Network Security Engineer

Role & responsibilities

Network Operations & Infrastructure Management • Administer, monitor, troubleshoot, and maintain global enterprise network infrastructure. • Ensure availability, performance, resilience, capacity, and security across production, staging, DR, and corporate environments. • Perform operational maintenance, upgrades, patching, configuration management, and documentation updates. Firewall & Security Administration • Administer Cisco FTD and ASA firewall platforms. • Implement firewall policy and rule changes through approved change processes. • Troubleshoot security, segmentation, compliance, and connectivity-related issues. Routing, Switching & Network Services • Administer Cisco Catalyst 3850 and 9300 switching platforms. • Configure and support Layer 2/3 networking, VLANs, BGP, multicast routing, and high-availability network solutions. • Support and troubleshoot enterprise routing and switching environments. AWS Networking & Cloud Connectivity • Manage highly available connectivity between on-premises environments and AWS. • Maintain AWS Direct Connect and associated BGP routing configurations. • Troubleshoot hybrid cloud connectivity and performance issues involving AWS-hosted services. Cato Networks (SD-WAN / SASE) • Administer Irdetos Cato Networks environment for office connectivity, remote access, VPN, and AWS network connectivity. • Configure segmentation, security policies, access controls, routing, and traffic optimization within Cato. • Troubleshoot connectivity, performance, and security issues across the Cato SD-WAN/SASE environment. Incident, Problem & Change Management • Respond to incidents, service requests, emergency support, and major incident recovery activities. • Conduct root cause analysis and contribute to problem management. • Execute and document network changes through established change control procedures. ________________________________________ Required Skills The contractor should bring senior-level hands-on experience in Cisco networking and firewalls, BGP, VLANs, Layer 2/3 networking, AWS Direct Connect, hybrid cloud connectivity, Cato Networks, SD-WAN/SASE, VPN services, network troubleshooting, documentation, and ITIL-aligned incident, problem, and change management. ________________________________________ Preferred Experience • Customer-facing environments • Multi-site WAN environments • AWS-based production platforms • Participation in on-call rotations

Job Description: We are seeking an experienced Senior Network Infrastructure & Security Engineer to manage, support, and optimize enterprise network infrastructure across global environments. The ideal candidate will possess strong hands-on expertise in Cisco networking, firewall administration, cloud connectivity, SD-WAN/SASE platforms, and ITIL-based operational processes. This role is responsible for ensuring network availability, security, performance, and resilience across production, disaster recovery, and corporate environments.