Staff Network Software Engineer

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. 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 Network Software Engineer (NetSWE) to build software that makes network operations safe, scalable, and boring — even as we launch new data centers and expand fast. This is not a “write scripts for configs” role: you’ll build the tooling and services that sit between the network core (switches/ports/VLANs, traffic processors) and the cloud platform on top, using open source where it fits and building the missing pieces where it doesn’t. Your responsibilities will include: • Build and maintain services and tooling that automate the network lifecycle: day-0 provisioning, day-N changes, drift detection, and operational verification • Make network changes safe and transparent: CI/CD workflows, diff/review tooling, staged rollouts/rollbacks, audit trails, and guardrails • Develop observability systems that scale across many sites: telemetry pipelines, signal quality, and tooling that shortens incident investigations • Close “last mile” gaps between the network and the platform: integrate source-of-truth data, expose APIs, and build reliable automation around it • Collaborate closely with network engineers and SREs to turn real operational pain into product-quality tooling We expect you to have: • 5+ years of professional software engineering experience (or equivalent practical background) • Strong coding skills and ownership mindset: you can ship and operate reliable services • Proficiency in Go or readiness to switch; Python is also welcome (other languages can be useful for OSS debugging/fixes) • You don’t have to be Network expert but we expect you to have interest in infrastructure and/or network It will be an added bonus if you have: • Background in networking (ex-network engineer, CCNP/education, DC networking exposure) or strong interest and proven ability to learn fast • Experience building automation/infra tooling: CI/CD, IaC, testing/staging environments, or “network-as-code” style workflows • Low-level networking / datapath experience: eBPF/XDP, DPDK, kernel networking, traffic processing systems • Experience designing high-load services and observability platforms (metrics/logs/traces, alerting, regression detection) • Contributions to open source or experience extending/debugging OSS component