Network Systems Engineer

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Date: Oct 15, 2026

Location: St. Louis, MO, Missouri, United States

Company: HII's Mission Technologies division

Requisition Number: 30712 

Required Travel: 0 - 10%

Employment Type: Full Time/Salaried/Exempt

Anticipated Salary Range: $104,231.00 - $145,000.00 

Security Clearance: TS/SCI  

Level of Experience: Mid 

 

This opportunity resides with Warfare Systems (WS), a business group within HII’s Mission Technologies division. Warfare Systems comprises cyber and mission IT; electronic warfare; and C5ISR systems.

HII works within our nation’s intelligence and cyber operations communities to defend our interests in cyberspace and anticipate emerging threats. Our capabilities in cybersecurity, network architecture, reverse engineering, software and hardware development uniquely enable us to support sensitive missions for the U.S. military and federal agency partners.

 

Leadership Mindset at HII – Mission Technologies

Leadership at HII is a mindset, not a title. Through our Leadership Capability Framework, we define how every employee grows, leads, and contributes—regardless of role. It sets the standard for how you can develop yourself and what you can expect from leaders across our organization. We look for candidates who want to grow in alignment with these capabilities:

  • Know & Grow Your People – Commit to learning and supporting team success.
  • Build Relationships – Communicate openly, collaborate well, and build trust.
  • Take Ownership – Deliver on commitments and take pride in your work.
  • Customer First – Focus on the mission and those we serve.
  • Shape the Future – Bring ideas, curiosity, and continuous improvement.
  • Act with Urgency – Take initiative and follow through with purpose.

These capabilities guide how all employees contribute to our shared success across Mission Technologies.

Job Description

Mission Technologies is searching for a Network Systems Engineer to join our team in St. Louis, MO. This role will help plan and develop telecommunications solutions involving computer and communications equipment. They analyze network alternatives and develop recommendations for improvements. 

Essential Job Responsibilities

  • Analyze, design, test, and evaluate network systems and services (e.g., LAN/WAN, internet/intranet, satellite, and other data communications environments).
  • Perform network modeling, analysis, and capacity/performance planning to support mission and operational requirements.
  • Provide technical leadership and assistance for senior-, mid-, and junior-level contractor Network Systems Engineers.
  • Support PEIN leadership in developing the enterprise network security roadmap, modernizing enterprise architecture, and integrating AI/automation to improve security and operations.
  • Capture stakeholder needs and translate them into clear, testable technical requirements with defined thresholds and objectives.
  • Communicate technical findings and risk posture to technical and non-technical audiences; develop actionable mitigation plans.
  • Coordinate across departments, vendors, and partner agencies to align priorities and integrate security and operational services.
  • Support execution management by defining milestones, tracking progress, resolving dependencies, and ensuring deliverables meet technical and security requirements.
  • Manage changes to scope, schedule, and security requirements to minimize operational disruption.
  • Produce weekly status reports, risk updates, and performance metrics for PEIN Division leadership and stakeholders.
  • Facilitate knowledge transfer and operational handoffs to ensure continuity of service delivery.
  • Drive process improvement by mapping workflows, developing/maintaining SOPs, and implementing enhancements to processes, tools, and security controls; provide project/program management training as needed.
  • Assess, prioritize, and integrate stakeholder demands across Core Service Areas (e.g., TCS, UDS, EMS, Cloud); manage end-to-end delivery and reporting for assigned requirements.
  • Participate in technical assessments of network/transport posture; identify vulnerabilities and gaps and recommend scalable, secure solutions aligned with performance, compliance, and cost objectives.
  • Support studies and modernization efforts, including applying AI/ML to automate workflows and accelerate vetting of IT and network requirements.
  • Forecast and manage network/transport resource demand; balance allocation across performance, cost, schedule, and scalability; identify risks to prevent capacity shortfalls or overruns.

 

Minimum Qualifications

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 the following:
    • Roles of devices in TCP/IP network
    • Details of IP, ARP, TCP, ICMP and UDP
    • Functions of FTP, HTTP, Telnet and other applications of TCP/IP
    • Use of Voice over IP or VoIP, email messaging and multicasting
    • Troubleshooting for TCP/IP issues at each network layer
  • ITIL Certification.
  • DAWIA Program Management Certification.
  • Experience managing enterprise network; cybersecurity tool and infrastructure deployments; cloud IAAS and PAAS implementations; and cross domain technology implementations.
  • Familiar with the acquisition lifecycle.
  • Familiar with the FAR and DFAR rules governing acquisition activities.
  • Active U.S. security clearance (Top Secret/SCI).

Preferred Requirements

  • Network technology course/certification in one or more areas:
    • Configuring TCP/IP on server computers
    • Managing and troubleshooting DNS and DHCP
    • Installing and configuring network and software infrastructure
    • Configuring and managing device routing and remote access
    • Monitoring and maintain network infrastructure
  • Completion of a specialized wireless network course and/or certification.

 

 


The listed salary range for this role is intended as a good faith estimate based on the role's location, expectations, and responsibilities. When extending an offer, HII's Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the role's function and a candidate's education or training, work experience, and key skills.

Meet HII’s Mission Technologies Division
Our team of more than 7,000 professionals worldwide delivers all-domain expertise and advanced technologies in service of mission partners across the globe. Mission Technologies is leading the next evolution of national defense – the data evolution - by accelerating a breadth of national security solutions for government and commercial customers. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class. Find the role that’s right for you. Apply today. We look forward to meeting you.

To learn more about Mission Technologies, click here for a short video: https://vimeo.com/732533072

HII is more than a job - it’s an opportunity to build a new future. We offer competitive benefits such as 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; as well as early childhood and post-secondary education scholarships. Bonus/other non-recurrent compensation is occasionally offered for qualified positions, and if applicable to this role will be addressed by the recruiter at the screening phase of application.

Why HII
We build the world’s most powerful, survivable naval ships and defense technology solutions that safeguard our seas, sky, land, space and cyber. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.

Recognized as one of America’s top large company employers, we are a values and ethics driven organization that puts people’s safety and well-being first. Regardless of your role or where you serve, at HII, you’ll find a supportive and welcoming environment, competitive benefits, and valuable educational and training programs for continual career growth at every stage of your career.

Together we are working to ensure a future where everyone can be free and thrive.
All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, physical or mental disability, age, or veteran status or any other basis protected by federal, state, or local law.

Do You Need Assistance? 
If you need a reasonable accommodation for any part of the employment process, please send an e-mail to buildyourcareer@hii-co.com and let us know the nature of your request and your contact information. Reasonable accommodations are considered on a case-by-case basis. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to from this email address. Additionally, you may also call 1-844-849-8463 for assistance. Press #3 for HII Mission Technologies.