Senior Network & Interconnect Engineer

Vedi l’offerta su Go Lavoro: golavoro.it/annuncio-lavoro/79d4rz

We are looking for aSenior Network & Interconnect Engineer.The successful candidate will design, deploy, and operate production-gradeInfiniBandandAI-optimized Ethernetfabrics, ensuring scalability, performance, and reliability for research institutions and enterprise customers across Italy and Europe.
The 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.
Key Responsibilities:
Design 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).
Bring up, tune, troubleshoot, and operateInfiniBand XDR / NDR(Quantum-3 / Quantum-2) andEthernetAI-optimized fabrics: subnet manager (OpenSM) configuration, partitioning, QoS, adaptive routing, congestion control, and performance counters.
Design and operate Spine-Leaf datacenter fabrics withBGP / EVPN / VXLAN, multi-fabric and multi-site interconnect, across switch ecosystems including Mellanox SN, SONiC, Dell OS10 etc.
Own 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.
Instrument fabric observability: sFlow, IPFIX, streaming telemetry (gNMI), Prometheus exporters for switch fabric; correlate with the team's monitoring stack and drive capacity planning.
Contribute to R&D; and presales initiatives: author the networking sections of EuroHPC JU and EU bids; participate in technology scouting on DPU (BlueField-3+), CXL fabric, photonic interconnect, and Ultra Ethernet Consortium developments.




Write and maintainrunbooks— step-by-step operational procedures with explicit go / no-go gates and rollback paths — for fabric bring-up, upgrade, and incident response workflows.
Mentor junior and mid-level engineers in the team on advanced networking and fabric operations.
Education:
Master's degree or Ph.D. in Telecommunications, Computer Networks, Computer Science, or a related STEM field — or equivalent practical experience, including:
4+ yearsof hands-on engineering experience in datacenter networking and high-speed interconnect.
2+ yearsof direct experience operating InfiniBand fabrics in production (subnet management, troubleshooting, performance tuning).
2+ yearsof hands-on Spine-Leaf datacenter fabric design and operations at scale (BGP / EVPN).
SKILLS AND COMPETENCES
Core Technical Skills:
InfiniBand:Mellanox HCA (ConnectX-6 / 7 / 8, BlueField), Quantum-2 / 3 switches, OpenSM configuration and tuning, IB performance counters, IB-to-Ethernet gateway.
Ethernet AI fabric:Spectrum-X, RoCEv2 with DCQCN / HPCC, PFC tuning, adaptive routing, congestion control.
Network protocols:BGP (including EVPN), OSPF, MP-BGP, VXLAN, Geneve, MLAG, MC-LAG, RSTP, LLDP.
Linux networking:netlink, tc qdisc, eBPF for networking, XDP basics.
Automation & Infrastructure as Code:Python (production quality), Ansible with custom modules and Bash scripting.
Go is a plus.
Problem-Solving & Documentation:Systematic troubleshooting methodology across hardware, firmware, driver, and OS layers.
Ability to write design documents, RCA reports, and runbooks.
Communication:Fluent English (working language with Mellanox / NVIDIA / Dell engineering); clear written and verbal communication for vendor, customer, and internal audiences.
Nice-to-Have Skills:




Fabric management & orchestration platforms
NVIDIA UFM(Enterprise / Telemetry / Cyber-AI) for InfiniBand fabric management and anomaly detection.
NVIDIA NetQfor Cumulus / SONiC fabric telemetry.
Dorado Cruz(Cruz Fabric Controller / Operations Center) for multi-vendor SONiC fabric orchestration.
Exposure to intent-based platforms such as Juniper Apstra, Cisco Nexus Dashboard, or Arista CloudVision.
Soft Skills:
Strong technical leadership and team coordination skills.
Excellent communication and stakeholder management abilities.
Mentoring mindset with a passion for developing team members.
Strong analytical, problem-solving, and decision-making skills.
Ability to prioritize, organize, and deliver results in dynamic environments.
Collaborative approach with experience working across cross-functional teams.
Proactive attitude, strong sense of ownership, and commitment to continuous improvement.
Adaptability and resilience in fast-paced, mission-critical environments.
Working environment:
Remote work— Flexibility to work from anywhere in Italy, with no hybrid mandate; on-site presence required only about once a month, with travel covered by the company.
Objective-based work— Clear, measurable objectives reviewed and updated throughout the year, with a structured growth path and access to cutting-edge interconnect technology in production.
On-site missions— 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.
RAL: ******,00 €
Early Career Opportunities
While this position targets experienced engineers,we are also building the next generation of networking specialists.
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.

Vedi l’offerta su Go Lavoro: golavoro.it/annuncio-lavoro/79d4rz