{"id":2243741,"url":"https://alion.io/job/nebius-staff-senior-software-engineer-agentic-search-index","title":"Staff Software Engineer (Agentic Search) - Index","company":{"id":6364,"name":"Nebius","domain":"nebius.com","url":"https://alion.io/company/nebius","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":84,"open_postings":110,"ghost_share":0,"stale_share":0.627,"repost_share":0,"time_to_fill_p50_days":56,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Backend","role_family":"Backend","seniority":"staff","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Zurich, Switzerland"],"countries":["CH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":201000,"max_usd":432000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":2286},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"C++","optional":false},{"name":"Go","optional":false},{"name":"Rust","optional":false},{"name":"Flink","optional":true}],"status":"live","first_seen_at":"2026-09-16T12:15:41Z","employer_posted_date":"2026-10-16","last_verified_at":"2026-10-22T08:07:56Z","board_verified":true,"closed_at":null,"days_open":35,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":35},"description":"About Nebius:\nNebius 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.\nBuilt by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.\nListed 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.\nThe Product\nIn 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.\nWe 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.\nThe Role\nWe are looking for a Staff Software Engineer to work on the indexing and data processing layer of a novel search engine tailored for agentic AI consumption.\nIn this role, you will focus on building systems that ingest, process, and organise massive volumes of data into efficient, queryable structures. You will work primarily on offline and nearline pipelines, ensuring that data is fresh, complete, and efficiently accessible by downstream retrieval systems. You will operate in an environment where throughput, scalability, and correctness are critical; designing systems capable of handling tens of gigabytes per second across continuously evolving datasets.\nIn this position, your responsibility will be to:\nDesign, implement, and operate large-scale indexing systems and data pipelines that sit at the core of our search infrastructure\nDevelop and optimise indexing strategies balancing performance, freshness, and resource efficiency\nWork on storage formats, compaction strategies, and update mechanisms to keep data accessible and current\nEnsure reliability and predictability of pipelines under high-throughput conditions\nBuild well-tested components with clear responsibilities and interaction contracts, while remaining flexible as the system evolves\nDefine and implement observability primitives, including structured logs, metrics, and data quality signals across offline and nearline pipelines\nMonitor throughput, resource usage, and cost, and drive optimisations when business needs require it\nCollaborate with runtime and ML teams to ensure indexing outputs meet retrieval and ranking requirements\nEnable safe experimentation on indexing strategies and data processing logic through controlled rollouts and clearly defined quality signals\nYou may be a good fit if you:\n8+ years of experience building production backend or data infrastructure systems\nStrong Go experience (C++/Rust is a plus)\nExperience with large-scale data processing systems (10+ GiB/sec throughput, petabyte-scale datasets, etc.)\nExperience building or operating databases, storage systems, data planes, or indexing pipelines\nStrong understanding of distributed systems, fault tolerance, consistency, and scalability\nExperience running production systems and handling operational incidents\nSystems-thinking mindset and ability to reason about end-to-end data flows\nStrong candidates may also have experience with:\nDistributed data processing frameworks such as Spark, Flink, MapReduce, or Beam\nContent systems including, scraping, proxying, or anti-bot infrastructure\nAd tech, social networks, or other large-scale content platforms\nDBMS internals (open source or SaaS) and cloud infrastructure\nOpen-source contributions or active involvement in the engineering community\nCompetitive programming or CTF participation (ICPC, IOI, or similar)\nSHAD or similar advanced technical programmes\nConference talks or technical publications\nWe conduct coding interviews as part of the process.\nBenefits & Perks:\nCompetitive compensation\nCareer growth and learning opportunities\nFlexibility and ownership\nCollaborative and innovative culture\nOpportunity to work on impactful AI projects\nInternational environment and talented teams\nWhat's it like to work at Nebius:\nFast moving - Bold thinking - Constant growth - Meaningful impact - Trust and real ownership - Opportunity to shape the future of AI \nEqual Opportunity Statement:\nNebius 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.\nApplicants 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. \nIf you need accommodations during the application process, please let us know.","description_format":"text","description_chars":5334,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Centers & Colocation","Cloud Platforms (IaaS & PaaS)","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-10-11T01:05:42Z"}],"visa":[],"liveness":{"score":53,"band":"ok","label":"Likely open","p_open":1,"p_active":0.594,"p_room":0.9,"age_days":35,"expected_fill_days":56,"reasons":["conf:1","stale_co","velocity","win:mid","comp:brand"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/nebius-staff-senior-software-engineer-agentic-search-index","json_url":"https://alion.io/job/nebius-staff-senior-software-engineer-agentic-search-index.json","meta":{"generated_at":"2026-10-22T09:29:47Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":6317,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":6364},"rest":"https://alion.io/mcp/rest/get_company?id=6364"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fnebius-staff-senior-software-engineer-agentic-search-index"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fnebius-staff-senior-software-engineer-agentic-search-index"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fnebius-staff-senior-software-engineer-agentic-search-index"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/nebius-staff-senior-software-engineer-agentic-search-index\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnebius-staff-senior-software-engineer-agentic-search-index"}]}