{"id":4104850,"url":"https://alion.io/job/vultr-ai-cluster-architect","title":"AI Cluster Architect","company":{"id":58892,"name":"Vultr","domain":"vultr.com","url":"https://alion.io/company/vultr","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":85,"open_postings":13,"ghost_share":0,"stale_share":0.615,"repost_share":0,"time_to_fill_p50_days":45,"computed_at":"2026-11-11T05:49:22Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"staff","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"HPC","optional":false},{"name":"InfiniBand","optional":false},{"name":"NVLink","optional":false},{"name":"ROCm","optional":false},{"name":"Vultr","optional":false}],"status":"live","first_seen_at":"2026-11-11T17:39:17Z","employer_posted_date":"2026-11-11","last_verified_at":"2026-11-11T22:24:26Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Who We Are\nVultr is on a mission to make high-performance cloud infrastructure easy to use, affordable, and locally accessible for enterprises and AI innovators around the world. With 33 global cloud data center locations, Vultr is trusted by hundreds of thousands of active customers across 185 countries for its flexible, scalable, global Cloud Compute, Cloud GPU, Bare Metal, and Cloud Storage solutions. In December 2024 Vultr announced an equity financing at a $3.5 billion valuation. Founded by David Aninowsky and self-funded for over a decade, Vultr has grown to become the world’s largest privately-held cloud infrastructure company.\nVultr Cares\n100% company-paid insurance premiums for employee medical, dental and vision plans.\n\n401(k) plan that matches 100% up to 4%, with immediate vesting\n\nProfessional Development Reimbursement of $2,500 each year\n\n11 Holidays + Paid Time Off Accrual + Rollover Plan\n\nCommitment matters to Vultr! Increased PTO at 3 year and 10 year anniversary + 1 month paid sabbatical every 5 years + Anniversary Bonus each year\n\n$500 stipend for remote office setup in first year + $400 each following year\n\nInternet reimbursement up to $75 per month\n\nGym membership reimbursement up to $50 per month\n\nCompany paid Wellable subscription\n\nJoin Vultr\nVultr is looking for an AI Cluster Architect who will be responsible for creating and refining large-scale GPU cluster architectures within strict power and infrastructure limits. This role focuses heavily on power-aware design: starting from a fixed power envelope, the architect determines the optimal number of GPUs while accounting for the full stack of services needing to be deployed-compute nodes, storage systems, networking fabric, cooling, and facility constraints. This role requires deep experience navigating heterogeneous environments, multiple generations of hardware, and end user requirements.\nThe architect must understand how different GPU SKUs, NICs, switches, and fabrics interact at scale, including their individual and aggregate power and thermal characteristics. They will evaluate multi-plane, rail-optimized, and tiered fabric designs across technologies like InfiniBand, RoCE, and SpectrumX to ensure the networking architecture supports the intended GPU count without overrunning facility limits or switch radix and/or topology constraints. This role balances customer-specific requirements for compute, storage, and service density, ensuring that the final cluster design maintains acceptable levels of GPU and fabric performance, while maximizing the number of usable GPUs within the total power budget.\nKey Responsibilities\nArchitect large-scale GPU clusters within fixed site power budgets that optimizes for maximum GPU density while reserving necessary headroom for compute services, storage, and networking.\n\nModel and validate power consumption across the full cluster bill of materials (GPUs, CPUs, NICs, switches, fabric components, storage, and facility limits).\n\nEvaluate tradeoffs across multiple fabric networking architectures (InfiniBand, RoCE, SpectrumX) as well as multi-plane, 2-tier/3-tier, and rail-optimized topologies.\n\nDetermine network scale limits based on switch radix, link speed, topology, and blocking requirements.\n\nGather, interpret, and maintain detailed SKU-level power and thermal specifications for GPUs, NICs, switches, DPUs, storage, and server platforms.\n\nDevelop power-aware cluster configuration templates and capacity-planning models that can scale across sites with varying constraints and allow for quick iteration and ideation.\n\nDocument architecture, design choices, tradeoff analyses, and operational considerations for deployment and lifecycle management.\n\nProvide guidance on future-proofing, including the ability to incorporate next-gen GPUs, NICs, or fabrics.\n\nCollaborate with vendors on novel fabric architectures that enable large-scale cluster deployments (100k+ GPUs)\n\nQualifications\n7+ years designing or building large-scale HPC, AI, or hyperscale GPU clusters.\n\nExpert understanding of GPU and accelerator system design, including node topology, PCIe/NVLink/NVSwitch/ROCm, and NIC-to-GPU affinity considerations.\n\nStrong familiarity with InfiniBand, RoCE, and SpectrumX networking, including multi-tier, multi-plane, Clos/dragonfly variants, and large-radix switch design.\n\nDemonstrated experience modeling power draw and thermal characteristics of servers, GPUs, NICs, switches, optics, and storage systems.\n\nAbility to design networks that maintain full non-blocking performance or intentionally introduce over/under-subscription while understanding impacts on workload performance.\n\nProven ability to gather and analyze vendor SKU-level specifications and incorporate them into scalable cluster architectures.\n\nExperience balancing customer-driven requirements for compute, storage, and service density in combination with overall GPU count.\n\nStrong documentation, communication, and cross-functional collaboration skills.\n\nCompensation\n$200,000 - $220,000\nFinal compensation will vary depending on years of experience, background/skill set, location, and applicable laws.\nInclusion & Privacy\nWe are an equal opportunity employer and are committed to creating an inclusive environment for all employees. We welcome applications from individuals of all backgrounds and experiences, and we prohibit discrimination based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected status under applicable laws. Vultr will consider qualified applicants with arrest or conviction records in accordance with applicable laws and will not conduct a background check until after an offer of employment has been extended and accepted.\nWe also take your privacy seriously. We handle personal information responsibly and follow applicable laws, including U.S. privacy rules and India’s Digital Personal Data Protection Act, 2023. Your data is used only for legitimate business purposes and is protected with proper security measures.\nWhere allowed by law, applicants may request details about the data we collect, access or delete their information, withdraw consent for its use, and opt out of nonessential communications. For more details, please see our Privacy Policy.","description_format":"text","description_chars":6318,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Gym membership","Internet reimbursement","Professional development"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Cloud Platforms (IaaS & PaaS)"],"lifecycle":[{"event":"open","at":"2026-11-11T22:24:26Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":45,"reasons":["conf:2","win:early"],"computed_at":"2026-11-12T00:59:34Z"},"pay":null,"html_url":"https://alion.io/job/vultr-ai-cluster-architect","json_url":"https://alion.io/job/vultr-ai-cluster-architect.json","meta":{"generated_at":"2026-11-12T00:59:34Z","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":2301,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-13T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.1,"usd":0.01,"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":58892},"rest":"https://alion.io/mcp/rest/get_company?id=58892"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fvultr-ai-cluster-architect"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":2,"usd":0.2},"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%2Fvultr-ai-cluster-architect"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.1,"usd":0.01},"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%2Fvultr-ai-cluster-architect"},{"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/vultr-ai-cluster-architect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fvultr-ai-cluster-architect"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":4104850}},{"tool":"search_jobs","arguments":{"company":"vultr.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":4104850},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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