Note: The job is a remote job and is open to candidates in USA. asobbi is a Neocloud building purpose-built GPU infrastructure for AI workloads, operating large-scale clusters for demanding training and inference customers. The Senior Network Engineer will design, build, automate, and operate high-speed network fabrics across multi-site data centers, including RDMA, InfiniBand, RoCE, Juniper routing, leaf-spine fabrics, observability, security, and physical data center infrastructure.
Responsibilities
- Design, configuration, deployment, and tuning of high-speed network infrastructure for GPU training and inference workloads across our clusters
- The GPU fabric itself: RDMA over InfiniBand and RoCEv2, including congestion control, PFC/ECN tuning, and Pkey and partitioning for multi-tenant isolation
- Edge routing, firewalling, and multi-homed connectivity on Juniper, including BGP, our public IP space, and upstream carrier relationships
- Leaf-spine data center fabrics on NVIDIA/Mellanox Cumulus Linux, and Arista as we bring up AMD Helios racks, using EVPN/VXLAN where it fits
- Network automation and infrastructure-as-code: codifying device configs, fabric buildout, and validation in Python, Ansible, and Terraform rather than keeping it in people's heads
- Observability and troubleshooting across Prometheus, Grafana, Checkmk, Wireshark, and tcpdump, with a clear point of view on what good network monitoring looks like
- Network security posture in partnership with our security engineers: firewall policy, IDS/IPS, WireGuard VPN, and controls that hold up to SOC 2 and HIPAA
- Data center design: structured fiber and copper cabling, and physical-layer troubleshooting during new site and cluster buildouts
Skills
- 10+ years designing, operating, and troubleshooting production network infrastructure at scale
- Deep understanding of TCP/IP, BGP, VLANs, VXLAN/EVPN, and modern data center fabric design
- Hands-on experience with high-performance networking for HPC or AI/ML: RDMA, InfiniBand, and/or RoCE, and the tuning that makes them perform
- Production experience with NVIDIA/Mellanox Cumulus Linux and/or Arista EOS in leaf-spine topologies
- Strong Juniper routing and firewall experience (Junos)
- Fluency with network automation and IaC: Python, Ansible, Terraform, and Bash, with a bias toward codifying operational knowledge
- Comfortable with packet-level troubleshooting (Wireshark, tcpdump) and metrics-based troubleshooting (Prometheus, Grafana)
- Willingness to travel to data centers for buildouts and physical-layer work
- Clear, direct written communication; much of our team and work is async
Company Overview