Software Engineer, Principal Jobs

Lead AI-powered cloud reliability as a Principal Software Engineer at Microsoft in Atlanta. Design scalable ML infrastructure and automation to enhance Azure's security and performance. Leverage your deep expertise in distributed systems and coding (C++, Python, etc.) to mentor teams and drive op...

Join Microsoft's Web Data Platform Team as a Principal Software Engineer in Redmond. Architect and scale the core web crawler processing tens of billions of URLs daily. Lead the containerization and next-gen development of this global, intelligent platform using C++, C#, or Python. Drive architec...

Lead data engineering initiatives at GitHub as a Principal Software Engineer. Design and build scalable data pipelines and robust models using languages like Go or Python. Provide technical leadership and mentor a distributed team, ensuring high-quality, maintainable systems. This remote role in ...

Lead the strategic direction of a massive-scale log search platform at Rapid7 in Dublin. As a Principal Software Engineer, you'll design systems handling petabytes of data daily using Java and AWS. This high-impact role requires deep technical expertise and a drive to solve complex problems for a...

Seeking a Principal Software Engineer with Top Secret/SCI clearance in Bedford. This role supports critical C3BM and ABMS programs, requiring 20+ years of DoD experience and full lifecycle software development expertise. Enjoy a comprehensive benefits package including medical, 401k, and ESOP whi...

Lead the technical strategy for a cutting-edge mobile platform (iOS, Android, React Native) in Noida. This principal role requires 10+ years of experience, expertise in mobile engineering, and API design. You will architect scalable apps, mentor engineers, and shape the future of mobile development.

Lead the technical strategy for an AI-first mobile authoring platform at Microsoft Power Platform. This senior role in Bangalore requires 12+ years of experience, expertise in iOS, Android, and React Native, and a focus on scalable architecture. Drive innovation and mentor teams to build cutting-...

Lead the architecture of cutting-edge cybersecurity solutions as a Principal Software Engineer at Microsoft's Israel R&D center. Design and build large-scale, resilient cloud services using Kubernetes and modern cloud-native technologies. This senior role in Tel Aviv/Herzliya requires 12+ years o...

Lead the technical vision for AI-powered learning experiences at Babbel in Berlin. As a Principal Fullstack Engineer, you'll architect scalable systems using TypeScript/AWS and integrate AI into core workflows. Drive impact across teams by setting standards, improving reliability, and exploring L...

Lead the development of intuitive, full-stack AI agent platforms at Microsoft CoreAI in Redmond. Architect and build cutting-edge UI experiences with React, TypeScript, and NextJS, integrating advanced LLMs. This principal role requires 6+ years of experience shaping scalable, enterprise-grade so...

Lead the architecture and live-site excellence of Microsoft 365 client deployment services in Redmond. You will build large-scale distributed systems for safe, data-driven release orchestration and automated recovery. This role requires strong technical engineering experience and a focus on relia...

Lead the evolution of Microsoft's Core AI platform as a Principal Software Engineer in Redmond. Drive architectural decisions for large-scale, intelligent agent systems, integrating cutting-edge generative AI. Provide technical leadership across the full SDLC, ensuring quality, security, and reli...

Join Microsoft's Real-Time Communications team in Redmond as a Principal Software Engineer. Build the unified AI infrastructure powering Teams and Copilot, processing millions of daily sessions. Design scalable services using C++, C#, or Python to enable real-time, intelligent collaboration. Driv...

Lead the transformation to AI-powered cloud operations as a Principal Software Engineering Manager at Microsoft in Redmond. You will build scalable ML infrastructure and platform-level tools to ensure Azure's reliability and security. This role requires deep technical expertise in distributed sys...

Lead cloud-based solution development for capital markets clients as a Principal Software Engineer. This global role requires 6+ years of coding expertise (C#, Java, Python, etc.) and experience with financial compliance regulations. You'll architect solutions alongside customers and internal tea...

Lead backend development for GitHub Copilot's core API platform. Design scalable, reliable distributed systems in the cloud to power global AI integrations. Provide technical leadership, ensuring high availability, performance, and robust operations. This principal role is based in the Czech Repu...

Join Palo Alto Networks as a Principal Software Engineer in Santa Clara. Design and build scalable, distributed backend services for the cutting-edge Prisma Access cloud security platform. Leverage your 8+ years of experience in Go/Python/Java and cloud infrastructure (AWS/GCP/Azure) to develop c...

Join our Cortex backend engineering group as a Principal Software Engineer in Santa Clara. You will lead the development of core products like XSOAR and XDR, using Go/Python in a microservices cloud environment. We seek an expert with 8+ years' experience to drive innovation and solve complex pro...

Lead performance optimization for cutting-edge AI models at Microsoft. As a Principal Software Engineer, you'll enhance inference speeds for OpenAI and other LLMs across the AI stack. This role in Redmond involves deep profiling, debugging, and optimization on CPUs/GPUs. Requires 6+ years with C+...

Lead firmware development for Microsoft's iconic Surface devices in Redmond. Utilize your 6+ years of experience in C/C++ and embedded systems, with a strong focus on Rust and security protocols. Drive the full software lifecycle, collaborating with hardware teams to deliver stable, secure, and i...