Network Engineer

We are seeking a highly skilled Network Engineer to design, operate, and optimize a high-availability network infrastructure supporting mid-frequency trading operations. The role is critical to ensuring resilient connectivity across internal networks, global exchanges, co-location facilities, and inter-office links in a fast-paced, mission-critical environment. The ideal candidate will have strong hands-on experience with enterprise and trading-grade networking, L2/L3 troubleshooting, multicast market data distribution, and operational support in production systems.

The core responsibilities for the job include the following:

Network Design and Operations:

• Design, manage, and optimize high-availability network infrastructure, including routers, switches, firewalls, load balancers, VPNs, and QoS policies for trading and corporate environments.
• Ensure reliable, low-latency connectivity between internal systems, global exchanges, co-location sites, and inter-office networks.
• Configure and maintain multicast routing (PIM, IGMP) for market data distribution and order execution systems.

Trading and Co-Location Support

• Manage connectivity with domestic and international exchanges across multiple regions.
• Oversee co-location site operations, including power, space, rack capacity planning, access management, vendor coordination, and procurement.
• Act as a technical point of contact for telecom providers, data center operators, and hardware vendors.

Monitoring, Troubleshooting, and Support:

• Provide L2/L3 production support in a live trading environment.
• Monitor network performance and availability; proactively identify and resolve issues.
• Troubleshoot complex network problems using tools such as Wireshark, Tcpdump, Iperf, and SNMP-based monitoring systems.
• Participate in incident response, root cause analysis, and post-incident reviews.

Automation and Continuous Improvement:

• Automate network configuration, deployment, and monitoring tasks using Python and/or shell scripting.
• Perform firmware upgrades, configuration changes, and capacity planning with minimal downtime.
• Drive continuous improvements in network reliability, performance, and scalability.

Systems and Collaboration:

• Provide basic support for Linux-based trading systems (Ubuntu/CentOS), including hardware changes, OS-level configuration, and application support as required.
• Maintain accurate documentation for network architecture, configurations, procedures, and incident logs.
• Collaborate closely with trading desks, quant teams, system administrators, and external vendors.
• Travel occasionally to co-location or data center sites as business needs require.

Requirements:

• Bachelor's degree in computer science, electrical engineering, computer engineering, or a related IT discipline.
• 3-5 years of hands-on experience in network engineering or network support roles.
• Strong understanding of TCP/IP, routing, switching, VLANs, BGP, OSPF, and network security fundamentals.
• Experience working in high-availability or mission-critical environments; exposure to trading or financial services is highly desirable.

Preferred Skills and Experience:

• Hands-on experience with Cisco and/or Arista routers and switches.
• Experience managing firewalls, VPNs, and network security policies.
• Strong knowledge of multicast networking (PIM, RP, MSDP, IGMP).
• Good to have CCNA / CCNP (Routing and Switching) certification or equivalent practical knowledge.
• Proficiency with Linux systems (Ubuntu, CentOS/RHEL).
• Experience with network automation using Python or shell scripting.
• Familiarity with performance and diagnostic tools such as Wireshark, tcpdump, and Iperf.
• Ability to work under pressure in time-sensitive environments with strong problem-solving and decision-making skills.
• Clear communication skills and the ability to collaborate effectively across technical and non-technical teams.