Senior Software Engineer (Data Platform, C++)

About the role

We are looking for a Senior Software Engineer with strong C++ expertise to join the team building and operating Nebius Data Platform, a distributed storage and processing platform that serves as the company’s source of truth for many internal and external products.

Key responsibilities

• Design, implement, and roll out new features for the Nebius Data Platform across storage, compute, and analytics layers.
• Extend and maintain the in‑house distribution of YTsaurus, contributing upstream when appropriate.
• Collaborate with internal stakeholders to clarify requirements, prioritize work, and ensure the platform meets real‑world user needs.
• Optimize performance and reliability of distributed storage (Cypress), job scheduling, MapReduce, YQL, SPYT, ClickHouse instances, dynamic tables, and workflow orchestration.
• Operate a large‑scale production cluster (≈500 servers, 20k CPU cores, 10 PB data) supporting business‑critical pipelines and AI/ML workloads.

Required profile

• Proven experience building large‑scale, high‑performance C++ systems.
• Deep understanding of distributed storage, compute scheduling, and data processing frameworks.
• Ability to translate product needs into pragmatic engineering solutions.
• Strong communication skills for aligning with internal users and stakeholders.

Required skills

• C++
• YTsaurus ecosystem
• Distributed storage concepts (transactional semantics, tiered storage, erasure coding, replication)
• Job scheduling and ETL pipelines (MapReduce, YQL, Spark/SPYT)
• ClickHouse
• Dynamic tables with ACID transactions
• Workflow orchestration (Airflow‑like, platform‑native)
• Linux/Unix environments