Software Engineer, Principal Jobs

Lead the architecture of Microsoft's AI Web Data Platform, powering Bing Search and AI Grounding at an internet scale. This Principal Software Engineer role requires expertise in large-scale distributed systems (Spark, Kafka) and AI/ML to process billions of documents daily. Bring your technical ...

Lead the development of innovative AI-driven healthcare solutions in Boston. This Principal Software Engineer role requires 8+ years of experience, with deep expertise in Node.js, TypeScript, React, and AWS. Design scalable systems, mentor engineers, and enjoy comprehensive benefits including med...

Join a new internal startup as a Principal Python Engineer with LLM expertise. Design and build an intelligent AI platform to revolutionize developer experience for thousands. Integrate cutting-edge LLMs and AI agents into core workflows using Python. Enjoy a hybrid model from Kielce, Kraków, or ...

Lead the architecture of modern enterprise applications as a Principal Full Stack Engineer. Utilize your deep expertise in Java, Spring Boot, Node.js, and cloud technologies (AWS, Kubernetes) to guide engineering best practices. This role offers a full benefits package and is based in Smithfield,...

Lead high-performance AI runtime systems at Microsoft's CoreAI team in Redmond. Optimize large-scale LLM inferencing with deep C++ and distributed systems expertise. Build scalable cloud services for OpenAI models, focusing on latency and reliability. Requires 6+ years in systems programming and ...

Lead architectural vision and high-level design for major projects as a Principal Software Engineering Architect. This role requires 15+ years with Java, Oracle, and Springboot, plus leadership in mentoring teams and client relations. Enjoy competitive pay, comprehensive benefits, and flexible wo...

Seeking a Principal Software Engineer with Top Secret clearance for the C3BM Division in Bedford. This role requires 20+ years of DoD experience and full lifecycle software development expertise for critical battle management systems. We offer a comprehensive benefits package including medical, 4...

Lead architectural development for cybersecurity products as a Senior Principal Software Engineer at Rapid7 in Belfast. This role requires 12+ years of Java experience and expertise in designing complex, scalable enterprise software. You will drive technical strategy, foster innovation, and champ...

Lead the architecture of Azure's core compute platform as a Principal Software Engineer in Abu Dhabi. Design and build highly resilient, cloud-scale distributed systems that power Microsoft's global infrastructure. This hands-on role requires deep expertise in C/C++/C# and proven experience with ...

Lead the backbone of next-gen blockchain wallet infrastructure as a Principal Software Engineer. This New York-based or remote role requires 10+ years in backend engineering, mastery of TypeScript/Rust/Go, and deep cloud/AWS expertise. You'll architect scalable, secure systems, mentor senior engi...

Join Capital One in Bengaluru as a Principal Associate in Software Engineering. Utilize your 5+ years of experience with full stack technologies like Java, React, and AWS to build transformative cloud solutions. You'll collaborate in Agile teams to drive financial empowerment through innovative t...

Seeking a Principal Software Engineer with Top Secret clearance for the C3BM Division in Bedford. This role requires 20+ years of DoD experience, full lifecycle software development expertise, and IAT Level II certification. You will support critical battle management systems, enjoying robust ben...

Lead the development of secure, cloud-native platform services at Truveta in Seattle. This principal engineer role requires 10+ years of experience with Java/Python/C#, Kubernetes, and modern cloud platforms. You will design distributed systems and data pipelines while mentoring teams. We offer s...

Lead the development of cutting-edge ad rendering UX at Microsoft in Redmond. As a Principal Software Engineer, you'll architect versatile libraries and leverage data to optimize the full ads stack. This role requires 6+ years of coding experience in C++, C#, Java, or Python. Join a key team driv...

Lead the compiler upgrade strategy for Microsoft's Azure SQL database at the forefront of the AI data platform. This Principal Software Engineer role in Redmond demands deep expertise in C++, MSVC internals, and large-scale build systems. You will architect solutions across millions of lines of c...

Lead the technical vision for FreeWheel's Programmatic Demand platform as a Principal Software Engineer. This senior role requires 15+ years of experience building scalable distributed systems in Python/C++/Java/Go within the ad-tech/media industry. You will architect core features, mentor engine...

Lead firmware development for next-generation UFS validation hosts in Bangalore. This principal role requires 10+ years in embedded C/C++ and deep expertise in storage protocols (UFS, eMMC, PCIe). You will design, debug, and integrate systems, driving complex programs with high visibility and imp...

Lead Zalando's strategic React Native migration in Berlin. Tackle complex architectural challenges using Fabric, TurboModules, and JSI to build a high-performance platform for 50M+ users. Champion a performance-first culture with hybrid work, a great discount, and relocation support.