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Principal Engineer Jobs

1664 Job Offers

Principal Software Engineer
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Principal Software Engineer role in Redmond, WA, driving GPU inference optimization and LLM/SLM architecture for Microsoft’s AI monetization platform. You’ll accelerate deep learning inference across Copilot, Search, and Ads, bridging cutting-edge AI with business impact. Requires 8+ years in C++...
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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/ Senior Software Engineer - Identity Security
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Principal/Senior Software Engineer – Identity Security at Palo Alto Networks in Tel Aviv. Drive innovation securing identities across hybrid and SaaS landscapes using cloud-native tech (Kubernetes, Docker, AWS/GCP/Azure). Requires 5+ years backend experience, AI-assisted development skills, and a...
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Israel , Tel Aviv
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Not provided
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Palo Alto Networks Italia
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Principal / Senior Software Engineer - Identity Security
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Join Palo Alto Networks as a Principal/Senior Software Engineer in Tel Aviv, shaping the future of Identity Security. You'll architect scalable, cloud-native solutions using Kubernetes, Docker, and microservices to secure hybrid and SaaS landscapes. Leverage AI tools like Gemini and Claude to dri...
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Israel , Tel Aviv
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Palo Alto Networks
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Principal Software Engineer
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Principal Software Engineer sought by RX Global in Richmond, UK. Drive domain architecture, mentor senior engineers, and own technical roadmaps for high-impact systems. Requires deep expertise in distributed systems, cloud-native AWS solutions, and legacy modernisation. Lead through influence, ba...
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United Kingdom , Richmond
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RX Global
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Principal Software Engineer
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Principal Software Engineer at Microsoft Azure Data in Tokyo, Japan. Design and implement core PostgreSQL features, including planner, executor, and replication. Requires 6+ years of C/C++/C#/Java/Python experience and deep database internals knowledge. Join a world-class team building the data p...
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Japan , Tokyo
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Microsoft Corporation
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Principal Software Engineer
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Principal Software Engineer role in Redmond, WA, driving AI-powered operations for Microsoft Azure. You will design scalable ML infrastructure, embed automation, and enhance cloud reliability. Requires expertise in distributed systems, C#/Java/Python, and cloud-native architectures. Join a collab...
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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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Principal Software Engineer at Microsoft – join the Copilot Studio team in Redmond, WA to build high-scale, AI-powered low-code experiences. You’ll lead front-end architecture for intelligent agents used by millions, driving technical strategy and mentoring senior engineers. Requires 6+ years in ...
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United States , Redmond
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Microsoft Corporation
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Staff / Principal Machine Learning Engineer, Serving
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Staff / Principal Machine Learning Engineer role in Mountain View, CA, focused on inference optimization and model acceleration for agentic systems. You'll own full-cycle development of high-performance serving frameworks using vLLM, TRT-LLM, C++, CUDA, and distributed systems like Kubernetes. We...
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United States , Mountain View
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270000.00 - 500000.00 USD / Year
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Inworld AI
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Staff / Principal Machine Learning Engineer, Serving
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Inworld AI seeks a Staff/Principal Machine Learning Engineer to lead inference optimization for realtime multimodal models in Switzerland. You will drive model acceleration using quantization, speculative decoding, and frameworks like vLLM or TRT-LLM. Expertise in C++, CUDA, and distributed syste...
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Switzerland
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Inworld AI
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Principal Systems Engineer
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Principal Systems Engineer needed for a 12-month contract in Edinburgh or Newcastle. You will support radar system development by analyzing large datasets from rig and flight trials using MATLAB. Key requirements include V-model lifecycle expertise, safety-critical systems experience, and SC Clea...
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United Kingdom , Edinburgh
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65.00 - 70.00 GBP / Hour
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Morson Talent
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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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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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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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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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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
Expiration Date
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.