Senior/Staff Network Infrastructure Engineer
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Job Description
Network infrastructure engineer building connectivity for fal’s generative media platform. Designing BGP, cloud, overlay, DNS, and high-performance Linux networks.
Responsibilities:
- Design, build, validate, and operate public and private networks across fal’s public platform and private compute clusters
- Automate and accelerate network provisioning, configuration, validation, monitoring, and recovery using AI
- Manage ASNs, public IP prefixes, and private address space
- Build and operate BGP routing, including route policies, communities, filtering, traffic engineering, and failover
- Announce customer and company IP ranges from physical infrastructure and cloud providers, including BYOIP integrations
- Establish private peering with customers, partners, data centers, internet exchanges, and cloud providers
- Build private and overlay networks using VXLAN, IPsec, WireGuard, and Tailscale
- Operate DNS networking patterns including anycast DNS and mDNS
- Tune the Linux networking stack for high throughput, low latency, and large connection counts
- Build network observability and diagnostics using metrics, logs, flow data, active probes, and packet captures
- Develop reusable tooling, standards, documentation, and runbooks
- Collaborate with customers and internal teams to translate connectivity, security, isolation, and performance requirements into network designs
Requirements:
- 5+ years building and operating production network infrastructure
- Strong Linux networking: routing tables, policy routing, network namespaces, bonding, VLANs, bridges, firewalling, NAT, and conntrack
- Deep BGP knowledge: route selection, communities, filtering, convergence, multipath, and troubleshooting
- Experience managing ASNs, public IP space, BGP announcements, IPAM, RPKI/ROAs, and IRR records
- Experience designing private IPv4/IPv6 address plans and preventing cross-customer/region conflicts
- Production VXLAN overlay network experience
- Production IPsec, WireGuard, or Tailscale experience
- Experience with anycast DNS and mDNS
- Experience with private peering and cloud provider interconnects
- Linux networking performance tuning: congestion control, queue disciplines, socket buffers, MTU, NIC offloads, RSS/RPS/XPS, and IRQ affinity
- Packet-level troubleshooting using iproute2, tc, ethtool, tcpdump, Wireshark, and mtr
- Ansible or equivalent network configuration automation
- United States work authorization and visa sponsorship status are requested in the application form
Benefits:
- Equity offered
- Remote work arrangement
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