Staff / Senior Software Engineer - Agentic Search Crawler

About Nebius Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D. The Product In a rapidly evolving world, trust in AI depends on AI agents being grounded in fresh, verified real-world data. Search is the foundation that makes this possible. We are building an agent-native search platform designed specifically for AI systems rather than human users. Our product provides programmatic, low-latency, and observable search APIs that AI agents use to retrieve, filter, and reason over real-world information at scale. The Role We are looking for a Senior Software Engineer to work on the content acquisition and crawling infrastructure of a novel search engine tailored for agentic AI consumption. In this role, you will focus on building systems that discover, fetch, and continuously refresh content from the open web and other large-scale data sources. You will design distributed crawling, scheduling, and ingestion infrastructure capable of operating at internet scale while balancing coverage, freshness, resource efficiency, and reliability. You will work on systems that process billions of URLs, manage high-throughput data flows, and ensure that high-quality content is consistently available to downstream indexing and retrieval systems. In This Position, Your Responsibility Will Be To Design, implement, and operate web-scale crawling systems for acquiring content from the internetBuild ingestion workflows for internal and external data sources, including crawlers, structured feeds, and partner integrationsDevelop crawl scheduling, prioritisation, recrawl policies, and freshness strategiesBuild systems for URL discovery, deduplication, content extraction, and crawl orchestrationEnsure reliable operation of crawling infrastructure under high-throughput conditionsDefine observability and quality metrics for crawl coverage, freshness, throughput, and content qualityMonitor resource usage, bandwidth consumption, and infrastructure costCollaborate with indexing and ML teams to ensure acquired content meets retrieval and ranking requirementsEnable safe experimentation with crawling strategies and content acquisition policies You May Be a Good Fit If You 5+ years of experience building backend or distributed systemsStrong 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 extractionExperience operating production systems and debugging failures in distributed environmentsStrong understanding of scalability, fault tolerance, and resource management Strong Candidates May Also Have Experience With Web crawlingBuilding streaming data pipelines and event-driven systemsKafka, Pulsar, NATS, RabbitMQ, or similar messaging platformsDesigning distributed schedulers, queues, and asynchronous processing systemsSpark, Flink, Beam, or MapReduceAd tech, social networks, search engines, or other large-scale content platforms We conduct coding interviews as part of the process. Benefits & Perks Competitive compensationCareer growth and learning opportunitiesFlexibility and ownershipCollaborative and innovative cultureOpportunity to work on impactful AI projectsInternational environment and talented teams What's It Like To Work At Nebius Fast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AI Equal Opportunity Statement Nebius is an equal opportunity employer. We are committed to fostering an inclusive and diverse workplace and to providing equal employment opportunities in all aspects of employment. We do not discriminate on the basis of race, color, religion, sex (including pregnancy), national origin, ancestry, age, disability, genetic information, marital status, veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by applicable law. Applicants must be authorized to work in the country in which they apply and will be required to provide proof of employment eligibility as a condition of hire. If you need accommodations during the application process, please let us know.