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Principal Engineer Jobs

1624 Job Offers

Principal Software Engineer
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Principal Software Engineer role on Microsoft’s Azure AI Core team in Mountain View, CA. Design and build scalable, high-performance AI systems for real-time audio, image, and video generation. Requires 6+ years in distributed systems, API design, and AI/ML solutions with C#, Python, or Java. Joi...
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United States , Mountain View
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139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Geotechnical Engineer
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Principal Geotechnical Engineer sought for London-based role tackling complex subsea oil & gas challenges. Requires 10+ years in detailed design with SURF contractors, expertise in Plaxis 2D/3D, SLOPE/W, and standards like API-RP-2GEO. Lead innovative solutions, influence project strategy, and co...
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United Kingdom , London
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Not provided
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McDermott
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Senior Principal Electrical Engineer
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Senior Principal Electrical Engineer sought by Baxter in Round Lake, IL to lead embedded electronics design for life-saving medical devices. Requires 10+ years in electromechanical hardware, analog/digital circuit expertise, and Altium proficiency. Drive EMI/EMC compliance, mentor teams, and own ...
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United States , Round Lake
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128000.00 - 176000.00 USD / Year
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Baxter
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Sr. Principal Engineer, PDO & Verification
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Seeking a Sr. Principal Engineer for PDO & Verification in Raleigh, NC. Lead the design and development of medical device systems and digital platforms, ensuring FDA and ISO 14971 compliance. Requires a Bachelor’s in Electronics Engineering with 8+ years of experience in system requirements, risk...
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United States , Raleigh
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144000.00 - 216000.00 USD / Year
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Baxter
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Principal Software Engineer
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Principal Software Engineer role at Microsoft in Mountain View, CA, driving AI-first architecture for Power Platform and Dynamics 365. You will design high-scale distributed systems on Linux/Kubernetes using Python and FastAPI, lead incident response, and ensure global reliability. Requires 6+ ye...
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United States , Mountain View
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139900.00 - 304200.00 USD / Year
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Microsoft Corporation
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Principal Engineer
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Principal Engineer role leading the Everyday Rewards tribe in Sydney, blending hands-on technical delivery with architectural strategy across multiple squads. Requires 10+ years in .NET, GraphQL, Node.js, GCP/Azure, and microservices. Drive engineering standards, solve complex distributed systems...
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Australia , Sydney
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Not provided
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Woolworths Supermarkets
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HVAC Principal Design Engineer
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Seeking a Principal HVAC Design Engineer in Greenville to lead complex projects for federal clients. This role requires 15+ years of mechanical engineering experience, U.S. citizenship, and advanced knowledge of DOE codes. We offer a full benefits package and the chance to work on critical clean ...
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United States , Greenville
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Not provided
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Navarro Inc
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Principal Software Engineer, CoreAI
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Lead the development of Microsoft's CoreAI platform as a Principal Software Engineer in Redmond. Architect scalable, cloud-native systems for next-gen AI agents and foundational AI services. Requires 6+ years of experience with C++, C#, Python, or Java. Shape the product vision and drive engineer...
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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 AI agent platforms within Microsoft's Copilot Studio in Redmond. This Principal Software Engineer role requires 6+ years of experience in C#, Java, Python, or similar. You will drive architecture for Digital Workers, collaborating across Azure and Power Platform teams ...
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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 UX Engineer
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Lead AI-driven product innovation as a Principal UX Engineer in Redmond. Shape how AI integrates into the entire product lifecycle, from design to code. You'll build scalable tooling, set standards, and mentor teams. Requires 8+ years in product design/development and expertise in front-end tech ...
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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 Full Stack Engineer
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Lead innovative digital solutions as a Principal Full Stack Engineer at Fidelity in Smithfield. Utilize 8+ years of experience with Java, Angular, and microservices to architect scalable applications. Mentor a scrum team in delivering outstanding user experiences for equity compensation services....
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United States , Smithfield
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Not provided
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Fidelity Investments
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Principal Software Engineer - CoreAI
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Lead the future of AI-powered software testing as a Principal Software Engineer on Microsoft's Playwright team. Design and implement AI-native capabilities for the core automation framework, integrating with GitHub and VS Code. This Redmond-based role requires deep expertise in AI/LLM models, bro...
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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 Rust Engineer
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Lead the development of a secure DeFi yield generation platform as a Principal Rust Engineer. Design low-latency trading systems and mentor engineers using modern practices like CI/CD. This role offers a competitive benefits package and is based in Jersey City, Merrimack, or Westlake.
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United States , Jersey City; Merrimack; Westlake
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107000.00 - 216000.00 USD / Year
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Fidelity Investments
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Principal Software Engineer
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Lead the design of multi-tenant enterprise platforms for Microsoft's Dynamics 365 suite in Redmond. This principal role requires 6+ years of coding expertise in C#, Java, or Python. Drive product improvements and automate solutions within a leading SaaS environment, collaborating on innovative bu...
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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 Site Reliability Engineer
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Join Fidelity as a Principal Site Reliability Engineer in Westlake or Merrimack. You will define reliability strategy and build highly resilient, automated cloud platforms at scale. We seek an expert in AWS, Kubernetes, and Python to reduce toil and coach teams on best practices.
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United States , Westlake; Merrimack
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Fidelity Investments
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Principal Software Engineer - CoreAI
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Lead the future of AI-powered search as a Principal Software Engineer at Microsoft Azure AI in Redmond. Shape end-to-end developer experiences for Azure AI Search, turning ambiguous needs into scalable, reliable features. Leverage 6+ years of cloud service expertise and technical leadership to dr...
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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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Cleared Senior/ Principal Computing Infrastructure Engineer
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Seeking a Cleared Senior/Principal Computing Infrastructure Engineer in Albuquerque. Perform full lifecycle management of servers, storage, and cloud systems. Requires a DOE Q clearance, expertise in Linux/Windows, scripting (Python), and tools like Ansible. Enjoy impactful work, a 9/80 schedule,...
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United States , Albuquerque
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87400.00 - 199700.00 USD / Year
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Sandia National Laboratories
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Cleared senior principal lead r&d mechanical systems engineer
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Lead the mechanical systems design for critical national security flight test programs. This senior role requires an active DOE Q or DoD TS clearance and a background in R&D mechanical engineering. You will guide teams through design, assembly, and testing in a collaborative environment. The posi...
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United States , Livermore
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139900.00 - 280600.00 USD / Year
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Sandia National Laboratories
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Principal Radar Modeling Engineer
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Seeking a Principal Radar Modeling Engineer in Columbia, MD. This role requires a US Citizen with an active Secret clearance, a technical degree, and 20+ years of sensor systems experience. You will lead simulation development for Navy/MDA programs using MATLAB/Python, offering competitive benefi...
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United States , Columbia
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170000.00 - 190000.00 USD / Year
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Astrion
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Principal Physical Design Engineer
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Join Microsoft's Silicon team as a Principal Physical Design Engineer. Lead physical design convergence and methodology for cloud infrastructure ASICs in Mountain View. This role requires extensive experience in PnR, timing closure, and tapeouts of complex designs. Utilize your expertise with EDA...
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United States , Mountain View
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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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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.