An early-stage cybersecurity software company, SimSpace was founded in 2015 to provide state-of-the-art network emulation and modeling tools that deliver realis
Senior Network Security Engineer
Location
United States
Posted
7 days ago
Salary
$135K - $205K / year
Seniority
Senior
Job Description
Senior Network Security Engineer
SimSpace
• 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
Job Requirements
- 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
- 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.
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