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Principal Engineer Jobs

1765 Job Offers

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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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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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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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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110000.00 - 220000.00 USD / Year
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Walmart
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Senior / Principal Quantum Error Correction Engineer
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Join Microsoft Quantum in Copenhagen as a Senior/Principal Quantum Error Correction Engineer. You will design fault-tolerance infrastructure and advance error correction codes for scalable quantum systems. Requires a PhD/MS in STEM with software industry experience. Collaborate with a world-class...
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Microsoft Corporation
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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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143000.00 - 286000.00 USD / Year
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Walmart
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Principal Controls Engineer
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Principal Controls Engineer sought by Baxter in Marion, US, to drive automation excellence in life-saving medical device manufacturing. Requires 7+ years experience with Allen-Bradley PLCs, Fanuc/Yaskawa robotics, and vision systems. Lead continuous improvement, validation, and CAPA projects in a...
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112000.00 - 154000.00 USD / Year
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Baxter
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Principal Systems Engineer
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Principal Systems Engineer sought for R&D at Baxter in Skaneateles Falls, NY. Lead cross-functional teams in medical device development, translating customer needs into system-level requirements. Requires 5+ years experience, expertise in ISO 14971 and IEC 62304. Benefits include immediate medica...
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United States, Skaneateles Falls
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112000.00 - 154000.00 USD / Year
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Baxter
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Principal Software Engineer
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Join Microsoft’s ISE team in Sydney as a Principal Software Engineer. You’ll co-engineer high-scale solutions with customers, leveraging C, C++, C#, Java, or Python. Lead deep technical engagements, containerize workloads, and integrate AI to solve complex challenges. Enjoy a competitive package ...
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Microsoft Corporation
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Senior / Principal Civil Water Engineer
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Senior / Principal Civil Water Engineer sought to lead multi-disciplinary teams on landmark UK water infrastructure projects in Bristol. You will drive technical design for hydraulics, wastewater, and clean water systems, mentoring junior engineers. Enjoy flexible hybrid working, a competitive sa...
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Morson Talent
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Principal / Sr Staff Software Engineer (ITDR)
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Principal Software Engineer (ITDR) sought to design and build cutting-edge, high-scale systems using Angular, React, and Python on AWS. Requires 7+ years of SW development, deep expertise in modern frameworks, and strong TypeScript/RxJS skills. Lead infrastructure design, implement sophisticated ...
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Israel, Mulebbis
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Palo Alto Networks
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Principal Machine Learning Engineer - AV Labs
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Join Uber’s AV Labs as a Principal ML Engineer to lead Physical AI innovation in San Francisco or Sunnyvale. You will architect state-of-the-art autonomy algorithms and foundation models, solving the hardest long-tail data challenges in autonomous driving. Requires 10+ years in ML/Robotics, exper...
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302000.00 - 336000.00 USD / Year
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Uber
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Principal Service Reliability Engineer
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Lead reliability strategy for mission-critical, distributed systems as a Principal SRE in Redmond. Define SLOs/SLIs/error budgets, drive automation, and eliminate toil across enterprise-scale platforms. Requires 8+ years in software/network engineering or systems admin, with proven experience ope...
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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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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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Principal Software Engineer
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Principal Software Engineer role in Zürich, Switzerland, blending deep technical expertise with customer collaboration. You’ll code in C++, C#, Java, or Python, containerize workloads, and leverage AI to solve high-scale challenges. Join Microsoft’s ISE team to co-engineer solutions with senior s...
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer role in Amsterdam with Microsoft’s ISE team. You will co-engineer high-scale solutions with customers, leveraging AI and containerization. Requires 8+ years coding in C#, Python, or Java, plus executive-level customer advisory experience. Enjoy 25% travel, flexible wor...
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer sought by Microsoft’s ISE team in London to co-engineer high-scale solutions with customers. You will lead technical strategy, containerize workloads, and leverage AI to solve complex challenges. Requires deep coding expertise (C++, Python, etc.) and customer-facing ex...
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Microsoft Corporation
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Principal Opto-Mechanical Engineer
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Principal Opto-Mechanical Engineer sought in San Jose, CA to lead design and delivery of advanced opto-mechanical systems for next-gen e-beam technology. Requires MSc/PhD and 10+ years in optics, lasers, and precision motion. Drive technical roadmap, system integration, and validation from protot...
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177000.00 - 265500.00 USD / Year
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ASML
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Engineer Principal Specialist - Experimental Engineering for Aircraft and Ground Rigs
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Seeking a Principal Specialist in Experimental Engineering for Aircraft & Ground Rigs in Wichita, KS. Requires 20+ years of experience in ground/flight test engineering for new and derivative aircraft programs. Lead risk evaluation, define flight test instrumentation, and shape long-term experime...
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Bombardier
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Member Of Technical Staff, Principal Software Engineer - Windows Copilot
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Join Microsoft as a Principal Software Engineer on the Windows Copilot team in Redmond, WA. You will design and build next-gen AI features and secure platform services, leveraging C, C++, C#, or Python. This role requires 12+ years of experience and hands-on use of modern AI coding agents. Drive ...
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142800.00 - 331200.00 USD / Year
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Microsoft Corporation
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About the Principal Engineer role

Explore the pinnacle of technical leadership with Principal Engineer jobs. A Principal Engineer is a master-level technical expert and strategic leader within an engineering organization. This is not merely a senior role; it represents the apex of an individual contributor technical track, where influence, architectural vision, and deep expertise converge to shape the technological future of a company. Professionals in these roles are the go-to authorities for the most complex, high-impact challenges, setting technical standards and driving innovation across multiple teams or the entire organization.

The common responsibilities of a Principal Engineer are vast and critical to long-term success. Typically, they involve defining and driving the long-term technical strategy and architectural vision for major platforms or product suites. They are responsible for researching, prototyping, and selecting technologies that will scale to meet future business needs. A core part of their duties includes leading the design and implementation of complex, cross-functional systems, ensuring they are resilient, secure, and efficient. They serve as the ultimate escalation point for critical production issues, conducting deep-dive analysis and root cause investigations to resolve systemic problems. Furthermore, Principal Engineers have a significant mentorship and governance function, actively coaching senior and staff engineers, establishing best practices, and conducting rigorous code and design reviews to maintain exceptional quality across all engineering outputs. They are also key collaborators, working closely with engineering managers, product leaders, and enterprise architects to align technical execution with business objectives.

The typical skills and requirements for these high-level positions are extensive. A bachelor's or master's degree in computer science, engineering, or a related field is common, though equivalent demonstrable experience is often acceptable. Most roles require a minimum of 10+ years of progressive, hands-on software development or infrastructure engineering experience, with a significant portion spent in lead or architecture-focused positions. Essential technical skills include mastery of relevant programming languages and frameworks, profound knowledge of system design patterns and distributed architectures, and expertise in cloud platforms like AWS, Azure, or GCP. They must possess exceptional analytical and problem-solving abilities to deconstruct ambiguous, complex problems. Beyond technical prowess, superior soft skills are non-negotiable; this includes outstanding communication to articulate technical vision to both technical and non-technical stakeholders, proven leadership and influence without formal authority, and strategic business acumen. For those seeking to define technological frontiers and mentor the next generation of experts, Principal Engineer jobs offer a challenging and highly rewarding career path at the forefront of innovation.