Senior Network Engineer - HPC/ AI/ GPU

aap3 Recruitment; Greater London; On-site; GBP 60,000 - 90,000; Full time

Job summary

An established industry player is seeking a Senior Network Engineer to architect and manage cutting-edge networks for AI workloads. This role involves designing ultra-low-latency network fabrics, deploying advanced routing technologies, and automating infrastructure. You will collaborate with Systems, DevOps, and AI teams to ensure high-throughput networks that support GPU clusters. This position offers an exciting opportunity to work in a dynamic environment focused on next-generation technologies. If you're passionate about network engineering and eager to make a significant impact, this role is perfect for you.

Qualifications

• 3–5+ Jahre Erfahrung im HPC oder AI Networking, Unterstützung von GPU-Clustern.
• Tiefes Wissen über BGP, EVPN, VXLAN und MPLS.

Responsibilities

• Entwerfen und Skalieren von Leaf-Spine-Fabriken mit Mellanox und Cumulus.
• Automatisierung der Infrastruktur mit Ansible und Python.

Skills

BGP

EVPN

VXLAN

MPLS

Linux CLI

Network Automation (Ansible, Python)

HPC Networking

AI Workloads

Tools

Mellanox Switches

Cumulus Linux

Juniper PTX Routers

Juniper SRX Firewalls

Job description

This job description from aap3 Recruitment provides a comprehensive overview of the Senior Network Engineer role, including responsibilities, qualifications, and additional details. It employs appropriate HTML tags such as

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  Note: The actual pay will be based on your skills and experience. Please talk with your recruiter to learn more.

  Base pay range

  Help build the ultra-fast network backbone behind next-generation AI.

  6-month contract based in London.

  About the role

  As a Senior Network Engineer, you’ll architect, deploy, and operate the ultra-low-latency network fabric that powers our GPU clusters. You'll work closely with our Systems, DevOps, and AI Platform teams to design fault-tolerant, high-throughput networks tailored for cutting-edge machine learning workloads.

  What you’ll do

  • Design and scale leaf-spine fabrics with Mellanox + Cumulus
  • Deploy and manage Juniper PTX routers and SRX firewalls
  • Automate infrastructure with Ansible and Python
  • Monitor and tune networks for high-volume AI workloads
  • Own incident response and drive root-cause analysis

  What you’ll bring

  • 3–5+ years in HPC or AI networking, supporting GPU clusters
  • Deep knowledge of BGP, EVPN, VXLAN, MPLS
  • Hands-on experience with Mellanox switches, Cumulus Linux, and Juniper
  • Strong Linux CLI and network automation skills (Ansible, Python)

  Bonus skills

  • JNCIE/CCIE, hybrid cloud networking (AWS/Azure), and experience with network telemetry

  Additional information

  If this role sounds like a fit, please connect with us. Referrals increase your chances of interviewing by 2x. Get notified about new Network Engineer jobs in the London area, UK.