{"id":2350327,"url":"https://alion.io/job/nebius-senior-software-engineer-agentic-search-web-access-engineer-2","title":"Senior Software Engineer (Agentic Search) - Web Access Engineer","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":75,"open_postings":135,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-12T06:55:09Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"remote","remote_scope":"stated_regions","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Prague, Czech Republic","Israel","Netherlands","United Kingdom","Estonia","Germany","Poland"],"countries":["CZ","IL","NL","GB","EE","DE","PL"],"hiring_countries":["DE","FR","GB","AT","BE","BG","HR","CZ","DK","FI","HU","IE","IL","IT","NL","NO","PL","RO","ES","SE","CH","EE","GR","IS","LV","LI","LT","LU","MT","PT","SK","SI"],"hiring_countries_total":32,"salary":null,"salary_estimate":{"min_usd":103000,"max_usd":220000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":9},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Chrome DevTools","optional":false},{"name":"DNS","optional":false},{"name":"JavaScript","optional":false},{"name":"Playwright","optional":false},{"name":"Selenium","optional":false},{"name":"C++","optional":true},{"name":"Go","optional":true},{"name":"Kubernetes","optional":true},{"name":"Python","optional":true},{"name":"Rust","optional":true}],"status":"live","first_seen_at":"2026-07-31T10:47:24Z","employer_posted_date":"2026-10-12","last_verified_at":"2026-10-12T22:35:03Z","board_verified":true,"closed_at":null,"days_open":73,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":73},"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 Senior Software Engineer to build the web access infrastructure behind a novel search engine designed for agentic AI.\nIn this role, you will investigate how modern websites communicate with browsers and translate that understanding into production systems operating at internet scale. You will build browser infrastructure and tooling that enables reliable, efficient access to web content across a rapidly changing web.\nYour responsibilities will include:\nResearch and analyse how modern websites communicate with browsers across the complete request lifecycle\nInvestigate browser fingerprinting, client verification mechanisms, and modern web technologies to enable reliable web access\nBuild tooling for browser instrumentation, debugging, observability, and large-scale experimentation\nTranslate technical research into production systems operating at internet scale\nRequirements\nYou have 5+ years of experience as a software engineer working on production backend or infrastructure systems, and are an expert in several of the following areas:\nBrowser Technologies\nChromium architecture and browser internals\nBrowser lifecycle and navigation\nChrome DevTools Protocol (CDP)\nPlaywright, Puppeteer, Selenium, or similar browser automation frameworks\nBrowser instrumentation and debugging\nWeb Platform\nHTTP/1.1, HTTP/2, HTTP/3 - TLS, DNS, and browser networking\nCookies, browser storage, caching, redirects, and session management\nJavaScript execution and modern client-side rendering\nResource loading, page lifecycle, and browser networking\nBrowser fingerprinting concepts and browser characteristics\nNice to Have\nExperience working on browser engines or browser infrastructure\nExperience reverse engineering browser or web application behaviour\nExperience building internet-scale distributed systems\nGo, C++, Rust, or Python\nKubernetes and cloud infrastructure\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. 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