Senior Software Engineer, Observability

Nebius is a leading company in cloud infrastructure for the global AI economy, building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment. The Senior Software Engineer role involves designing, building, and owning backend systems that power metrics, monitor large-scale infrastructure, and develop a comprehensive infrastructure maintenance platform, requiring strong production experience and system design judgment.

Responsibilities:

• Design and build services and agents that provide deep visibility into large-scale server fleets and data center engineering systems
• Evolve metrics, aggregation, and alerting pipelines, with a focus on signal quality and reliability
• Design and operate maintenance and remediation systems that enable safe, predictable fleet-wide changes and keep infrastructure healthy
• Investigate production incidents hands-on, including on-host Linux debugging, and drive root-cause fixes
• Collaborate closely with hardware, networking, and data center operations teams to improve reliability

Requirements:

• 5+ years of professional software engineering experience
• Strong production experience with Python and Go, or the ability to ramp up quickly
• Solid Linux fundamentals and comfort debugging live systems
• Ability to write reliable, maintainable code and dig into complex, ambiguous problems
• Experience building and operating production systems at scale
• Ubuntu experience, including internal tooling and packaging workflows (e.g., building Debian packages)
• CCNA (Cisco Certified Network Associate) or equivalent networking experience