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Principal Software Engineer United States Jobs

451 Job Offers

Principal Software Engineer
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Join Microsoft’s Hardware Security team in Redmond as a Principal Software Engineer. You will design low-level, code-to-metal security firmware for Azure, Windows, and Xbox, defending billions of devices. Requires a BS in CS, 6+ years in C/C++/Rust/Python, and expertise in secure systems. Lead in...
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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 – Azure Data (PostgreSQL AI). Design and lead core AI capabilities in PostgreSQL, including vector indexing and semantic query operators. Requires a Bachelor’s in CS and 6+ years of systems engineering experience with C, C++, or Python. Join Microsoft to build the data...
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United States , Multiple Locations
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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Product Owner – Sr Principal Software Systems Engineer for Digital Applications
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Seeking a Sr Principal Software Systems Engineer & Product Owner to lead groundbreaking digital health solutions in Raleigh. Drive product strategy for connected Infusion Pump Platforms and cloud-based applications (SaaS/PaaS). Leverage your Product Owner expertise and customer insights to manage...
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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 - Entra ID Security
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Principal Software Engineer role in Redmond, WA, focused on Entra ID Security at Microsoft. You will build and operate global-scale services to combat identity threats, designing agentic systems and applying AI for faster investigations. Requires a Bachelor's in CS, 6+ years coding in C++, C#, Ja...
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United States , Redmond
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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal Software Engineer, CoreAI FIT Agentic Systems
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Principal Software Engineer role on Microsoft’s CoreAI FIT Agentic Systems team, building the AI infrastructure for Azure. You will develop scalable infrastructure for training LLMs, SLMs, and agentic models, designing API orchestration layers with OpenAI. Requires 6+ years in C, C++, Python, 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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Software Engineer, Principal
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Principal Software Engineer needed in Bedford, MA to support C3BM’s critical Battle Network integration for the USAF and USSF. Requires a Top Secret/SCI clearance, 20+ years of experience, and expertise in full SDLC, IT systems, and software V&V. Join Agile teams to design, test, and deliver adva...
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United States , Bedford
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120506.00 - 145000.00 USD / Year
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DCS Corporation
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Principal Software Engineer, Engineering Effectiveness
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Principal Software Engineer, Engineering Effectiveness at General Motors in Austin, TX. Solve high-leverage engineering problems across software development, optimizing speed, cost, and usability. Requires 10+ years of experience, deep systems thinking, and a track record of scalable improvements...
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United States , Austin
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Salary
201600.00 - 360000.00 USD / Year
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General Motors
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Principal Software Engineer, CoreAI Workload Engines
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Principal Software Engineer role on Microsoft’s CoreAI Workload Engines team in Redmond, WA. You will optimize large-scale GPU inference for OpenAI and LLMs, driving performance, latency, and efficiency improvements. Requires 6+ years in C/C++/Python, deep performance analysis, and production inf...
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United States , Redmond
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139900.00 - 331200.00 USD / Year
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Microsoft Corporation
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Principal DeltaV PAS software Engineer
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Senior Principal DeltaV PAS Engineer needed for on-site commissioning in Allakaket, AK. Lead DCS testing, configuration, and loop checks independently. Requires expert-level DeltaV skills, including sequences, alarms, historian, and Live graphics. 14/14 rotation with 12-hour shifts; all travel an...
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United States , Allakaket
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Salary
100.00 - 130.00 USD / Hour
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Lorien
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Principal DeltaV SIS Software Engineer
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Senior Principal DeltaV SIS Software Engineer needed for on-site commissioning in Allakaket, AK. Lead testing, configuration, and loop checks from the DCS board, managing sequences, alarms, historian integration, and DeltaV Live graphics. Requires senior-level independence and 14-day on/off rotat...
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United States , Allakaket
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Salary
100.00 - 130.00 USD / Hour
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Lorien
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Sr. Principal Software Engineer - Layer 7
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Sr. Principal Software Engineer (Layer 7) sought to design and develop device identity solutions for next-gen firewalls in Santa Clara. Requires 7+ years of experience, C/Linux expertise, and skills in TCP/IP, microservices, Kubernetes, and databases. You will own critical components, drive innov...
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United States , Santa Clara
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Salary
170000.00 - 277000.00 USD / Year
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Palo Alto Networks
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Principal Software Engineer in Test (Automation & AI)
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Principal Software Engineer in Test (Automation & AI) sought for Palo Alto Networks in Santa Clara, CA. Drive AI-assisted test automation using LLMs (Claude, Gemini) and Python. Lead backend/frontend automation with Playwright, build CI/CD pipelines, and leverage Kubernetes on AWS/Azure/GCP. Requ...
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United States , Santa Clara
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Senior Principal Software Engineer — Layer 7 Security
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Senior Principal Software Engineer — Layer 7 Security role in Santa Clara, CA. Lead architecture and development of next-gen, high-performance distributed security systems. Requires 12+ years of experience, expert-level C and Go, deep networking and TCP/IP expertise. Drive innovation in mission-c...
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United States , Santa Clara
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Salary
147000.00 - 237500.00 USD / Year
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Palo Alto Networks
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Sr Principal Software Engineer (Quantum Security)
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Sr Principal Software Engineer (Quantum Security) role in Santa Clara, CA. You will lead the development of next-gen security solutions, focusing on Post-Quantum Cryptography (PQC) and SSL protocols for Palo Alto Networks' Strata Cloud Manager. Requires 10+ years in enterprise apps, cloud-native ...
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United States , Santa Clara
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Salary
170000.00 - 277000.00 USD / Year
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Palo Alto Networks Italia
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Principal Ai Software Engineer
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Principal AI Software Engineer at AMD in San Jose, US. Drive hardware-software co-design for next-gen GPU architectures and AI/ML software stacks. Lead performance engineering for large-scale models (LLMs, Diffusion) and collaborate with top hyperscalers. Join a culture of innovation to shape the...
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United States , San Jose
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Salary
240000.00 - 360000.00 USD / Year
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AMD
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Sr Principal Software Engineer (Quantum Security)
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Seeking a Sr Principal Software Engineer (Quantum Security) in Santa Clara, CA. You will lead the development of next-gen security solutions, focusing on Post-Quantum Cryptography (PQC) and SSL protocols. Requires 10+ years building large enterprise apps, deep cryptographic knowledge, and cloud-n...
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United States , Santa Clara
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Salary
170000.00 - 277000.00 USD / Year
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Palo Alto Networks
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Principal Python Software Engineer
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Principal Python Software Engineer sought by a growing Financial Services client in Boston (hybrid). Leverage 8+ years of Python/Django/Flask experience to lead design of large-scale, high-performance distributed systems on AWS. Drive cloud-native solutions, Infrastructure-as-Code (Terraform), an...
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United States , Boston
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Salary
220000.00 - 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 at Microsoft in Redmond, WA, driving innovation in AI agents within Copilot Studio. Lead design of scalable, secure platform capabilities for Digital Workers, leveraging Azure, M365, and Power Platform. Requires 6+ years engineering experience with C, C++, C#, Jav...
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United States , Redmond
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Salary
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 Security in Redmond, WA. Architect the next-generation Conditional Access engine processing millions of policy evaluations per second. Requires deep expertise in distributed systems, C#/.NET, identity protocols (OAuth2/OIDC), and Zero Trust principles. Dri...
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Location
United States , Redmond
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Salary
139900.00 - 274800.00 USD / Year
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Microsoft Corporation
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Principal AI Software Engineer
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Principal AI Software Engineer sought by AMD to lead OneROCm software stack innovation across Instinct, Radeon, and Ryzen platforms. This hands-on role requires deep expertise in GPU architectures, AI/ML full-stack development, and hardware/software co-design. Drive next-gen products in San Jose,...
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United States , San Jose
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Not provided
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AMD
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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.