Network Security Engineer

We are seeking a Network Security Engineer to design, build, and operate critical production network infrastructure supporting a global trading environment. This is a hands-on role within a small, high-performing infrastructure team. You will contribute to architectural decisions, deliver projects end-to-end, and support systems used directly by trading and research teams globally. The role demands strong technical depth, operational discipline, and a structured approach to troubleshooting. You must be comfortable operating in a production environment where stability, performance, and controlled change management are essential.

Responsibilities: Design, implement, and support resilient enterprise network infrastructure across data center and cloud environments Contribute to network architecture and capacity planning in collaboration with global infrastructure teams Configure and manage routing and switching across core, edge, and data center networks (EIGRP, BGP, OSPF, VLANs, STP) Support global WAN connectivity, including carriers, exchanges, and third-party connectivity providers Monitor performance and availability; troubleshoot complex production issues and perform structured root cause analysis Implement and maintain network security controls, including segmentation, firewalls, and access policies Maintain accurate documentation, network diagrams, and operational standards Participate in an on-call rotation and provide escalation support for critical production incidents

Experience: 5+ years of hands-on experience in network engineering within complex, high-availability production environments and university degree in related domain. Strong expertise in routing and switching (EIGRP, BGP, OSPF, VLANs, STP, multicast) Proven experience designing enterprise network architecture and performing capacity planning . SASE experience with tools like (Cato, Zscaler) Hands-on experience with NGFW (Palo Alto preferable) Strong troubleshooting capability across layers 1?4 Experience with packet capture and analysis tools such as tcp dump and Wireshark Solid understanding of network security principles and implementation Experience managing WAN connectivity and working with carriers Experience operating within structured change control and incident management processes