{"id":908169,"url":"https://alion.io/job/xai-network-engineer-3","title":"Sr. Network Engineer","company":{"id":28,"name":"xAI","domain":"x.ai","url":"https://alion.io/company/xai","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":83,"open_postings":89,"ghost_share":0,"stale_share":0.483,"repost_share":0,"time_to_fill_p50_days":66,"computed_at":"2026-11-06T05:58:05Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Dublin, Ireland"],"countries":["IE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Ansible","optional":false},{"name":"BGP","optional":false},{"name":"HPC","optional":false},{"name":"OSPF","optional":false},{"name":"Python","optional":false},{"name":"NCCL","optional":true},{"name":"TCP/IP","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-09-14T13:52:13Z","employer_posted_date":"2026-11-06","last_verified_at":"2026-11-07T04:01:47Z","board_verified":true,"closed_at":null,"days_open":53,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":53},"description":"SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today, SpaceX is actively developing the technologies to make this possible, with the ultimate goal of making life multiplanetary and expanding consciousness to the stars.\nSpaceXSI is building Super Intelligence to help humanity understand the universe. Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. We're creating a powerful flywheel where more compute trains better models, better models power more useful products, and what we learn from people using those products shapes what we build next.\nSR. NETWORK ENGINEER\nSpaceXSI is building and operating large-scale networks that underpin training and inference infrastructure, including high-performance / supercompute fabrics that connect GPU clusters, plus the core, edge, and datacenter networks that keep that infrastructure reachable and reliable.\nWe need a Network Engineer who is strong on fundamentals and comfortable owning production network design, deployment, and operations end to end. This is a hands-on engineering seat - not a NOC technician role and not a network-software (telemetry/ZTP platform) SWE role. You will design and build networks, qualify platforms, ship changes safely, and keep availability and performance high as we scale.\nTravel to Memphis (and other build sites) may be required for capacity build-outs. You will participate in a team on-call rotation.\nRESPONSIBILITIES:\nDesign, deploy, and operate production datacenter and campus/core networks at scale\nOwn routing and switching configuration standards (BGP and at least one IGP such as OSPF or IS-IS), including change design, peer reviews, and execution\nQualify new network platforms, optics, and topologies; contribute to architecture and capacity planning\nBuild and improve monitoring, alerting, and operational documentation so issues are caught and fixed quickly\nTroubleshoot Layer 2/Layer 3 incidents end to end - from link flaps and optics through routing and traffic engineering - and drive root cause and lasting fixes\nAutomate repetitive network tasks with Python, Ansible, or similar tooling where it reduces toil\nPartner with compute, facilities, and software teams during cluster build-outs and maintenance windows\nSupport high-performance / supercompute network environments (Ethernet AI/HPC fabrics, RoCE/RDMA-capable designs) as part of the broader network estate\nBASIC QUALIFICATIONS:\nBachelor’s degree or higher in computer science, computer engineering, electrical engineering, or engineering discipline\n5+ years of experience designing and/or operating production networks in a datacenter, ISP, cloud, or large enterprise environment\nPREFERRED SKILLS AND EXPERIENCE:\nExperience troubleshooting live production network incidents and participating in on-call\nExperience with BGP and at least one interior routing protocol\nStrong written and verbal communication; clear change docs and incident notes\nWorking knowledge of TCP/IP, VLANs, EVPN/VXLAN or equivalent datacenter overlays, and optics / high-speed Ethernet\nExperience with modern datacenter vendors (e.g. Arista, Cisco, Juniper, Nvidia/Mellanox)\nFamiliarity with high-performance or supercompute networking (RoCEv2, congestion control, GPU cluster fabrics) - useful context for our environment, not a hard filter\nNetwork automation (Python, Ansible, Terraform, or similar) used in production\nExperience with EVPN, leaf-spine, and large-scale Ethernet fabrics\nPrior work supporting rapid datacenter or cluster capacity build-outs\nDeep specialist RoCE/NCCL ownership\nADDITIONAL REQUIREMENTS:\n Willing to work onsite in Dublin\nSpaceXSI is an equal opportunity employer. For details on data processing, view our Recruitment Privacy Notice.","description_format":"text","description_chars":3956,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["LLM & Generative AI","Foundation Models","AI Research Labs"],"lifecycle":[{"event":"open","at":"2026-09-14T14:49:09Z"}],"visa":[],"liveness":{"score":59,"band":"ok","label":"Likely open","p_open":1,"p_active":0.793,"p_room":0.75,"age_days":52,"expected_fill_days":66,"reasons":["conf:0","velocity","win:late","comp:brand"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/xai-network-engineer-3","json_url":"https://alion.io/job/xai-network-engineer-3.json","meta":{"generated_at":"2026-11-07T05:46:16Z","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":13982,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-08T00:00:00Z"}},"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":28},"rest":"https://alion.io/mcp/rest/get_company?id=28"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxai-network-engineer-3"},{"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%2Fxai-network-engineer-3"},{"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%2Fxai-network-engineer-3"},{"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/xai-network-engineer-3\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxai-network-engineer-3"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":908169}},{"tool":"search_jobs","arguments":{"company":"x.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":908169},"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. Docs: https://alion.io/developers"}}