optimization. Requires 10+ years embedded experience, 5+ years with Android AOS...
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United States , Mountain View
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238700.00 - 302200.00 USD / Year
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General Motors
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Principal Software Engineer, Financial Data Platform & GenSearch Agent
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AlphaSense seeks a Principal Software Engineer to lead the development of its Financial Data Platform and GenSearch Agent. You will reduce latency in AI-powered financial answers, simplify legacy architecture, and improve cross-dataset querying. This role requires 12+ years of experience, experti...
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United States
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246000.00 - 339000.00 USD / Year
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AlphaSense
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Principal Software Automation/Test Engineer
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Principal Software Automation/Test Engineer at Palo Alto Networks: architect next-gen AI-powered tooling platforms for cloud security. Leverage Python, AI/ML (LLMs, agentic workflows), and cloud-native services (AWS, GCP, Azure) to drive intelligent automation. Design scalable frameworks using Py...
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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 Italia
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Principal Software Engineer ( Cloud Security )
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Principal Software Engineer (Cloud Security) sought to architect next-gen cloud security solutions in Santa Clara. You will design highly scalable distributed systems using Golang, Java, or Python, leveraging Docker, Kubernetes, and IaC tools. This role offers technical leadership on multi-cloud ...
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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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Senior Principal Software Engineer ( Cloud Infrastructure and Platform Engineering )
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Lead the evolution of AI-driven developer tools as a Staff Software Engineer at Palo Alto Networks in Santa Clara. Architect cloud-native infrastructure and platform engineering solutions using Kubernetes, GCP, and CI/CD to accelerate developer velocity. Requires 9+ years of experience, cross-org...
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United States , Santa Clara
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Not provided
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Palo Alto Networks
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Senior Principal Software Engineer
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Zuora seeks a Senior Principal Software Engineer in Foster City, CA to architect scalable, high-performance billing systems. You will lead design, deployment automation, and high-availability solutions for production environments. Requires 7+ years with AWS, Terraform, Java, and billing platform ...
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United States , Foster City
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213512.00 - 352000.00 USD / Year
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Zuora
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Principal Software Engineer
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Principal Software Engineer role on Microsoft’s AEGIS team, the security backbone of IC3. You will define technical strategy for multi-service security platforms and AI-driven vulnerability detection. Requires 6+ years coding in C, C++, C#, Java, JavaScript, or Python, plus a Bachelor’s in CS. Ba...
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United States , Redmond
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Senior Software Engineer / Principal Software Engineer - Copilot CLI
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Join GitHub and Microsoft CoreAI as a Senior/Principal Software Engineer on the Copilot CLI team, building the terminal-based coding agent that powers agentic experiences across the full development lifecycle. You will own critical product areas, design high-performance developer tooling, and set...
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United States , Redmond
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119800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer role on Microsoft’s Edge Web Platform team in Redmond, WA. You will shape core web primitives like DOM and HTML, drive web standards, and deliver high-performance, interoperable solutions across Chromium. Requires 6+ years in C, C++, or Rust with strong systems thinkin...
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United States , Redmond
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142800.00 - 304200.00 USD / Year
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Microsoft Corporation
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Principal, Software Engineer
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Join Walmart’s People Technology team as a Principal, Software Engineer in Bentonville, AR. Architect scalable, mission-critical systems driving modernization. Requires 10+ years in large-scale distributed systems, expertise in React, Node.js, Java, and cloud platforms (Azure/GCP). Lead engineers...
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United States , Bentonville
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110000.00 - 220000.00 USD / Year
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Walmart
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Principal DeltaV PAS Software Engineer
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Seeking a Principal DeltaV PAS Software Engineer for on-site commissioning in Allakaket, US. Lead DCS testing, configuration, and loop checks independently. Requires senior-level DeltaV expertise in sequences, alarms, historian integration, and Live graphics. Enjoy a 14/14 rotation with 12-hour s...
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United States , Allakaket
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100.00 USD / Hour
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Lorien
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Principal, Software Engineer
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Principal Software Engineer sought by Walmart Global Tech in Sunnyvale, CA to build the Wibey Web platform. You will design scalable front-end/back-end systems and integrate Gen-AI/LLM capabilities using MCP and A2A protocols. Requires 10+ years of experience, deep DevEX expertise, and proficienc...
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United States of America , Sunnyvale
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143000.00 - 286000.00 USD / Year
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Walmart
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Principal Software Engineer (Cloud Network and AI Security)
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Principal Software Engineer sought for Cloud Network & AI Security in Santa Clara. Leverage expertise in C, Python, Go, and low-level Linux systems to design virtualization features across Azure, AWS, and GCP. Requires deep knowledge of network security (stateful firewall, DPDK, XDP) and cloud ar...
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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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Sr Principal Software Engineer (C++ Prisma Browser)
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Join a world-class team in Santa Clara, CA as a Sr Principal Software Engineer (Prisma Browser). We seek a C++ virtuoso with 8+ years of endpoint development expertise to architect our Chromium-based enterprise browser. Lead critical features, master performance optimizations, and mentor engineer...
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United States , Santa Clara
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170000.00 - 277000.00 USD / Year
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Palo Alto Networks
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Senior Principal Engineer Software - Extension Platform (Prisma Browser)
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Senior Principal Engineer sought for Santa Clara HQ to lead Prisma Access Browser platform development. You will own complex features end-to-end, driving substantial product improvements in enterprise security. Requires 5+ years experience with TypeScript/JavaScript, backend tech, and CI/CD pipel...
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United States , Santa Clara
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170000.00 - 277000.00 USD / Year
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Palo Alto Networks
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Sr Principal Engineer Software- Backend (Prisma Browser)
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Senior Principal Backend Engineer sought for Santa Clara HQ to lead development of the Prisma Browser enterprise security solution. You will own end-to-end feature delivery, leveraging 5+ years in Go/C#/Java/C++ and cloud-native microservices on AWS/GCP/Azure. Drive innovation in multi-threaded p...
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United States , Santa Clara
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Not provided
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Palo Alto Networks
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Principal Software Engineer
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Principal Software Engineer needed onsite in Annapolis Junction, MD. You will lead full-stack development using JavaScript, React, Node.js, and Rust, driving mission-critical solutions for the Intelligence Community. Requires 12+ years of SWE experience, a TS/SCI with Full Scope Polygraph, and ex...
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United States , Annapolis Junction
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215000.00 - 250000.00 USD / Year
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Riverstone Enterprise Solutions
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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.