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Principal Engineer United States Jobs

820 Job Offers

Principal Software Engineer, CoreAI
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Principal Software Engineer, CoreAI – Redmond, WA. Lead the architecture of cloud-scale platform services and data infrastructure powering AI product experiences. Requires a Bachelor's in CS and 6+ years coding in C++, C#, Java, or Python. Drive operational excellence, mentor engineers, and solve...
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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 sought to lead architecture and development of scalable compute platforms, workflow, and observability systems for a systematic asset manager. Requires 8+ years in Python, 4+ years leading large-scale system design, and 3+ years in distributed systems and AWS cloud-nat...
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United States, Massachusetts
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200000.00 - 250000.00 USD / Year
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Apollo Solutions
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Principal Software Engineer
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Principal Software Engineer role on Microsoft’s M365 Evaluation Platform Team, shaping AI feedback loops for millions of users. You’ll build scalable, agile tools for model fine-tuning, experiments, and metrics in Redmond, WA. Requires 6+ years coding in C++, C#, Python, or Java with a CS degree....
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Mechanical Design Engineer, Industrial Enclosures
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Enphase Energy seeks a Principal Mechanical Design Engineer to architect enclosure systems for a Solid State Transformer in Austin, TX. You will lead structural FEA, ingress protection, and corrosion strategies for large-scale electrical equipment. Requires 15+ years of experience, deep enclosure...
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150000.00 - 210000.00 USD / Year
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Enphase Energy
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Principal Data Platform Engineer Vice President
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Principal Data Platform Engineer VP role in Irving or Jacksonville, US. Leverage 8+ years of big data expertise to architect scalable ETL solutions using Python, PySpark, and the Hadoop ecosystem. Lead high-impact data platform development, mentor teams, and drive innovation. Enjoy comprehensive ...
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Location
United States, Irving, Jacksonville
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Salary
125760.00 - 188640.00 USD / Year
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Citi
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Principal Interconnect Development Engineer
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Principal Interconnect Development Engineer sought to drive next-gen high-speed interconnect solutions for network switches and routers. This individual contributor role demands deep industry expertise, including patents and conference leadership, to influence roadmaps and validate pre-NPI techno...
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174000.00 - 352500.00 USD / Year
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Hewlett Packard Enterprise
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Principal Silicon Design Verification Engineer
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Principal Silicon Design Verification Engineer sought to validate cutting-edge DPU silicon in Santa Clara. You will lead pre-silicon SoC verification using UVM/C, develop test plans, and debug complex designs for datacenter solutions. Requires a Doctorate or Master’s in EE/CE with 3-6+ years of e...
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142800.00 - 304200.00 USD / Year
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Microsoft Corporation
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Sr Principal Electrical Engineer
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Senior Principal Electrical Engineer sought to lead innovative electrical design for medication delivery monitoring and sensing products in Round Lake, US. Requires a Bachelor’s in Electrical Engineering and 10+ years of experience in electromechanical hardware development, ideally in medical dev...
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128000.00 - 176000.00 USD / Year
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Baxter
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Principal Network Simulation Engineer - VLSI
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Hewlett Packard Enterprise seeks a Principal Network Simulation Engineer (VLSI) for a remote role in the US. You will develop C++ simulation models for NICs, switches, and system architectures, using Python for performance analysis. Requires 10+ years' experience, a degree in Electrical/Computer ...
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174000.00 - 352500.00 USD / Year
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Hewlett Packard Enterprise
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Principal Quantum Engineer - Readout
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Lead the design and testing of scalable readout systems for topological qubits at Microsoft Quantum in Redmond. This Principal Quantum Engineer role requires a PhD or equivalent experience in Physics/Engineering, with expertise in RF readout techniques. You will drive innovation in an AI-first en...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer Manager, CoreAI
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Lead the future of AI as a Principal Software Engineer Manager on Microsoft’s CoreAI Agents Platform in Redmond. You will manage and coach engineering teams, drive strategic clarity, and build foundational platform components for generative AI applications. Requires a BS in CS, 8+ years of coding...
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165600.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Analog & CAD Engineer
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Principal Analog & CAD Engineer at Microsoft Quantum in Redmond, US. Drive cryo-CMOS ASIC development for scalable quantum computers. Lead foundry audits, PDK creation, and analog design for cryo temperatures. Requires deep expertise in CAD tool flows and semiconductor process engineering. Join a...
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142800.00 - 304200.00 USD / Year
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Microsoft Corporation
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Principal ML Systems Engineer, Data Platform (Autonomous Vehicles)
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Principal ML Systems Engineer needed to architect the next-gen distributed data platform for autonomous vehicles. You will own end-to-end data platform strategy, leveraging GCP, Spark, and Beam. Requires 10+ years in distributed systems, expert-level Java/C++/Python, and deep ML lifecycle knowled...
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Location
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233400.00 - 339650.00 USD / Year
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General Motors
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Principal Substation Engineer
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Principal Substation Engineer needed for a long-term contract with a major renewable energy client in Juno Beach, FL. You will lead high-voltage substation projects from conception through commissioning, requiring 7+ years of design experience and a bias for action. Key responsibilities include t...
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Airswift Sweden
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Principal Software Engineer (CDSS Cloud Services)
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Principal Software Engineer (CDSS Cloud Services) sought to design and deploy AI-driven, cloud-native security solutions in Santa Clara. You will build large-scale distributed systems, develop AI agents with LangChain or CrewAI, and code in GoLang or Python. Lead end-to-end projects on Kubernetes...
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147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Engineer Software (Prisma AIRS Backend)
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Principal Backend Engineer for Prisma AIRS at Palo Alto Networks, Seattle. Design and build scalable distributed systems for the world’s most comprehensive AI security platform. Requires 8+ years in Go, Java, or Python, with cloud and database expertise. Join a team shaping AI security, with RSUs...
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Principal Systems Engineer
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Columbia Technology Partners seeks a Principal Systems Engineer to lead engineering and sustainment of mission-critical FORNSAT and RF-enabled systems. This senior role requires an active Security Clearance, DOD 8570 certification, and 20+ years of experience in complex Linux, virtualization, and...
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United States, Annapolis Junction
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Salary
190000.00 - 225000.00 USD / Year
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Columbia Technology Partners
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Principal Systems Safety Engineer
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Principal Systems Safety Engineer sought in Phoenix, AZ to lead safety strategies for advanced integrated avionics platforms. Requires a Bachelor's in Engineering, 6+ years in commercial avionics, and expertise in SAE/ARP 4761 & 4754A. Drive hazard analyses, fault tree analysis, and system certif...
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Real Time Consulting
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Principal Software Engineer - Microsoft AI Search
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Principal Software Engineer sought for Microsoft AI Search in Redmond. Drive technical direction for AI-powered image search, integrating LLMs and multimodal AI to deliver intelligent visual experiences at global scale. Requires 6+ years coding in C++, Python, or Java with a Bachelor's in CS. Own...
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142800.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Controls Engineer
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Principal Controls Engineer sought in Marion, US, to drive life-saving innovations at Baxter. Requires 7+ years’ experience with Allen-Bradley PLCs, Fanuc/Yaskawa robotics, and Cognex/Keyence vision systems. Lead automation projects, ensure regulatory compliance, and optimize manufacturing proces...
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Salary
112000.00 - 154000.00 USD / Year
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Baxter
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Until further notice

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.