Senior Network Security Engineer

SimSpace

Senior Network Security Engineer at SimSpace responsible for designing and maintaining network security infrastructure. Leading operational support and incident response efforts across corporate offices and data centers.

Posted 6/12/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $135,000 - $205,000 per yearWebsite

Tech Stack

Tools & technologies

CloudDNSFirewallsSwitchingTCP/IPVMware

About the role

Key responsibilities & impact

Act as the subject matter expert for SimSpace 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
Troubleshoot all levels of network connectivity issues including, but not limited to, network outages, switch failures, network performance, network interface card (NIC), cabling, TCP/IP configuration, etc.
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
Perform troubleshooting of complex network and security incidents, including outages, performance issues, routing failures, VPN issues, and security events
Assist in vulnerability management activities for network and security infrastructure, including performing web application vulnerability assessments using DAST tools, coordinating remediation efforts, and validating corrective actions
Monitor network and security infrastructure performance and execute corrective actions as needed
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

Requirements

What you’ll need

8+ years of network engineering experience
5+ years of hands-on network security or security infrastructure experience
Strong understanding of enterprise networking concepts, protocols, and infrastructure design
Strong knowledge of routing, switching, TCP/IP, DNS, VPNs, network segmentation, and secure remote access technologies
Experience managing next-generation firewalls, secure web gateways, WAFs, and zero-trust security platforms
Strong hands-on experience with firewall policy management, NAT, IPS/IDS, VPN technologies, and routing protocols including BGP
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
Experience with centralized logging, SIEM, security monitoring, alerting, and log analysis platforms to support threat detection and incident investigation
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.

Benefits

Comp & perks

Base salary range: $135,000 - $205,000 reflecting our confidence in your expertise and impact, with the opportunity for bonuses tied to company performance and individual contributions.
Comprehensive medical, dental, and vision benefits, plus savings plans—coverage starts on day one!
Access to company-paid counseling, coaching, and resources for you and your family through Spring Health.
Plan for your future with a 401(k)-retirement savings plan featuring a company match.
Take the time you need with unlimited vacation and dedicated health & wellness days. SimSpace provides flexible solutions to meet the diverse work-life needs of team members.
Paid leave plans to support you and your loved ones during life’s most important moments.
Equity stock options at hire, with annual performance-based grants—become an invested stakeholder in our shared success.
Earn $1,500–$3,500 for every qualified hire through our employee referral program.
Full- and partial- subsidized membership plans and equipment discounts to help you reach your personalized fitness goals.
Access a LinkedIn Learning membership to prioritize your personal and professional development.
Monthly reimbursements for meaningful connections with teammates through our SocialSpace Community.
Legal plan coverage, pet insurance, wellness reimbursements, and more to simplify life’s details.

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

network engineeringnetwork securityVMwareNSX-Tfirewall managementTCP/IPVPNrouting protocolsvulnerability managementtraffic analysis

Soft Skills

technical leadershipmentorshipcommunicationproblem-solvingadaptability