Staff Software Engineer — Agentic Search & Indexing

Nebius Group; Amsterdam; On-site; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Competitive compensation

Career growth

Flexibility

Collaborative culture

Impactful AI projects

International environment

Job summary

Nebius Group in Amsterdam, the Netherlands, is seeking a Staff Software Engineer (Agentic Search) to join the indexing and data-processing layer of a novel search engine tailored for agentic AI consumption. The role focuses on ingesting, processing, and organizing massive data into efficient, queryable structures, with emphasis on offline and nearline pipelines.

You will design and operate large-scale indexing systems, optimise data formats and update mechanisms, and collaborate with runtime and

Qualifications

• 8+ years of experience building production backend or data infrastructure systems.
• Strong Go experience (C++/Rust is a plus).
• Experience with large-scale data processing systems (10+ GiB/sec throughput, petabyte-scale datasets).
• Experience building or operating databases, storage systems, data planes, or indexing pipelines.
• Strong understanding of distributed systems, fault tolerance, consistency, and scalability.

Responsibilities

• Design, implement, and operate large-scale indexing systems and data pipelines that sit at the core of our search infrastructure.
• Develop and optimise indexing strategies balancing performance, freshness, and resource efficiency.
• Work on storage formats, compaction strategies, and update mechanisms to keep data accessible and current.
• Ensure reliability and predictability of pipelines under high-throughput conditions.
• Build well-tested components with clear responsibilities and interaction contracts, while remaining flexible as the system evolves.
• Define and implement observability primitives, including structured logs, metrics, and data quality signals across offline and nearline pipelines.
• Monitor throughput, resource usage, and cost, and drive optimisations when business needs require it.
• Collaborate with runtime and ML teams to ensure indexing outputs meet retrieval and ranking requirements.
• Enable safe experimentation on indexing strategies and data processing logic through controlled rollouts and clearly defined quality signals.

Skills

Go

Distributed systems

Backend engineering

Data infrastructure

Tools

Spark

Flink

MapReduce

Beam

C++/Rust

Job description

Nebius Group in Amsterdam, the Netherlands, is seeking a Staff Software Engineer (Agentic Search) to join the indexing and data-processing layer of a novel search engine tailored for agentic AI consumption. The role focuses on ingesting, processing, and organizing massive data into efficient, queryable structures, with emphasis on offline and nearline pipelines.

You will design and operate large-scale indexing systems, optimise data formats and update mechanisms, and collaborate with runtime and