Network Systems Engineer

Mission Technologies, a division of HII

. Plan and develop telecommunications solutions involving computer and communications equipment .

Posted 10/15/2026full-timeSt. Louis • Missouri • United StatesSeniorLead💰 $104,231 - $145,000 per yearWebsite

Tech Stack

Tools & technologies

CloudCyber SecurityDNSTCP/IPVoIP

About the role

Key responsibilities & impact

Plan and develop telecommunications solutions involving computer and communications equipment
Analyze network alternatives and develop recommendations for improvements
Analyze, design, test, and evaluate LAN/WAN, internet/intranet, satellite, and other data communications systems and services
Perform network modeling, analysis, and capacity/performance planning
Provide technical leadership and assistance to senior-, mid-, and junior-level contractor Network Systems Engineers
Support enterprise network security roadmap development, enterprise architecture modernization, and AI/automation integration
Capture stakeholder needs and translate them into testable technical requirements
Communicate technical findings and risk posture and develop mitigation plans
Coordinate across departments, vendors, and partner agencies
Define milestones, track progress, resolve dependencies, and ensure deliverables meet technical and security requirements
Manage scope, schedule, and security requirement changes
Produce weekly status reports, risk updates, and performance metrics
Facilitate knowledge transfer and operational handoffs
Map workflows, develop and maintain SOPs, and implement process, tool, and security control enhancements
Assess, prioritize, and integrate stakeholder demands across Core Service Areas including TCS, UDS, EMS, and Cloud
Participate in network/transport posture assessments and recommend scalable, secure solutions
Support modernization studies, including AI/ML workflow automation
Forecast and manage network/transport resource demand and identify capacity risks

Requirements

What you’ll need

9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 13 years relevant experience
Network technology course/certification in TCP/IP with applied understanding of TCP/IP devices, IP, ARP, TCP, ICMP, UDP, FTP, HTTP, Telnet, VoIP, email messaging, multicasting, and troubleshooting at each network layer
ITIL Certification
DAWIA Program Management Certification
Experience managing enterprise networks
Experience with cybersecurity tool and infrastructure deployments
Experience with cloud IAAS and PAAS implementations
Experience with cross domain technology implementations
Familiarity with the acquisition lifecycle
Familiarity with FAR and DFAR rules governing acquisition activities
Active U.S. security clearance (Top Secret/SCI)
Preferred: network technology course/certification in server TCP/IP configuration, DNS/DHCP, network and software infrastructure, routing and remote access, and network infrastructure monitoring and maintenance
Preferred: specialized wireless network course and/or certification

Benefits

Comp & perks

Best-in-class medical, dental and vision plan choices
Wellness resources
Employee assistance programs
Savings Plan Options (401(k))
Financial planning tools
Life insurance
Employee discounts
Paid holidays and paid time off
Tuition reimbursement
Early childhood and post-secondary education scholarships
Bonus/other non-recurrent compensation may occasionally be offered for qualified positions
Supportive and welcoming environment
Valuable educational and training programs for continual career growth