Senior Backend Engineer — Low-Latency AI Search

AI Chopping Block; Zürich; Vor Ort; CHF 140.000 - 200.000; Vollzeit

Benefits dieser Stelle

Competitive compensation

Career growth and learning

Flexibility and ownership

Collaborative and innovative culture

Impactful AI projects

International environment

Zusammenfassung

Nebius is building a fast, scalable search platform for agent-based AI consumption. We seek a Senior Software Engineer to craft low-latency runtime systems and optimize every layer from request handling to data access and response assembly.

You will work on high-throughput services under strict latency budgets, collaborate with ML and indexing teams, and help advance production readiness through observability and rigorous benchmarking.

Qualifikationen

• 5+ years of experience building production backend systems.
• Strong hands-on expertise in C++ or Rust for real-world, high-load services.
• Experience operating high-load, low-latency user-facing systems with thousands of RPS.
• Understanding of system-level performance across CPU, memory, networking, and data access.
• Experience deploying and debugging production code; able to roll back changes when needed.

Aufgaben

• Design, implement, and operate core runtime services for serving search queries at scale.
• Build and optimise request flows, including query processing, retrieval orchestration, and response assembly under strict latency budgets.
• Develop systems that maintain performance and predictability under high load.
• Optimise CPU, memory, and data access patterns in performance-critical paths.
• Ensure reliability, observability, and predictability across production services.
• Build well-tested systems with clear responsibilities and interaction contracts, while remaining flexible as architecture evolves.
• Define and implement observability primitives, including structured logs, metrics, traces, and latency breakdowns.
• Monitor throughput, latency, and resource usage, and drive improvements in performance and cost efficiency.
• Collaborate with indexing and ML teams to integrate retrieval and ranking components, keeping ML logic decoupled from core system internals.
• Support experimentation and iteration through controlled rollouts and rigorous benchmarking.

Kenntnisse

C++

Rust

High-load systems

Performance optimization

Observability

Jobbeschreibung

Nebius is building a fast, scalable search platform for agent-based AI consumption. We seek a Senior Software Engineer to craft low-latency runtime systems and optimize every layer from request handling to data access and response assembly.

You will work on high-throughput services under strict latency budgets, collaborate with ML and indexing teams, and help advance production readiness through observability and rigorous benchmarking.