{"id":3613497,"url":"https://alion.io/job/radiant-data-center-architect","title":"Data Center Architect","company":{"id":8822,"name":"Radiant","domain":"radiant.com","url":"https://alion.io/company/radiant","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":88,"open_postings":14,"ghost_share":0,"stale_share":0.5,"repost_share":0,"time_to_fill_p50_days":49,"computed_at":"2026-11-02T06:13:15Z"}},"role":"DevOps","role_family":"DevOps","seniority":"staff","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"InfiniBand","optional":false},{"name":"Digital Twin","optional":true}],"status":"live","first_seen_at":"2026-11-02T12:09:56Z","employer_posted_date":"2026-11-02","last_verified_at":"2026-11-03T01:00:04Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Role Profile\nJob Title: Data Centre Architect\nReports to: Head of Data Centre Development\nLocation: UK hybrid\nCompany Overview:\nRadiant is redefining how AI infrastructure is built.\nWe design and operate AI-native cloud platforms engineered for sovereignty, performance, and scale. Our infrastructure powers GPU-native workloads, multi-tenant control planes, and high-performance AI systems designed for the most demanding environments.\nWe are not building a generic cloud. We are building purpose-built AI infrastructure - from powered land, to compute, to software.\nAs we scale, we’re building this organisation from the ground up. We’re looking for people who’d rather build the playbook than inherit one - who are comfortable doing the work themselves as well as directing others, and who can adapt as fast as our strategy does. This is a startup model: attitude and adaptability matter more to us than years of experience or the size of team you’ve previously managed.\nThis is a senior individual contributor role with authority to sign off technical schedules, working with cluster and network architects, NVIDIA and other OEM engineers, colocation provider engineering and sales teams, and the internal Procurement, Legal, Finance and Site Operations teams.\nWhat You’ll Do\nYou will be the single technical authority between our GPU-as-a-service business and the colocation providers that host our NVIDIA clusters. You turn cluster architecture and OEM requirements into a precise, contractable statement of work (SOW) for the data centre white space, then hold the provider to it through design, installation and acceptance.\nWe are growing from tens of megawatts to hundreds, on rack-scale liquid-cooled platforms at 130 kW per rack and rising to 200 kW and beyond. Mistakes in power, cooling or fibre specification show up as stranded capacity, delayed cluster delivery and disputes, so the role carries real commercial weight.\nKey Responsibilities\nTechnical negotiation with colocation providers\nLead technical due diligence on candidate sites: power availability and energisation dates, redundancy topology, liquid-cooling capability, floor loading, rack logistics, fibre and meet-me access.\n\nNegotiate the technical schedules of the colocation agreement with commercial and legal: capacity and density commitments, power and cooling SLAs, temperature and flow envelopes, metering, expansion rights, change control and remedies.\n\nChallenge provider claims with evidence: single-line diagrams, P&IDs, load-bank and commissioning records, reference customers.\n\nSpecification & SOW\nWork with cluster architects and OEMs (NVIDIA first) to capture rack, power, cooling, network and layout requirements, and keep them current across product generations.\n\nWrite and own the technical SOW for white-space fitout: containment and cooling interfaces, power distribution to rack, structured cabling and pathways, rack and POD layout, security zoning, labelling and records.\n\nDefine clear scope boundaries and responsibilities between us, the colocation provider, OEMs and installation contractors, with no gaps and no overlaps.\n\nMaintain a requirements baseline with traceability from OEM document, to SOW clause, to acceptance test.\n\nDesign, installation & acceptance\nReview provider and contractor designs, shop drawings and method statements against the SOW; run design reviews and close findings.\n\nDefine acceptance: factory and site tests, liquid flush and cleanliness, power quality, thermal performance at full load, fibre loss, burn-in, and the evidence pack needed for each gate.\n\nAttend key witness tests and sign off, or reject, completion of each phase before hardware is energised.\n\nManage technical change requests and variations, and advise on cost and schedule impact.\n\nKnowledge & standards\nBuild reusable reference designs, SOW templates and a site-scoring framework so each new deployment starts from a proven baseline.\n\nTrack the roadmap: higher rack densities, 800 VDC distribution, new cooling classes and optics, and tell the business early what it means for sites already contracted.\n\nDeliverables You Own:\nSite technical assessment: Scored, evidence-based report per candidate site, comparable across providers, with risks and mitigations.\n\nTechnical schedules to the colocation agreement: Measurable commitments, tested in acceptance, with remedies agreed by legal.\n\nCluster white-space SOW: Complete enough that a contractor can price and build without asking us questions; traceable to OEM requirements.\n\nReference designs and layouts: Rack, row and POD layouts, power and cooling single-line and P&ID level interfaces, fibre pathways and densities.\n\nAcceptance test plan and evidence pack: Pass and fail criteria set before work starts; signed results per gate.\n\nRequirements baseline and change log: One current version of the truth, with every variation recorded and costed.\n\nRisk and issues register: Technical risks to schedule and capacity, with owners and dates.\n\nWorking Relationships:\nCluster and network architects: You translate their cluster design into facility requirements, and they rely on you to say what a site can and cannot carry.\n\nOEMs, mainly NVIDIA: You are the facility-side counterpart; you obtain, interpret and challenge site-requirement documents.\n\nColocation providers: Day-to-day technical counterpart through negotiation, build and acceptance.\n\nProcurement, legal and finance: You provide the technical substance of commercial terms and the impact of variations.\n\nSite operations and deployment teams: You hand over a clean specification and acceptance evidence, and take back lessons learned.\n\nWhat You Bring:\n8 or more years in data centre design, delivery or technical consulting, including at least 3 years on high-density (50 kW per rack or more) or liquid-cooled deployments.\n\nDirect experience writing or reviewing technical specifications and SOWs for white-space fitout, and managing contractors against them to acceptance.\n\nStrong working knowledge of data centre power: MV and LV distribution, UPS and generator topologies, redundancy models (N+1, 2N, distributed), busway and rack power, metering and power quality.\n\nStrong working knowledge of cooling: direct-to-chip liquid cooling, CDUs, facility and technology loops, warm-water and dry-cooler designs, fluid quality and flushing, leak detection and containment.\n\nWorking knowledge of structured cabling and pathways for large GPU fabrics (single-mode optics, high fibre counts, InfiniBand and Ethernet physical layers), and of rack and POD layouts.\n\nFamiliarity with NVIDIA rack-scale platforms (GB200 or GB300 class, or later) and their facility requirements, and the ability to read OEM site-requirement documents critically.\n\nProven ability to run technical negotiations with colocation or construction counterparties, and to explain trade-offs to commercial, legal and executive audiences.\n\nCommand of standards such as EN 50600 and the Uptime Tier framework, ASHRAE TC 9.9 liquid-cooling guidance, and commissioning practice (levels 1 to 5).\n\nExcellent written communication: you produce clear, unambiguous contract-grade documents.\n\nPreferred Skills (Nice to Have):\nExperience at a hyperscaler, neocloud or colocation provider on the operator or customer side.\n\nExperience with 800 VDC or other DC distribution, large battery storage, or power smoothing for AI load swings.\n\nChartered engineer status or equivalent; recognised data centre credentials (for example CDCP, CDFOM, Uptime ATD or AOS).\n\nFamiliarity with BIM, digital-twin tools and requirements-management tools.\n\nWillingness to travel up to 30% to sites in the UK, Europe and the US.\n\nSuccess Measures:\nFirst 90 days: Audit current colocation contracts and SOWs and list technical gaps; publish a requirements baseline for the current NVIDIA platform; take over technical lead on one live negotiation; agree the site-scoring framework with the cluster architects.\n\n6 months: One complete SOW issued and priced with no material scope disputes; acceptance plan agreed with the provider before build starts; reusable SOW template adopted by the team.\n\n12 months: Every new site contracted on the template with traceable requirements; clusters accepted on schedule with no facility-caused performance issues; fewer late variations and a measurable cut in time from site shortlist to signed technical schedule.\n\nQualities we look for:\nSet the standard: Every single day, you spot opportunities to constructively shake things up.\n\nInspire the change: There’s no blueprint for the future. You’ll embrace challenges and change.\n\nYou’re real and you’re true to yourself: We cherish and celebrate diversity so you’ll feel right at home whoever you are and whoever you’re talking to, you treat everyone the same.\n\nGet stuck in: You’d rather be building than overseeing. Our strategy will keep evolving, and so will you - attitude and adaptability matter more to us than a fixed playbook or a big team behind you.\n\nPackage & Process:\nEmployment type: Full-time, permanent.\n\nTravel: Up to 30%.\n\nInterview process:\nTalent Screening > Hiring Manager Screen > Technical Interview > Final with the Head of Data Centre Development.\n\nWe are an equal opportunities employer and welcome applications from all backgrounds.","description_format":"text","description_chars":9293,"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":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["MLOps","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-11-02T15:24:31Z"}],"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":49,"reasons":["conf:3","win:early"],"computed_at":"2026-11-03T04:54:38Z"},"pay":null,"html_url":"https://alion.io/job/radiant-data-center-architect","json_url":"https://alion.io/job/radiant-data-center-architect.json","meta":{"generated_at":"2026-11-03T04:54:38Z","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":6620,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"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":8822},"rest":"https://alion.io/mcp/rest/get_company?id=8822"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fradiant-data-center-architect"},{"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%2Fradiant-data-center-architect"},{"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%2Fradiant-data-center-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/radiant-data-center-architect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fradiant-data-center-architect"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3613497}},{"tool":"search_jobs","arguments":{"company":"radiant.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3613497},"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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