Network Engineer

Transaction Network Services (TNS) provides mission-critical connectivity solutions to the global financial markets. They are seeking a Network Engineer to support real-time trading and market data connectivity across highly available global networks, focusing on routing, switching, multicast, automation, and packet-level troubleshooting.

Responsibilities:

• Support add/move/change (MAC) activities across production financial‑markets networks
• Configure and troubleshoot Layer‑2 and Layer‑3 network services​
• Assist with BGP, OSPF, and IS‑IS routing changes and troubleshooting
• Support NAT configuration and fault isolation (static and dynamic NAT)
• Assist with IP multicast (IGMP, PIM) used for market data distribution
• Perform packet capture and traffic analysis (tcpdump, Wireshark or equivalent)
• Assist with Layer‑1 troubleshooting including physical connectivity and latency‑sensitive paths
• Follow disciplined change, documentation, and operational processes
• Work with senior engineers on automation‑enabled configuration and validation
• Exposure to network‑as‑code practices using structured data (JSON/YAML)
• Assist with templated configuration and automation workflows (e.g., Jinja2, Ansible)
• Follow Git‑based version control and peer‑review workflows for network changes

Requirements:

• 3+ years of experience supporting global IP networks
• Hands-on experience with Cisco, Juniper, and Arista platforms
• Strong Layer-2 knowledge (VLANs, trunking, STP, LACP)
• Strong Layer-3 fundamentals (BGP basics, OSPF/IS-IS concepts)
• NAT fundamentals and troubleshooting experience
• Multicast fundamentals (IGMP, PIM)
• Packet capture and analysis skills
• Strong written and verbal communication skills
• CCNA or CCNP
• NCIA or JNCIP