> Markdown version of [/jobs/ext/4620912-principal-software-engineer](https://www.wearedevelopers.com/jobs/ext/4620912-principal-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - **Company:** Lambda Inc. - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Systems Engineering, Cloud Computing, Computer Networks, Distributed Systems, InfiniBand, Network Architecture, Performance Tuning, Remote Direct Memory Access, Data Center Networking - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25304_8cd923dbce91b54416f9f73de73282bf ## About the Role Requirements: The role requires 8+ years of experience in cloud computing, systems engineering, and large-scale network infrastructure. Candidates must have a proven track record of designing and operating production-scale software-defined networking services and distributed systems., * Cloud computing * Systems engineering * Network infrastructure * Data center networking * Distributed systems * Software defined networking * HPC networking * AI networking * RoCEv2 * InfiniBand * GPUDirect RDMA * Performance optimization * Scalability * Enterprise architecture * Technical strategy * Mentorship