pWe are looking for a strongSenior Network Interconnect Engineer. /strong The successful candidate will design, deploy, and operate production-grade strongInfiniBand /strong and strongAI-optimized Ethernet /strong fabrics, ensuring scalability, performance, and reliability for research institutions and enterprise customers across Italy and Europe. /ppThe role involves designing and operating Spine-Leaf datacenter fabrics (InfiniBand and Ethernet with BGP/EVPN/VXLAN), leading technical escalations with NVIDIA Networking, and evaluating next-generation interconnect technologies such as DPUs, CXL fabrics, photonic networking, and Ultra Ethernet. /ppbr / /ppstrongKey Responsibilities: /strong /pulliDesign datacenter fabric and HPC interconnect end-to-end: topology selection (fat-tree, dragonfly, rail-optimized), oversubscription, bisection bandwidth targets, failure-domain design, and integration with storage backends (Ceph, VAST, WEKA, BeeGFS over IB / RoCE). /liliBring up, tune, troubleshoot, and operate strongInfiniBand XDR / NDR /strong (Quantum-3 / Quantum-2) and strongEthernet /strongAI-optimized fabrics: subnet manager (OpenSM) configuration, partitioning, QoS, adaptive routing, congestion control, and performance counters. /liliDesign and operate Spine-Leaf datacenter fabrics with strongBGP / EVPN / VXLAN /strong, multi-fabric and multi-site interconnect, across switch ecosystems including Mellanox SN, SONiC, Dell OS10 etc. /liliOwn the physical layer of AI Factory and HPC cluster networking: optical cabling design (BiDi, parallel optics, DAC, AOC), OOB management, patching matrix, and power and space planning in collaboration with the Operations and Facilities teams. /liliInstrument fabric observability: sFlow, IPFIX, streaming telemetry (gNMI), Prometheus exporters for switch fabric; br / correlate with the team’s monitoring stack and drive capacity planning. /liliContribute to RD and presales initiatives: author the networking sections of EuroHPC JU and EU bids; br / participate in technology scouting on DPU (BlueField-3+), CXL fabric, photonic interconnect, and Ultra Ethernet Consortium developments. /liliWrite and maintain strongrunbooks /strong — step-by-step operational procedures with explicit go / no-go gates and rollback paths — for fabric bring-up, upgrade, and incident response workflows.



/liliMentor junior and mid-level engineers in the team on advanced networking and fabric operations. /li /ulpbr / /ppstrongEducation: /strong /ppMaster’s degree or Ph.D. in Telecommunications, Computer Networks, Computer Science, or a related STEM field — or equivalent practical experience, including: /pullistrong4+ years /strong of hands-on engineering experience in datacenter networking and high-speed interconnect. /lilistrong2+ years /strong of direct experience operating InfiniBand fabrics in production (subnet management, troubleshooting, performance tuning). /lilistrong2+ years /strong of hands-on Spine-Leaf datacenter fabric design and operations at scale (BGP / EVPN). /li /ulpbr / /ppstrongSKILLS AND COMPETENCES /strong /ppbr / /ppstrongCore Technical Skills: /strong /pullistrongInfiniBand: /strongMellanox HCA (ConnectX-6 / 7 / 8, BlueField), Quantum-2 / 3 switches, OpenSM configuration and tuning, IB performance counters, IB-to-Ethernet gateway. /lilistrongEthernet AI fabric: /strongSpectrum-X, RoCEv2 with DCQCN / HPCC, PFC tuning, adaptive routing, congestion control. /lilistrongNetwork protocols: /strongBGP (including EVPN), OSPF, MP-BGP, VXLAN, Geneve, MLAG, MC-LAG, RSTP, LLDP. /lilistrongLinux networking: /strongnetlink, tc qdisc, eBPF for networking, XDP basics. /lilistrongAutomation Infrastructure as Code: /strongPython (production quality), Ansible with custom modules and Bash scripting. Go is a plus. /lilistrongProblem-Solving Documentation: /strongSystematic troubleshooting methodology across hardware, firmware, driver, and OS layers. Ability to write design documents, RCA reports, and runbooks. /lilistrongCommunication: /strongFluent English (working language with Mellanox / NVIDIA / Dell engineering); br / clear written and verbal communication for vendor, customer, and internal audiences. /li /ulpbr / /ppstrongNice-to-Have Skills:



/strong /ppstrongFabric management orchestration platforms /strong /pullistrongNVIDIA UFM /strong (Enterprise / Telemetry / Cyber-AI) for InfiniBand fabric management and anomaly detection. /lilistrongNVIDIA NetQ /strong for Cumulus / SONiC fabric telemetry. /lilistrongDorado Cruz /strong (Cruz Fabric Controller / Operations Center) for multi-vendor SONiC fabric orchestration. /liliExposure to intent-based platforms such as Juniper Apstra, Cisco Nexus Dashboard, or Arista CloudVision. /li /ulpbr / /ppstrongSoft Skills: /strong /pulliStrong technical leadership and team coordination skills. /liliExcellent communication and stakeholder management abilities. /liliMentoring mindset with a passion for developing team members. /liliStrong analytical, problem-solving, and decision-making skills. /liliAbility to prioritize, organize, and deliver results in dynamic environments. /liliCollaborative approach with experience working across cross-functional teams. /liliProactive attitude, strong sense of ownership, and commitment to continuous improvement. /liliAdaptability and resilience in fast-paced, mission-critical environments. /li /ulpbr / /ppstrongWorking environment: /strong /pullistrongRemote work /strong — Flexibility to work from anywhere in Italy, with no hybrid mandate; br / on-site presence required only about once a month, with travel covered by the company. /lilistrongObjective-based work /strong — Clear, measurable objectives reviewed and updated throughout the year, with a structured growth path and access to cutting-edge interconnect technology in production. /lilistrongOn-site missions /strong — The role involves periodic on-site engagements at customer and partner facilities in Italy and across the EU (cluster bring-up, vendor PoC, co-deployment), with travel covered by the company. /lilistrongRAL /strong: 50.000,00 € /li /ulpbr / /ppstrongEarly Career Opportunities /strong /ppWhile this position targets experienced engineers, strongwe are also building the next generation of networking specialists /strong. If you have a solid technical foundation, strong curiosity, and a passion for high-performance networking, we encourage you to apply even if you do not yet meet every requirement. Junior engineers will have the opportunity to grow through mentorship. /ppbr / /p

📌 Senior Network & Interconnect Engineer (Rubiera)
🏢 Azienda Anonima
📍 Rubiera