Senior Network Infra Engineer: AI-Driven Connectivity

fal - Features & Labels; United States; Remote; USD 180,000 - 240,000; Full time

Benefits offered by this job

Visa sponsorship

Relocation to San Francisco

Health, dental, and vision insurance (

Job summary

fal is building the public and private network infrastructure powering its data centers and cloud environments, delivering a fast, secure, and observable networking fabric for the next generation of AI-native products.

You’ll work across the networking stack, from BGP and private peering to kernel tuning, with a focus on automation and reliability to support scalable, high-performance workloads.

Qualifications

• 5+ years building and operating production network infrastructure.
• Strong Linux networking: routing tables, policy routing, network namespaces, bonding, VLANs, bridges, firewalling, NAT, conntrack.
• Deep BGP knowledge: route selection, communities, filtering, convergence, multipath, troubleshooting.
• Experience managing ASNs, public IP space, BGP announcements, IPAM, RPKI/ROAs, 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, IRQ affinity.
• Packet-level troubleshooting: iproute2, tc, ethtool, tcpdump, Wireshark, mtr.
• Ansible or equivalent network configuration automation.
• EVPN as a VXLAN control plane.
• FRRouting, BIRD, or similar software-routing platforms.
• AWS Direct Connect, Google Cloud Interconnect, Azure ExpressRoute.
• Internet exchanges, cross-connects, route servers, colocation networking.
• DDoS detection, mitigation, scrubbing, BGP-based traffic diversion.
• eBPF, XDP, DPDK
• NetBox, Nautobot, Nornir
• Authoritative or recursive DNS infrastructure at scale
• Network hardware: Arista, Juniper, Cisco
• Kubernetes networking, service load balancing, CNI
• Python or Go

Responsibilities

• Design, build, validate, and operate public and private networks across the public platform and private compute clusters.
• Use AI aggressively to automate and accelerate network provisioning, configuration, validation, monitoring, and recovery.
• Manage ASNs, public IP prefixes, and private address space (allocation, registration, announcement, lifecycle).
• Build and operate BGP routing: 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 sound network designs

Skills

Linux networking

BGP

VXLAN

IPsec/WireGuard

DNS

Ansible automation

EVPN

FRRouting/BIRD

Cloud interconnects

eBPF

NetBox

Nautobot

Nornir

Kubernetes networking

Python/Go

Tools

Arista

Juniper

Cisco

Job description

fal is building the public and private network infrastructure powering its data centers and cloud environments, delivering a fast, secure, and observable networking fabric for the next generation of AI-native products.

You’ll work across the networking stack, from BGP and private peering to kernel tuning, with a focus on automation and reliability to support scalable, high-performance workloads.