Senior Backend Engineer - Web-Scale Crawling & Ingestion

Nebius; Greater London; On-site; GBP 90,000 - 150,000; Full time

Benefits offered by this job

Competitive compensation

Career growth and learning

Flexibility and ownership

Collaborative and innovative culture

Job summary

Nebius is seeking a Senior Software Engineer to build the content acquisition and crawling infrastructure for a novel agent-native search platform. You will design and operate distributed crawling systems, ingestion workflows, and scheduling to process billions of URLs at internet scale, balancing coverage, freshness, efficiency and cost.

You will collaborate with indexing and ML teams to ensure acquired content meets retrieval and ranking requirements, while enabling safe experimentation with

Qualifications

• 5+ years of experience building backend or distributed systems
• Strong Go or C++ expertise
• Experience with large-scale distributed systems (10k+ RPS, billions of URLs, high-throughput pipelines)
• Understanding of web protocols (HTTP, DNS, TLS), crawling, scraping, and content extraction

Responsibilities

• Design, implement, and operate web-scale crawling systems for acquiring content from the internet
• Build ingestion workflows for internal and external data sources, including crawlers, structured feeds, and partner integrations
• Develop crawl scheduling, prioritisation, recrawl policies, and freshness strategies
• Build systems for URL discovery, deduplication, content extraction, and crawl orchestration
• Ensure reliable operation of crawling infrastructure under high-throughput conditions
• Define observability and quality metrics for crawl coverage, freshness, throughput, and content quality
• Monitor resource usage, bandwidth consumption, and infrastructure cost
• Collaborate with indexing and ML teams to ensure acquired content meets retrieval and ranking requirements

Job description

Nebius is seeking a Senior Software Engineer to build the content acquisition and crawling infrastructure for a novel agent-native search platform. You will design and operate distributed crawling systems, ingestion workflows, and scheduling to process billions of URLs at internet scale, balancing coverage, freshness, efficiency and cost.

You will collaborate with indexing and ML teams to ensure acquired content meets retrieval and ranking requirements, while enabling safe experimentation with