SeniorSoftwareEngineer,CoreSystems(Rust)

About PubNub PubNub is a San Francisco–based technology company that powers real-time interactive experiences that drive engagement, retention, and monetization. Our platform enables organizations to efficiently build, manage, and optimize real-time applications used by millions of people around the world. Founded in 2012, PubNub serves more than 2,000 companies globally, including Amazon, RingCentral, Gameloft, and DAZN. Our secure, low-latency platform scales worldwide, helping customers launch and enhance applications that engage users and deliver business results. Engineering teams at PubNub build and operate the systems behind our globally distributed platform. Our infrastructure processes trillions of transactions each month across 15+ data centers worldwide, enabling reliable, low-latency real-time experiences at scale. About the Role PubNub is looking for a Senior Software Engineer to join our Core team and help build and operate the foundational services behind our real-time platform. This is a senior individual contributor role focused on designing, building, and operating distributed systems in Rust. You'll work on services that power messaging, eventing, presence, storage, history, search, and fanout across our globally distributed platform. You'll help evolve systems that process trillions of transactions each month, with a focus on reliability, performance, observability, and operational excellence. Engineers on the Core team own services from development through production operations, including monitoring, incident response, and capacity planning. Key Responsibilities Build core distributed systems in Rust. Design scalable and fault-tolerant platform services. Develop messaging, storage, and eventing infrastructure. Improve system reliability and operational resilience. Own services from development through production operations. Create metrics, dashboards, alerts, and runbooks. Support incident response and capacity planning. Optimize latency, throug