{"id":2150080,"url":"https://alion.io/job/nebius-senior-software-engineer-ydb-team","title":"Senior Software Engineer (YDB Team)","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":78,"open_postings":131,"ghost_share":0,"stale_share":0.87,"repost_share":0,"time_to_fill_p50_days":38,"computed_at":"2026-10-13T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"inferred_payroll_markers","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":109000,"max_usd":270000,"period":"year","method":"global_role_seniority_cell","sample_n":6328},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon S3","optional":false},{"name":"C++","optional":false},{"name":"IAM","optional":false},{"name":"DNS","optional":true},{"name":"Grafana","optional":true},{"name":"InfiniBand","optional":true},{"name":"Kubernetes","optional":true},{"name":"Linux","optional":true}],"status":"closed","first_seen_at":"2026-10-09T01:34:17Z","employer_posted_date":null,"last_verified_at":"2026-10-12T06:43:13Z","board_verified":false,"closed_at":"2026-10-12T06:43:13Z","days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"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.\n\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.\n\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.\n\nThe role\n\nThe YDB Development Team at Nebius is looking for Mid and Senior Software Developer with a strong expertise in C++.\n\nYDB is an open-source product that serves two main purposes within Nebius:\n\nA scalable and reliable binary object storage foundation powering S3 Object Storage, Filestore, Network Block Storage Tailored to process AI- related Workloads\n\nA distributed relational database and message broker supporting Nebius cloud operations such as IAM, Billing, Audit Trails and Logging\n\nHow You Will Change the World with Us\n\nAdapt YDB to leverage modern hardware to its fullest potential: QLC NVMe drives, Dual 800Gb/s network adapters, BlueField DPUs\n\nMaximize performance on widely used devices such as HDDs and TLC NVMe\n\nReengineer YDB components with more efficient algorithms to solve complex system challenges\n\nRequirements\n\n5+ years of experience in C/C++ programming for highly loaded systems\n\nUnderstanding of core dumps, flamegraphs, and sanitized builds\n\nExperience developing high-performance, low-latency components\n\nUnderstanding of CPU caches, Modern CPU atomic operations and NUMA architectures\n\nNice to Have\n\nExperience with on-disk data structures (LSM trees, B+ trees)\n\nHands-on experience with debugging and profiling tools such as perf, VTune, bpftrace, gdb\n\nKnowledge of storage-related algorithms (erasure coding, checksumming)\n\nUnderstanding of storage device internals (NVMe, HDD)\n\nFamiliarity with Linux kernel, SPDK/DPDK, libaio, io_uring\n\nKnowledge of networking concepts and protocols (IP, TCP, UDP, DNS, ideally InfiniBand, RoCE/RDMA)\n\nExperience with Kubernetes and Grafana\n\nTrack record of active participation in incident resolution\n\nExperience designing production-grade distributed storage components\n\nKnowledge of availability and durability calculations\n\nWe conduct coding interviews as part of the process.\n\nBenefits & Perks:\n\nCompetitive compensation\n\nCareer growth and learning opportunities\n\nFlexibility and ownership\n\nCollaborative and innovative culture\n\nOpportunity to work on impactful AI projects\n\nInternational environment and talented teams\n\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 \n\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.\n\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. \n\nIf you need accommodations during the application process, please let us know.\n\nOriginally posted on Himalayas","description_format":"text","description_chars":3810,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Artificial Intelligence","Commerce","Education","Data Centers & Colocation"],"lifecycle":[{"event":"open","at":"2026-10-09T05:37:00Z"},{"event":"open","at":"2026-10-12T05:37:38Z"},{"event":"close","at":"2026-10-12T06:43:13Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-10-13T06:20:30+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":null,"pay":null,"html_url":"https://alion.io/job/nebius-senior-software-engineer-ydb-team","json_url":"https://alion.io/job/nebius-senior-software-engineer-ydb-team.json","meta":{"generated_at":"2026-10-13T07:22:52Z","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":10876,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"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-senior-software-engineer-ydb-team"},{"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-senior-software-engineer-ydb-team"},{"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-senior-software-engineer-ydb-team"},{"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-senior-software-engineer-ydb-team\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnebius-senior-software-engineer-ydb-team"}]}