{"id":1102602,"url":"https://alion.io/job/firmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect","title":"Senior Platform Reliability Engineer, Fabric & Interconnection","company":{"id":63306,"name":"Firmus Technologies","domain":"firmus.ai","url":"https://alion.io/company/firmus-technologies","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Sydney, Australia"],"countries":["AU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":72000,"max_usd":199000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3508},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"InfiniBand","optional":false},{"name":"NVLink","optional":false},{"name":"Python","optional":false},{"name":"Self-Healing","optional":false}],"status":"live","first_seen_at":"2026-09-21T23:54:16Z","employer_posted_date":"2026-11-04","last_verified_at":"2026-11-10T16:21:28Z","board_verified":true,"closed_at":null,"days_open":49,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":49},"description":"Firmus Technologies\nFirmus Technologies is a global leaderpioneering the development and operation of efficient AI infrastructure across Asia Pacific. \nFounded in Australia in 2019, our mission is to create the most efficient AI infrastructure by combining cutting-edge technology with a steadfast commitment to sustainability. \nAt Firmus, we are unique in our approach. We design, build, and operatea new class of digital infrastructure - the AI Factory. Through our model-to-grid technology approach, we have pushed the boundaries of multi-generational liquid cooling systems, energy management, AI software orchestration, and construction. For our customers, this approach allows us to make every watt count and deliver low-cost AI tokens globally. \nFirmus AI Cloud\nOur large-scale GPU cloud platform, Firmus AI Cloud, is purpose-built to deliver energy-efficient AI compute at scale to customers. \nIt empowers developers, enterprises, educational institutions, and government users to train and deploy AI models with unmatched efficiency and cost savings. With an ever-growing suite of services and applications, we are committed to delivering a cloud experience that is market-leading, proprietary, and built to scale. \nAI FactoryOS Operations \nAI FactoryOS is Firmus' proprietary operating system for the AI Factory. It governs GPU telemetry, cooling, power and grid interaction as one integrated layer, so that every Firmus site can be optimised and monitored as a single system. \nAI FactoryOS Operations runs that platform in production and owns the 24/7 reliability of AI FactoryOS, Firmus AI Cloud and the platforms built on them, together with the service levels the estate is measured against. \nThe remit is an engineering one. The function builds the guarded automation, remediation and operational tooling that turn manual response into a software-defined capability, and builds and operates the shared services the estate's own operation depends on. The function works closely with the engineering teams that build the platform, supplying the production evidence that shapes what they fix and what they build next. \nRole Summary \nFirmus runs large-scale, state-of-the-artAI infrastructure built on the latest generation of GPU rack-scale systems and operatedas one estate to power the next generation of AI innovation. The Senior Platform Reliability Engineer, Fabric and Interconnect, owns the reliability of the fabrics this estate runs on: the GPU-to-GPU interconnect domains, the high-performance network fabrics carrying training and inference traffic, and the DPU-based host networking that binds compute to the rest of the platform. \nThis is a hands-on senior role with deep technical expertise. Automation is a first-class part of the role: the team builds and maintains the guarded automation and remediation tooling that turn manual fabric response into a self-healing capability, and the role engages fabric vendors at engineering level, reproducing faults to their standard and holding them to their answers. \nKey Responsibilities \nResponsible for the reliable operation, automation and continuous improvement of the estate's GPU interconnect and network fabrics (for example NVLinkand NVSwitchdomains, InfiniBandand Spectrum-X). \nBuild and maintainthe guarded automation and remediation tooling for fabric faults, contributing to the software-driven remediation of AI clusters, including fault isolation and fabric reconvergence. \nDiagnose and tune performance across the interconnect stack, from applicationcollective communication down to link level, working with technologies including NVLink, InfiniBand, RoCE and congestion control tuning. \nOperate DPU-based host networking across the fleet, including offload path configuration and driver and firmware compatibility. \nExecute firmware upgrade waves, fabric expansions and capacity changes to the supported paths and scaling patterns defined by AI Infrastructure, owning the production window, the staged or canary path, verification against declared success criteria, and rollback execution. \nProvide the deepest technical expertisefor fabric and interconnect faults, correlating a collective communication failure to a specific physical link and diagnosingthe faults that require internals-level knowledgeto root cause, and driving the permanent fix to closure through AI Infrastructure. \nLead vendor escalations at engineering level, reproducing faults to the vendor's standard and pushing back credibly when a diagnosis does not explain the observed behaviour. \nLead technical recovery during major fabric incidents, drive the changes that remove repeat causes, share the follow-the-sun on-call roster, and mentor the engineers who carry frontline diagnosis, documenting operational procedures, runbooksand performance results. \nSkills & Experience \nStrong skills in high-performance networking and systems engineering, with 8+ years of experience including substantial ownership of production network or interconnect infrastructure in a 24/7 environment. \nDeep operational experience with high-performance GPU interconnect fabrics (for example NVLinkand NVSwitch), including domain topology and failure diagnosis. \nExtensive experience with high-performance networking fabrics (for example InfiniBand or RoCE-based Ethernet such as NVIDIA Spectrum-X), including routing internals and congestion control tuning. \nExperience with DPU or SmartNIC-based host networking, including offload paths and driver and firmware coordination. \nExperience planning and executing firmware upgrade waves and capacity expansions on production fabrics with defined rollback. \nStrong skills in infrastructure automation and infrastructure-as-code practices, with change delivered through peer review and progressive rollout. \nPractical experience with scripting or programming for operational automation and tooling, such as Python, Goor Bash. \nProven ability to act as a senior escalation point in production, including major incident response, on-call participation, vendor escalation at engineering level, and the production of runbooks that others can execute successfully. \nClear technical judgement and communication skills, with the ability to explain complex fabric failures to engineersand non-specialists. \nPreferred Experience \nExperience operating fabrics for large-scale distributed training or inference workloads. \nExperience with NVIDIA rack-scale or multi-node GPU systems and their interconnect topology. \nExperience in a multi-tenant service provider, cloudor colocation environment. \nKnowledge of data centre and hardware fundamentals, including cabling and optics, firmware managementand hardware fault workflows. \nRelevant vendor certification. \nLocation & Reporting \nLocation: Based in Australia or Singapore, with travel to Australian AI Factory sites as required. \nOn-call: The function runs 24/7. First line monitoring and first response sit with the operations centre. This role shares the after-hours escalation roster for its domain with the other senior engineers in the function. \nReporting to: Reportsto the Head of AI FactoryOSOperations whilethe function is being established, working under broad directionwith a high degree of autonomyand direct access to the decision makers. As the function reaches its planned structure, the role will report to the Infrastructure Operations Manager, with the Head of AI FactoryOSOperations remainingaccountable for the function. The scope, level and remit of the role do not change under either arrangement. \nEmployment Basis\nPermanent full-time\nDiversity\nAt Firmus, we are committed to building a diverse and inclusive workplace. We encourage applications from candidates of all backgrounds who are passionate about creating a more sustainable future through innovative engineering solutions.\nJoin us in our mission to revolutionize the AI industry through sustainable practices and cutting-edge engineering. Apply now to be part of shaping the future of sustainable AI infrastructure.","description_format":"text","description_chars":8027,"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":"Australia","iso":"AU","kind":"country"},{"name":"Singapore","iso":"SG","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Interconnect","Data Centers & Colocation","Cloud Platforms (IaaS & PaaS)","AI Compute & Inference"],"lifecycle":[{"event":"open","at":"2026-09-22T01:10:51Z"}],"visa":[],"liveness":{"score":65,"band":"ok","label":"Likely open","p_open":1,"p_active":0.866,"p_room":0.75,"age_days":49,"expected_fill_days":67,"reasons":["conf:0","velocity","win:late"],"computed_at":"2026-11-10T06:52:35Z"},"pay":null,"html_url":"https://alion.io/job/firmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect","json_url":"https://alion.io/job/firmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect.json","meta":{"generated_at":"2026-11-10T21:12:05Z","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":14669,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-11T00:00:00Z"}},"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":63306},"rest":"https://alion.io/mcp/rest/get_company?id=63306"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffirmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect"},{"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%2Ffirmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect"},{"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%2Ffirmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect"},{"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/firmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffirmus-technologies-senior-platform-reliability-engineer-fabric-and-interconnect"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":1102602}},{"tool":"search_jobs","arguments":{"company":"firmus.ai","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":1102602},"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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