Senior Network Engineer - Carrier Backbone (Juniper)

About the role

FDC Servers is a global dedicated server, colocation and IP transit provider running its own international backbone across 27+ points of presence, with over 100 Tbps of external capacity. It is expanding its network engineering team and is looking for a Senior Network Engineer with a genuine carrier or service provider background, working hands-on in a Tier 1 or Tier 2 carrier, IP transit provider or large ISP backbone on Juniper at scale. The role is fully remote and open to candidates based in Europe or North America.

Key responsibilities

• Act as the ultimate L3 escalation point for complex routing, switching and backbone incidents across a global carrier-grade network.
• Configure, maintain and optimise core, aggregation and edge Juniper (QFX, PTX) routers and switches, with occasional support for Cisco platforms (IOS-XR, NX-OS).
• Manage transit, peering and IX relationships at the technical level: BGP policy, communities, traffic engineering and path optimisation across multiple Tier 1 carriers.
• Lead mitigation during severe network anomalies and DDoS events using BGP Flowspec, RTBH and traffic scrubbing.
• Drive capacity planning, redundancy reviews, circuit turn-ups, backbone migrations and major Junos software upgrades.
• Peer-review complex network change scripts (Juniper set-style) before maintenance windows and mentor Tier 2 engineers.

Required profile

• Prior employment with a Tier 1/Tier 2 carrier, IP transit provider, ISP or large hosting/data centre operator; enterprise-only backgrounds are not considered.
• Expert hands-on Juniper Junos experience in a live SP production environment (QFX/PTX).
• Deep knowledge of ISP protocols: ISIS, BGP, IP/MPLS, SR-MPLS, SRv6, EVPN, and practical experience with BGP Flowspec, L3VPN/L2VPN and traffic engineering.
• Experience evaluating SP-grade hardware limits (line cards vs ASIC/SoC, FIB scale) and advanced L2/L3 troubleshooting.
• Strong risk assessment, professional English, and preferred: JNCIP-SP or JNCIE-SP, Ansible/NetBox/Python/Git, Cisco IOS-XR/NX-OS, and directing remote hands teams.

What we offer

• Fully remote, long-term independent contractor engagement.
• Pay by agreement, based on experience.