Software Engineer, Principal Jobs

Join Microsoft Quantum in Redmond to pioneer the world's first scalable commercial quantum computer. As a Principal Software Engineer, you will design and implement core software and firmware subsystems at the intersection of AI, cloud, and quantum computing. This role requires a PhD/Master's in ...

Lead large-scale data infrastructure projects as a Principal Software Engineer in Redmond. Utilize your 8+ years of coding expertise in C++, Java, or Python to build high-availability services with Azure Data Lake and COSMOS. Solve ambiguous problems with world-class teams, directly impacting maj...

Lead software development and DevOps strategy as a Principal Engineer in Hyderabad. Architect high-scale, cloud-native systems using Java, SpringBoot, and microservices on Azure/AWS/GCP. Guide a team to deliver PepsiCo's digital products, partnering with UX, product, and IT teams to drive transfo...

Join Microsoft Azure's AI/HPC team to build and operate world-leading cloud supercomputers. As a Principal Engineer, you'll be the technical authority for InfiniBand and GPU fabric operations, ensuring reliability for frontier AI training. This role requires deep expertise in large-scale HPC/AI i...

Lead the development of AI-powered employee self-service experiences as a Principal Software Engineer in Redmond. You will design extensibility features for Microsoft Copilot Studio and BizChat, integrating with key enterprise systems. This role requires 8+ years of coding experience and expertis...

Join Microsoft's global Industry Solutions Engineering team as a Principal Software Engineer. Leverage your 8+ years of coding expertise in C#, Java, Python, or similar to solve complex customer challenges with cloud-based solutions. You will lead design, mentor engineers, and drive innovation di...

Lead the evolution of the .NET Garbage Collector, impacting millions of global workloads. This principal role requires deep expertise in runtime internals, memory management, and C++/C# systems programming. You will architect performance enhancements and mentor engineers. Based in the Czech Repub...

Lead the architecture of Microsoft's global, enterprise-scale Responsible AI infrastructure in Redmond. You will build high-availability systems for LLM hosting, inference orchestration, and agentic workflows. This role requires deep expertise in distributed systems, backend engineering, and AI l...

Shape the future of AI evaluation at Microsoft. As a Principal Software Engineer in Redmond, you'll build scalable, reliable platforms to measure M365's AI impact for millions. Lead technical design, mentor teams, and drive quality using data. Requires 6+ years' experience in C++, C#, Python, or ...

Seeking a Principal Software Engineer in Bedford to support critical Command, Control, and Battle Management (C3BM) programs. This role requires a Top Secret/SCI clearance, 20+ years of experience, and expertise in the full DoD software development lifecycle. Join our team to develop resilient sy...

Join Microsoft's Defender for Office team in Hyderabad as a Principal Software Engineer. Architect post-breach security systems and Agentic AI platforms to protect against advanced threats. Leverage your 8+ years of experience in distributed systems, cloud services, and languages like C# or Pytho...

Lead the design of secure, large-scale cloud infrastructure at Microsoft Security in Bangalore. This principal engineering role requires 13+ years of experience, deep expertise in distributed systems (C++, C#, Python), and a focus on data governance. You will architect critical platforms, set tec...

Lead the development of critical security infrastructure as a Principal Software Engineer for Azure Key Vault in Redmond. This role requires 8+ years of experience in C, C++, C#, or Python and expertise in distributed cloud services. You will design resilient systems to protect digital assets in ...

Join Microsoft's global Industry Solutions Engineering team as a Principal Software Engineer. Leverage your 8+ years of coding expertise in C#, Java, Python, or similar to solve complex customer challenges with cloud-based solutions. This role involves collaborative innovation, travel up to 25%, ...

Lead the development of Azure's foundational GPU infrastructure for large-scale AI training and inference. Design and build high-performance, reliable systems at the intersection of virtualization, containers, and cloud platforms. This senior role in Redmond requires deep expertise in systems sof...

Lead the design of scalable infrastructure for next-gen security solutions at Palo Alto Networks. This Santa Clara-based role requires deep expertise in Red Hat OpenShift, AI/ML hardware, and automation with Ansible/Pulumi. Ensure 99.99% uptime by architecting resilient systems and automating dep...

Lead the development of innovative browser extensions and client-side software for Palo Alto Networks' ADEM platform. This Santa Clara-based role requires expert JavaScript/TypeScript skills and experience with AI-powered dev tools. You'll design scalable systems, leveraging your deep knowledge o...

Lead the architecture of a secure, Chromium-based enterprise browser in Tel Aviv. As a Principal Software Engineer, leverage your 8+ years of C++ mastery to solve complex performance and multi-threaded challenges. Drive innovation, mentor a talented team, and set new standards in browser security...

Join our core team in Warsaw as a Principal Software Development Engineer. You will research, prototype, and optimize ML algorithms for GPU deployment, focusing on graphics and quantization. We seek an expert in Python/PyTorch, C/C++, and ML pipelines, passionate about cutting-edge hardware. Coll...

Join Microsoft's AI frontier as a Principal Software Engineer in Beijing. Design and scale the secure, high-performance backend platform powering Microsoft Copilot. Leverage 6+ years of platform engineering experience with cloud infrastructure (Azure/AWS/GCP) and technologies like Kubernetes. Col...