Lead Site Reliability engineer - Network infrastructure - APAC

About Nebius: Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D. The Role We're looking for a Lead Site Reliability Engineer to build and run the fundamental part of Nebius in APAC: the Network, the infrastructure everything else depends on. We are at the early stage of our APAC expansion, so this is a hands-on role. You will define reliability targets, write automation and handle incidents yourself, with a high degree of independence from the European teams. As the region grows, you will build and lead the local SRE team. Your responsibilities will include: • Define and own reliability goals for network services and critical paths in the region (SLIs/SLOs, availability targets, error budgets where it makes sense) • Drive reliability improvements across the whole APAC network: not only services, but also site readiness, inter-site connectivity (DCI), and operational standards for new data centers • Own incident response for your areas, lead investigations/postmortems, and turn failures into durable fixes (not repeated firefighting); set up on-call and incident management practices for the region • Build and evolve observability: actionable metrics/logs/traces, alerting, and faster debug loops during and after incidents • Design safer change workflows: automation, CI/CD, test/staging environments, canarying, rollbacks, and auditability for network changes • Work closely with network engineers and platform teams in APAC and Europe to embed operability into designs and keep operations practical and fast • Hire, onboard and mentor the first SREs in the region and set the engineering bar for the team • Coordinate with European teams on handoffs and coverage across time zones We expect you to have: • 7+ years of experience in SRE / infrastructure engineering, including experience leading a team or acting as a technical lead with broad ownership of production systems • Strong production Linux fundamentals and a structured approach to debugging complex systems • Solid understanding of networking basics and how real networks fail (control plane vs data plane, latency/loss, failure domains, etc.) • Hands-on experience operating high-availability systems and improving them over time (not just "keeping lights on") • Ability to write and maintain software/automation (Go is common for us; Python is also welcome) • Experience with modern infrastructure tooling (e.g., IaC, CI/CD, container platforms) and comfort automating operational workflows • Ability to work independently in an early-stage environment and to build processes and a team from scratch • Willingness to stay hands-on while leading and growing a team It will be an added bonus if you have: • Experience with high-throughput traffic processing: load balancers, tunneling/decap, NAT64, or similar datapath-heavy systems • Low-level networking performance/debug background (eBPF/XDP, DPDK, perf/ftrace, kernel networking internals) • Experience building network-safe delivery pipelines (testing labs, staged rollouts, automated verification, drift detection) • Background with large-scale net