{"id":40406,"url":"https://alion.io/job/fluidstack-network-engineer-design-engineering","title":"Network Engineer, Design & Engineering","company":{"id":716444,"name":"Fluidstack","domain":"fluidstack.com","url":"https://alion.io/company/fluidstack-2","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":89,"open_postings":26,"ghost_share":0,"stale_share":0.423,"repost_share":0,"time_to_fill_p50_days":54,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Networking","role_family":"Networking","seniority":null,"employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":202000,"max":261000,"currency":"USD","period":"year","gross":null,"usd_annual":261000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false}],"status":"live","first_seen_at":"2026-08-04T15:14:17Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-10-18T09:34:04Z","board_verified":true,"closed_at":null,"days_open":74,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":74},"description":"About Fluidstack\nWe exist to make humanity more free. For most of human history, you farmed or you starved. Technology gave people more time for the things they wanted to do, instead of things they had to do. Powerful AI will be the biggest lever for human choice we've ever built - but only if models are aligned with what humanity actually wants. There are groups building AI who don't share these goals. Whoever deploys frontier compute infrastructure fastest will decide whether AI expands human freedom or shrinks it. \nWe're singularly focused on delivering 10 to 100s of GWs of compute faster than anyone else, rethinking every layer of the stack. We acquire power, design and build data centers, and operate them - with teams spanning hardware and software. Speed and scale are our key differentiators. Come be a part of building civilization-scale infrastructure for AI.\nWe hire people who care deeply about this problem space. If that is you, please apply!\nHow We Operate\nBe a barrel. Full autonomy. Own things end to end, take on scope without being asked, no permission required to operate outside your core role.\n\nInsane urgency. We drive everything forward as fast as possible.\n\nReason from first principles. Challenge every assumption. Zero analogy thinking, no egos, the best idea wins.\n\nLove of the game. The frontier of AI is the most interesting problem of our time. We put in long hours at high intensity to push the frontier forward.\n\nBuild something that actually matters. If you're going to spend your time, spend it on something that matters to the world.\n\nThe Infrastructure Team\nExamples of key problems the team is working on\nDesign the fabrics the frontier trains on. Lossless, non-blocking backend networks for clusters of 100k+ accelerators, re-derived for every new generation of silicon, often before the chip is public.\n\nMultiple fabrics, one system. Frontend, backend, backbone, management, enterprise, and BMS, designed as a single coherent architecture.\n\nGenerate the design, don't draw it. Topologies, addressing, BGP/ASN schemas, and golden configs produced from a source-of-truth model, a full site network design in days instead of quarters, correct by construction.\n\nRole Scope\nOwn the network design lifecycle from customer requirements (GPU shape, workload, scale, tenancy) through deployable, validated architectures for AI training and inference.\n\nProduce topology designs, IP/addressing schemes, routing policy, and fabric configuration specs across front-end, back-end (GPU-to-GPU training fabric), and storage networks.\n\nAdapt architectures to different GPU platforms (NVIDIA, AMD, custom accelerators), form factors, and workload profiles, each with its own rack layout, power envelope, and cabling approach.\n\nTranslate logical designs into physical reality: rack elevations, power constraints, structured cabling and fiber budgets, pathway routing, and airflow that affect equipment placement.\n\nDesign lossless Ethernet fabrics for RDMA (RoCEv2): PFC, ECN tuning, traffic classes, and congestion management, reasoning about ECMP and collective-communication patterns in distributed training.\n\nProduce HLDs, LLDs, cutsheets, BOMs, cabling matrices, and design decision records, and lead design reviews and reusable reference architectures.\n\nWhat We're Looking For\nThe below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly,tell us where you would .\nYou've designed data center network fabrics from requirements through deployment, not just configured them, and can explain the tradeoffs behind every decision.\n\nYou have deep L1 to L3 expertise: CLOS/fat-tree topologies, BGP, EVPN/VXLAN, and the fundamentals underneath them.\n\nYou design lossless RDMA (RoCEv2) fabrics and understand congestion management at training scale.\n\nYou reason from first principles through novel design challenges rather than pattern-matching to one reference architecture.\n\nYou partner across Hardware, DC Operations, ICT, Software, and Validation so designs are buildable and operationally sound.\n\nBonus: Source-of-truth-driven design generation. Multi-vendor GPU platform integration. Large-cluster (100k+ accelerator) experience.\n\nSalary & Benefits\nCompetitive total compensation package (salary + equity).\n\nRetirement or pension plan, in line with local norms.\n\nHealth, dental, and vision insurance.\n\nGenerous PTO policy, in line with local norms.\n\nWe are committed to pay equity and transparency.\nFluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans’ status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.\nYou will receive a confirmation email once your application has successfully been accepted. If there is an error with your submission and you did not receive a confirmation email, please email  with your resume/CV, the role you've applied for, and the date you submitted your application-- someone from our recruiting team will be in touch.","description_format":"text","description_chars":5280,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Retirement plans","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Centers & Colocation","Cloud Platforms (IaaS & PaaS)","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-08-04T15:14:17Z"},{"event":"close","at":"2026-09-15T19:54:38Z"},{"event":"reopen","at":"2026-09-17T21:12:23Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 23","filings_12m":23,"filings_prev_12m":0,"green_card_filings_12m":0,"median_offered_wage_usd":248152,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":3}],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.471,"p_room":0.44,"age_days":73,"expected_fill_days":54,"reasons":["conf:1","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":261000,"is_top_pay":true},"html_url":"https://alion.io/job/fluidstack-network-engineer-design-engineering","json_url":"https://alion.io/job/fluidstack-network-engineer-design-engineering.json","meta":{"generated_at":"2026-10-18T11:59:38Z","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":17938,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":716444},"rest":"https://alion.io/mcp/rest/get_company?id=716444"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffluidstack-network-engineer-design-engineering"},{"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%2Ffluidstack-network-engineer-design-engineering"},{"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%2Ffluidstack-network-engineer-design-engineering"},{"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/fluidstack-network-engineer-design-engineering\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffluidstack-network-engineer-design-engineering"}]}