Staff / Senior Software Engineer (Agentic Search) - Runtime

Location: Zurich, Switzerland

Company

Nebius is building a full-stack AI cloud platform for data processing, model training, and production deployment, with infrastructure spanning compute, storage, networking, and applied AI.

What you will do

• Design, implement, and operate core runtime services for serving search queries at scale.
• Build and optimize query processing, retrieval orchestration, and response assembly under strict latency budgets.
• Develop systems that maintain predictable performance under high load and optimize CPU, memory, and data-access patterns.
• Define observability primitives including structured logs, metrics, traces, and latency breakdowns.
• Monitor throughput, latency, and resource usage while improving performance, reliability, and cost efficiency.
• Collaborate with indexing, ML, and product teams to integrate retrieval and ranking components and support controlled experiments.

Requirements

• 5+ years of experience as a software engineer working on production backend systems.
• Strong hands-on expertise in C++ or Rust for real-world, high-load services.
• Experience building and operating low-latency, user-facing systems handling thousands of requests per second.
• Systems-level understanding of CPU, memory, networking, and data access performance.
• Experience deploying, debugging, operating, and rolling back production code.
• Applicants must be authorized to work in Switzerland and provide proof of employment eligibility.

Nice to have

• Experience with DBMS internals, cloud infrastructure, high-load web applications, or large-scale APIs.
• Background in trading platforms, real-time data pipelines, low-level performance tuning, or hardware-level optimization.
• Open-source contributions, competitive programming, CTF participation, advanced technical programs, conference talks, or technical publications.

Culture & Benefits

• Competitive compensation and career growth opportunities.
• Learning opportunities, flexibility, and ownership.
• Collaborative and innovative international environment.
• Opportunity to work on impactful AI projects with experienced engineering teams.

Hiring process

• Coding interviews are part of the selection process.