120 Leidos Network Systems Engineer Jobs Hiring Near You

The Network / Systems Engineer is responsible for designing, implementing, maintaining, and supporting client and internal network and server infrastructures. This role provides advanced technical expertise across networking, virtualization, cloud platforms, cybersecurity, and Microsoft technologies. The Network / Systems Engineer serves as a Tier 3 escalation resource, leads infrastructure projects, and helps ensure reliable, secure, and scalable technology environments that enable business success.

The ideal candidate combines strong networking expertise with systems administration experience and is comfortable working directly with clients, vendors, and internal teams to deliver exceptional technical outcomes. This position is expected to perform both remote and onsite support as needed.

• Deploy, configure, maintain, and troubleshoot Windows Server environments.
• Manage Active Directory, Group Policy, DNS, DHCP, file services, and identity management.
• Administer virtualization environments including VMware and Hyper-V.
• Support Microsoft 365, Exchange Online, SharePoint, Teams, and Azure services.
• Perform systems monitoring, performance tuning, patch management, and health assessments.
• Develop disaster recovery and business continuity recommendations.
• Design, implement, and support LAN, WAN, wireless, SD-WAN, and VPN environments.
• Configure and maintain firewalls, switches, routers, and wireless infrastructure.
• Troubleshoot complex network performance, security, and connectivity issues.
• Implement and maintain network security best practices.
• Support VoIP and unified communications platforms.
• Develop network documentation, diagrams, and standards.

• Lead infrastructure deployment and migration projects.
• Conduct client discovery sessions and technical assessments.
• Provide project staging, testing, implementation, and post-deployment support.
• Participate in system upgrades, cloud migrations, and infrastructure modernization initiatives.
• Deliver project status updates and ensure projects meet established timelines.
• Serve as a senior escalation point for complex technical issues.
• Communicate effectively with clients, end users, vendors, and internal stakeholders.
• Provide technical recommendations and strategic guidance to clients.
• Develop and maintain technical documentation, procedures, and knowledge base articles.
• Mentor junior engineers and technical staff.

• Implement infrastructure security controls and best practices.
• Support vulnerability remediation efforts.
• Maintain compliance with security standards and client requirements.
• Assist with incident response, threat mitigation, and security audits.

• Bachelor's degree in Information Technology, Computer Science, or related field; equivalent experience may be substituted.
• 4+ years of experience supporting enterprise network and systems environments.
• Advanced knowledge of:
  • TCP/IP networking
  • Routing and switching
  • Firewalls and VPN technologies
  • DNS and DHCP
  • Active Directory and Group Policy
  • Windows Server administration
  • Microsoft 365 administration
  • Virtualization technologies (VMware and/or Hyper-V)
• Experience with Azure and cloud-based infrastructure solutions.
• Strong troubleshooting and analytical skills.
• Excellent verbal and written communication skills.
• Ability to manage multiple priorities in a fast-paced environment.

• Experience with Fortinet, Cisco, SonicWall, Meraki, Aruba, or Ubiquiti platforms.
• Experience with Azure Virtual Desktop and cloud networking.
• Experience with monitoring and management tools.
• Experience supporting managed services environments.
• Familiarity with SIEM, endpoint security, and cybersecurity frameworks.

• Microsoft Certified: Azure Solutions Architect Expert
• Cisco CCNA or CCNP
• CompTIA Network+
• CompTIA Security+
• VMware VCP
• Fortinet NSE/FCP
• Technical leadership and mentoring
• Problem-solving and critical thinking
• Organizational and time management skills
• Ability to work independently and collaboratively
• Adaptability and continuous learning mindset

• Ability to lift and move equipment up to 50 pounds.
• Ability to travel to client locations as required.
• Ability to work occasional evenings or weekends during maintenance windows or critical incidents.
• Hybrid, remote, or onsite depending on business needs.
• Participation in an on-call rotation may be required.

This job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. The employee may be required to perform other related duties as assigned.

Equal Employment Opportunity: Corsica Technologies is an Equal Opportunity Employer and values diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, disability, protected veteran status, or any other characteristic protected by applicable law.