Senior Network Engineer – Network Architect

Responsibilities

• Act as the subject matter expert for Sim Space network and network security infrastructure
• Design, implement, support, and secure enterprise network infrastructure and software‑defined networking solutions
• Configure and maintain complex VMware environments leveraging NSX‑T, DVS, and software‑defined networking technologies
• Contribute to the design and implementation of resilient, secure, and scalable network architectures
• Configure and troubleshoot virtual networking, VLANs, VRFs, traffic forwarding, and hybrid cloud connectivity
• Lead network modernization initiatives, including technology refreshes, architecture improvements, and capacity planning
• Troubleshoot all levels of network connectivity issues including, but not limited to, network outages, switch failures, network performance, NIC cabling, TCP/IP configuration, etc.
• Perform troubleshooting of complex network and security incidents including outages, performance issues, routing failures, VPN issues, and other network events
• Support enterprise LAN/WAN, internet connectivity, data center networking and cloud networking initiatives
• Manage and optimize secure web access technologies including content filtering, secure web proxy, SSL inspection, DLP, and zero‑trust remote access platforms
• Administer next‑generation firewall infrastructure, including firewall policies, ACLs, NAT, IPS/IDS, VPNs, routing, segmentation, and high‑availability configurations
• Manage web application firewall (WAF) and edge security technologies, including rulesets, custom protections, bot mitigation, and application‑layer threat prevention
• Support centralized logging, security monitoring, alerting, and threat analysis activities across network and security platforms
• Assess existing network and security technologies to identify opportunities for modernization, improved security posture, and operational efficiency
• Maintain documentation, standards, and operational procedures for network and security infrastructure
• Provide technical leadership, mentorship, and guidance to junior engineers and operational staff
• Participate in maintenance activities, infrastructure upgrades, and business‑driven technology projects

• At least 8 years of network engineering experience
• At least 5 years of hands‑on experience in network security or security infrastructure
• Strong understanding of enterprise networking concepts, protocols, and infrastructure design
• Deep knowledge of routing, switching, TCP/IP, DNS, BGP, OSPF, VLANs, VRFs, VPNs, and network segmentation
• Experience designing and supporting enterprise LAN, WAN, and data center network architectures
• Experience managing next‑generation firewalls, secure web gateways, web‑application firewalls, and zero‑trust security platforms
• Hands‑on experience with firewall policy management, NAT, IPS/IDS, VPN technologies, and routing protocols
• Strong understanding of web certificates, PKI, TLS/SSL encryption, certificate lifecycle management, and troubleshooting certificate‑related connectivity or inspection issues
• Experience with LAN/WAN design including IP allocations, segmentation, VLAN implementation, and hybrid cloud networking
• Proficiency with packet captures, traffic analysis, and network troubleshooting methodologies
• Familiarity with vulnerability management and security assessment tools
• Experience with monitoring and observability platforms
• Ability to lead technical implementations, infrastructure upgrades, and operational initiatives
• Ability to quickly learn and adapt to new technologies and platforms
• Strong written and verbal communication skills
• CCNP Enterprise, CCIE Enterprise Infrastructure, or equivalent networking certifications
• Experience with network automation frameworks and scripting technologies
• Experience supporting large‑scale enterprise or data center environments
• Experience supporting compliance frameworks such as SOC 2, ISO 27001, or CMMC
• Understanding of AI and automation technologies that improve network operations, monitoring, troubleshooting, and operational efficiency