SimSpace Corporation logo

Senior Network Security Engineer

Job Overview

Location

Remote - U.S.

Job Type

Full-time

Category

Engineering

Date Posted

June 13, 2026

Full Job Description

📋 Description

  • Senior Network Security Engineer responsible for the collaborative design, implementation, monitoring, maintenance, and security of enterprise network infrastructure and security platforms across SimSpace corporate offices and data centers in the U.S. and Europe.
  • Day-to-day responsibilities include acting as a subject matter expert for network and security infrastructure, designing and securing enterprise networks, managing VMware/NSX-T environments, administering firewalls and WAFs, troubleshooting network and security incidents, performing vulnerability assessments, monitoring infrastructure performance, maintaining documentation, and providing technical leadership and mentorship to junior engineers.
  • SimSpace is an AI Proving Ground founded in 2015 by experts from U.S. Cyber Command and MIT Lincoln Laboratory, serving allied governments, militaries, enterprises, and research institutions with realistic, live-fire cyber simulation platforms that enable adaptive, AI-ready defenses and compress cyber readiness cycles from months to days.
  • The role offers opportunities to lead security modernization initiatives, deepen expertise in zero-trust and cloud security platforms, mentor junior talent, and contribute to a mission-driven culture focused on building a safer digital world through continuous learning and innovation.

🎯 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
  • Experience managing next-generation firewalls, secure web gateways, WAFs, and zero-trust security platforms
  • Proficiency with packet captures, traffic analysis, and network troubleshooting methodologies
  • Ability to lead technical implementations, infrastructure upgrades, and operational initiatives

🏖️ Benefits

  • Base salary range: $135,000 - $205,000 with performance-based bonuses
  • Comprehensive medical, dental, and vision benefits starting day one
  • Unlimited vacation and dedicated health & wellness days
  • 401(k) retirement savings plan with company match
  • Equity stock options at hire with annual performance-based grants
  • Peloton Interactive Wellness Program with subsidized membership and equipment discounts

Skills & Technologies

Spring
SSL
Senior
Remote
$135k-205k

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About SimSpace Corporation

SimSpace Corporation provides cyber range software that lets enterprises model, test and train on replica networks. Its platform continuously mirrors production environments, offering on-demand labs for red/blue teams, compliance validation and workforce development. Fortune 500, defense and MSSP customers use the solution to reduce security risk, accelerate incident response and measure cyber readiness. Founded in 2015 and headquartered in Boston, the company is privately held and backed by venture investors focused on critical infrastructure protection.

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