Staff / Senior Software Engineer (Agentic Search) - Index

About the role

Nebius is building an agent-native search platform designed for AI systems to retrieve, filter, and reason over real-world information at scale. This role focuses on the indexing and data processing layer, where you will build systems to ingest and organize massive volumes of data into efficient, queryable structures. You will work on offline and nearline pipelines, ensuring data freshness and accessibility for downstream retrieval systems.

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

Required skills

• Go
• Data infrastructure
• Distributed systems
• Indexing pipelines
• Data processing
• Storage systems

Nice to have

• C++
• Rust
• Spark
• Flink
• MapReduce
• Beam
• DBMS internals

Benefits

• Competitive compensation
• Career growth and learning opportunities
• Flexibility and ownership
• Collaborative and innovative culture
• Opportunity to work on impactful AI projects
• International environment

About the Company

Nebius is leading a new era 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. Listed on Nasdaq, the company has a global footprint with R&D hubs across Europe, the UK, North America and Israel.