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Principal Software Engineer United States Jobs

441 Job Offers

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 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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Principal Full Stack Software Engineer
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Principal Full Stack Software Engineer sought for Fixed Income Technology’s Trading Services team in Merrimack, NH. You will design and develop scalable solutions using Java, SpringBoot, Angular, and Kafka while collaborating with UX and architecture teams. This role requires 10+ years of experie...
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United States , Merrimack
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Not provided
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Fidelity Investments
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Principal Python Software Engineer
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Principal Python Software Engineer sought for Fidelity Private Shares in Fidelity Labs. This hands-on role involves developing, testing, and supporting a platform for the startup ecosystem. Requires expertise in Python, CI/CD, and mentoring engineering talent. Join us in Westlake, TX, Jersey City...
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United States , Westlake, TX; Jersey City, NJ; Merrimack, NH; Smithfield, RI
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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 a next-generation, global-scale Real-Time Communications platform in Redmond. Utilize your expertise in Rust, C++, and Kubernetes to build high-performance distributed systems. This senior role demands 10+ years of experience in shipping reliable, containerized services. Shape ...
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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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Join Microsoft's global Industry Solutions Engineering team in Redmond. As a Principal Software Engineer, you'll solve complex customer challenges using cloud technologies like C#, Java, or Python. Lead design, mentor engineers, and innovate directly with clients. Requires a technical degree and ...
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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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Join Microsoft's Web Data Platform Team as a Principal Software Engineer in Redmond. Build cutting-edge batch and streaming systems at a massive scale, processing billions of documents daily to power Bing Search and AI training. Leverage your expertise in distributed systems and languages like C+...
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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 a full-stack team as a Principal Software Engineer in Glen Allen. Architect and deliver scalable solutions using .NET, Python, Angular, and Azure. Drive technical excellence, mentor engineers, and foster innovation. Enjoy comprehensive benefits including insurance, 401K match, and stock opti...
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United States , Glen Allen
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80.00 - 95.00 USD / Hour
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Apex Systems
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Principal Software Engineer
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Lead the future of AI development tooling at Microsoft in Redmond. As a Principal Software Engineer, you'll architect scalable frameworks for AI agent lifecycle, leveraging Azure and generative AI. Mentor global teams and shape developer experiences used by millions worldwide. Requires 6+ years o...
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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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Join Palo Alto Networks' Cortex Xpanse team as a Principal Software Engineer in Santa Clara. Design and build scalable backend services, APIs, and data pipelines for the Attack Surface Management platform. Leverage 7+ years of experience with Python/Java/Golang, cloud platforms, and CI/CD to proa...
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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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Principal Engineer Software (Wildfire)
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Join Palo Alto Networks as a Principal Software Engineer for the cutting-edge WildFire malware detection platform. Design, build, and scale cloud-native security infrastructure using Python, C, or Golang. This role in Santa Clara offers RSUs, a bonus, and the chance to protect customers from evol...
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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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Product Owner – Sr Principal Software Systems Engineer for Digital Applications
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Seeking a Senior Principal Product Owner to lead digital application development for Infusion Pump Platforms in Raleigh. You will translate customer and clinical insights into product features, managing backlogs in an Agile environment. This role requires expertise in regulated medical devices, c...
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United States , Raleigh
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128000.00 - 176000.00 USD / Year
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Baxter
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Principal Software Engineer
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Lead the architecture of planning systems for Microsoft's global cloud infrastructure. This principal engineering role in Redmond focuses on maximizing availability and minimizing waste using AI and software innovation. Requires a BS in CS (or equivalent) with 6+ years of coding experience in C++...
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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 Quant Software Engineer
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Lead quantitative software development for investment solutions in Boston. Utilize Python, Java, and AWS to build full-stack analytical platforms, applying advanced statistics and machine learning. Enjoy top-tier benefits including comprehensive healthcare, retirement plans, and generous PTO.
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United States , Boston
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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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Join Fidelity as a Principal Software Engineer in Jersey City. Design and develop high-volume regulatory reporting platforms using KDB+, Java, and Python. Lead agile teams, build resilient APIs, and enjoy top benefits like comprehensive healthcare and generous PTO.
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United States , Jersey City
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Salary
107000.00 - 216000.00 USD / Year
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Fidelity Investments
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Principal Software Engineer - Simulation Platform
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Lead the development of a cutting-edge AI chip simulation platform at Microsoft in Redmond. This principal role requires deep expertise in C++/Python systems programming and collaboration across hardware and AI research teams. You will design and deliver critical simulator tools for next-generati...
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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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Sr Principal Software Engineer (Wildfire - Backend)
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Lead the development of a cutting-edge, cloud-based security infrastructure at massive scale. As a Principal Software Engineer, you will architect scalable microservices and data pipelines in Python/Golang. This role in Santa Clara demands strong technical leadership and expertise in distributed ...
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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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Principal Software Engineer
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Lead the vision for Bing's core Web Data Platform as a Principal Software Engineer. Architect and build large-scale, high-performance systems powering AI solutions for billions of users. This senior role in Redmond requires 8+ years of experience in system architecture, microservices, and a deep ...
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United States , Redmond
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Salary
163000.00 - 296400.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer Manager
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Lead the Web Data Platform team at Microsoft in Redmond, building large-scale, AI-powered systems for Bing Search and AI training. This principal manager role requires 8+ years of engineering and 6+ in people management, with deep expertise in high-scale architecture and AI models. Provide hands-...
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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 Software Engineer - SONIC & SAI
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Lead the development of high-performance SAI/SONiC SDKs and networking platforms in Saratoga. This role requires deep expertise in SONiC, SAI, C/C++, and low-level system programming. You will design hardware abstraction layers and collaborate with embedded teams. We offer full medical benefits, ...
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United States , Saratoga
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Salary
210000.00 - 290000.00 USD / Year
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Piper Companies
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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.