Staff Software Engineer, Real-Time Agentic Search Runtime

FDE Times; Greater London; Hybrid; GBP 130,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Career growth and learning

Flexibility and ownership

Collaborative and innovative culture

Impactful AI projects

Job summary

Nebius is seeking a Staff Software Engineer to work on the runtime systems of a novel search engine tailored for agentic AI consumption.

You will build low-latency, high-throughput services that handle thousands of requests per second, optimize data access, and ensure reliability, observability, and cost efficiency across production.

Candidates should have 8+ years of backend experience, strong hands-on skills in C++ or Rust, and a proven track record in high-load systems and performance tuning.

Qualifications

• 8+ years of experience as a software engineer on production backend systems.
• Strong hands-on expertise in C++ or Rust in real-world, high-load services.
• Experience building low-latency, high-throughput systems and optimizing performance.
• Understanding of CPU, memory, networking, and data access at system level.

Responsibilities

• Design, implement, and operate core runtime services for serving search queries at scale.
• Build and optimise request flows, including query processing and response assembly under latency budgets.
• Develop systems that maintain performance and predictability under high load.
• Monitor throughput, latency, and resource usage and drive performance improvements.
• Collaborate with indexing and ML teams to integrate retrieval and ranking components.

Skills

Backend engineering

High-load systems

Performance tuning

Observability

Tools

C++

Rust

Job description

Nebius is seeking a Staff Software Engineer to work on the runtime systems of a novel search engine tailored for agentic AI consumption.

You will build low-latency, high-throughput services that handle thousands of requests per second, optimize data access, and ensure reliability, observability, and cost efficiency across production.

Candidates should have 8+ years of backend experience, strong hands-on skills in C++ or Rust, and a proven track record in high-load systems and performance tuning.