Network Systems Engineer

FusionICS, LLC; Washington (District of Columbia); On-site; USD 110,000 - 160,000; Full time

Job summary

FusionICS, LLC in Washington, DC, seeks a Network Systems Engineer to design, configure, and maintain secure enterprise and ICS networking across campus environments. You will implement VPNs, encryption, and robust routing and switching, ensuring high availability and compliance with RMF and NIST standards.

The role requires hands-on Cisco/Fortinet/Juniper experience, TS clearance eligibility, and the ability to work in secure, high-security facilities.

Qualifications

• U.S. citizenship required due to contract
• Active TS clearance with SCI eligibility required
• Ability to obtain and maintain site access

Responsibilities

• Architect, configure, and manage routing, switching, and firewall hardware across mixed Cisco, Fortinet, and Juniper environments
• Design, implement, and maintain Enterprise VPN architectures (IPsec) and secure network enclaves
• Configure, deploy, and manage digital encryptors
• Analyze network appliances, software applications, and encryption technology products to specify and develop RMF documentation (NIST SP 800-37)
• Prepare, implement, and monitor network disaster procedures and infrastructure recovery solutions
• Review design and engineering blueprints, and oversee the deployment of fiber optic and structured cabling systems across new construction and existing facilities
• Enforce construction drawings, conduct site inspections to evaluate physical conditions, and oversee contractor execution for networking installations

Skills

Routing & switching

Firewall hardware

VPN architectures

Encryption technologies

RMF/NIST SP 800-37

Network security

Disaster recovery planning

Site inspections

Education

BS in Engineering or related field

Tools

Cisco IOS

Fortinet FortiOS

Juniper Junos

Job description

Network Systems Engineer

FusionICS, LLC Washington, District of Columbia, United States

About this position

About Fusion

Fusion is a Service-Disabled Veteran-Owned Small Business specializing in mission-critical engineering, secure infrastructure, and advanced technical solutions for federal and defense customers. We bring precision, integrity, and deep expertise to some of the nation’s most complex and sensitive programs.

When you join Fusion, you become part of a collaborative, mission-focused organization that values technical excellence, accountability, and a steadfast commitment to national security.

Position Summary

Fusion is seeking a Network Systems Engineer to provide technical oversight, quality control, advanced network configuration, and infrastructure compliance. The Network Systems Engineer will support infrastructure assessments and drive the IC program forward through continuous improvements

The Network Systems Engineer is responsible for designing, configuring, and maintaining stable, and consistent connectivity across all campus communications and Industrial Control Systems (ICS) networks. From implementing ironclad network security, Virtual Private Networks (VPNs), and digital encryptors, to executing critical infrastructure updates and overseeing the physical installation of fiber optic and structured cabling systems, the Network Systems Engineer serves as the technical backbone that connects all enterprise and IC operations

Deep technological expertise with a wide range of routing, switching, and firewall hardware, specifically within mixed Cisco and Fortinet environments, is essential. This role ensures the efficient, secure, and compliant deployment of communication infrastructure to support networking and data transmission needs through daily field inspections, technical architecture design, and collaboration with government personnel.

Security Clearance Requirement

• U.S. citizenship is required due to customer and contract requirements
• Active Top Secret (TS) clearance with SCI eligibility required
• Must be able to obtain and maintain the customer specific clearance and site access required for assigned duties

Key Responsibilities

• Architect, configure, and manage routing, switching, and firewall hardware across mixed Cisco, Fortinet, and Juniper environments
• Design, implement, and maintain Enterprise VPN architectures (IPsec) and secure network enclaves
• Configure, deploy, and manage digital encryptors
• Analyze network appliances, software applications, and encryption technology products to specify and develop Risk Management Framework (RMF) documentation (NIST SP 800-37)
• Prepare, implement, and monitor network disaster procedures and infrastructure recovery solutions

Infrastructure Oversight & Quality Assurance

• Review design and engineering blueprints, and oversee the deployment of fiber optic and structured cabling systems across new construction and existing facilities
• Enforce construction drawings, conduct site inspections to evaluate physical conditions, and oversee contractor execution for networking installations (ICS, Security ACS, IDS, and Cameras)
• Manage the three-phase control quality management process to verify physical and logical network compliance at all project stages
• Ensure all standards for pathways, cable management, racks, and distribution points have been installed for optimized performance
• Assess campus-wide needs for network bandwidth, stability, and security, ensuring scalability for future IC and enterprise growth
• Participate in meetings, site briefings, and provide technical insight and troubleshoot complex network stability issues

Physical Requirements & Work Environment

• Ability to work in indoor and outdoor environments, including construction zones, and near high-voltage switchgear and substations
• Ability to work in high-security environments requiring strict access controls and security protocols
• Requires lifting/carrying up to 50 lbs, climbing ladders, and working in confined spaces

Qualifications

Education & Experience

• BS. in Engineering, Computer