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Senior Network Firewall Engineer Jobs in Missouri

IC-CAP LLC

Sr. Network Systems Engineer 112-190

Saint Louis, MO · On-site

$101K - $138K/yr

We are seeking a Sr. Network Systems Engineer to join the N2W Active IT and project team, providing critical expertise in systems engineering, network architecture, and project management. This role ...

Walmart

(USA) Senior Network Engineer

Noel, MO · On-site

$80K - $155K/yr

Option 1: Bachelor's degree in computer science, information technology, information systems, electrical engineering, or related area and 3 years' experience in large-scale networking environments or ...

Walmart

(USA) Senior Network Engineer

Cassville, MO · On-site

$80K - $155K/yr

Option 1: Bachelor's degree in computer science, information technology, information systems, electrical engineering, or related area and 3 years' experience in large-scale networking environments or ...

Walmart

(USA) Senior Network Engineer

Anderson, MO · On-site

$80K - $155K/yr

Option 1: Bachelor's degree in computer science, information technology, information systems, electrical engineering, or related area and 3 years' experience in large-scale networking environments or ...

CarShield

Network Engineer

Saint Peters, MO · On-site

Configuring firewalls, routing and switching to maximize network efficiency and security. * SSL/TLS ... Current knowledge of DevOps, containerization, security, and observability. * Scripting ability to ...

CarShield

Network Engineer

Saint Peters, MO · On-site

Description: CarShield is seeking an experienced Network Engineer to join its growing ... Configure firewalls, routing, and switching to maximize network performance and security.

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Senior Network Firewall Engineer information

What does a senior network firewall engineer do?

A Senior Network Firewall Engineer is responsible for designing, implementing, managing, and maintaining network firewall systems to protect an organization’s data and IT infrastructure from unauthorized access and cyber threats. They analyze security risks, configure firewall rules, monitor network traffic, and ensure compliance with security policies. Additionally, they troubleshoot firewall issues, provide technical guidance to junior staff, and stay updated on the latest security technologies and threats.

What are the key skills and qualifications needed to thrive as a senior network firewall engineer, and why are they important?

To thrive as a Senior Network Firewall Engineer, you need deep expertise in network security, firewall configuration, and troubleshooting, usually supported by a degree in computer science or a related field and several years of experience. Proficiency with firewall platforms (such as Palo Alto, Cisco ASA, or Fortinet), network monitoring tools, and certifications like CISSP or CCNP Security are typically required. Strong analytical thinking, attention to detail, and effective communication help you excel in diagnosing issues and collaborating with cross-functional teams. These skills ensure the secure and reliable operation of enterprise networks, protecting critical data and minimizing security risks.

What are some common challenges faced by senior network firewall engineers when managing large-scale enterprise environments?

Senior Network Firewall Engineers often encounter challenges such as balancing robust security with network performance, managing complex rule sets across multiple devices, and ensuring seamless policy updates without disrupting business operations. They must also stay current with evolving cyber threats and compliance requirements, which can require frequent adjustments to firewall configurations. Effective collaboration with security operations, IT infrastructure, and compliance teams is essential to address these challenges and maintain a secure, high-performing network.

What is the difference between Senior Network Firewall Engineer vs Network Security Analyst?

AspectSenior Network Firewall EngineerNetwork Security Analyst
CertificationsCCNP, CISSP, Cisco ASA certificationsCISSP, CompTIA Security+, GIAC certifications
Work EnvironmentDesigning, implementing, managing firewalls and security infrastructureMonitoring, analyzing security threats, incident response
Employer & Industry UsageIT departments, cybersecurity firms, large enterprisesSecurity teams, government agencies, financial institutions

The Senior Network Firewall Engineer primarily focuses on configuring and maintaining firewall systems to protect network perimeters, while the Network Security Analyst monitors security events and responds to threats. Both roles require similar certifications and often work within the same industry environments, but their core responsibilities differ in scope and daily tasks.

What are the most commonly searched types of Network Firewall Engineer jobs in Missouri?

The most popular types of Network Firewall Engineer jobs in Missouri are:

What are popular job titles related to Senior Network Firewall Engineer jobs in Missouri?

For Senior Network Firewall Engineer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Senior Network Firewall Engineer jobs in Missouri look for?

The top searched job categories for Senior Network Firewall Engineer jobs in Missouri are:

What cities in Missouri are hiring for Senior Network Firewall Engineer jobs?

Cities in Missouri with the most Senior Network Firewall Engineer job openings:

Senior Network Firewall Engineer jobs near you
Infographic showing various Senior Network Firewall Engineer job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 15% Part Time, and 5% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution.

Sr. Network Systems Engineer 112-190

IC-CAP LLC

Saint Louis, MO • On-site

$101K - $138K/yr

Full-time

Re-posted 28 days ago

Job description

We are seeking a Sr. Network Systems Engineer to join the N2W Active IT and project team, providing critical expertise in systems engineering, network architecture, and project management. This role supports the strategic goals of the N2W IT Program by analyzing, designing, testing, and evaluating LAN/WAN technologies that underpin the delivery of N2W Active IT architecture components.
The Network Systems Engineer will assist the Government in defining and refining the overall LAN/WAN design and requirements for N2W, conducting technical assessments, and supporting network operations across N2W facilities. The engineer will lead and contribute to technical studies for the N2W Program Office, serving as a key point of contact for related efforts and collaborating with other teams to perform research and develop requirements for emerging capabilities.
As part of the N2W team, the engineer will assess future IT technologiesincluding secure wireless, zero-client environments, multi-level security, IoT, and cloud solutionswhile evaluating their impact on business processes and building business cases for their implementation within NGA.
This position requires close collaboration with both contractor and government personnel to resolve technical challenges in a highly integrated, multi-contractor environment. Candidates must be comfortable working with diverse teams and interacting with stakeholders at all levels.
Duties may include:
  • Provide comprehensive engineering support for the N2W Project, including the identification, management, and resolution of technical requirements. Conduct analyses of alternatives (AoAs), and develop engineering assessments and strategic roadmaps. Support the development and coordination of LAN/WAN network design plans and requirements in collaboration with NGA transport leads and key IC/DoD stakeholders such as DISA and DTRA.
  • Plan and execute LAN/WAN operations, technical assessments, and field surveys using COTS, GOTS, and custom-developed tools. Document network tool designs and integration strategies. Evaluate LAN/WAN technologies and related network engineering efforts, developing mitigation strategies and exception packages as needed.
  • Engage with NGA subject matter experts and industry partners to ensure alignment with best practices. Deliver full lifecycle project management support, including the execution of technical studies, participation in major reviews, evaluation of hardware/software solutions, and development of actionable recommendations. Regularly brief stakeholders on project status, findings, and analysis results.

Skills and Experience:
Required:
  • Bachelors degree in Computer Science / Math / Science / Engineering or IT related degree.
  • 12 years of technical experience is required, to include:
  • 10 years of demonstrated experience developing networking technologies such as routing, circuit switching, packet switching, multiprotocol label switching (MPLS), and encapsulation protocols, as well as their accompanying international, government, or industry standards.
  • 4 years of IT planning/scheduling/requirements development experience supporting a large and complex IT program similar to the N2W effort.
  • Demonstrated experience implementing DoD/IC secure wireless strategies and policies, such as Commercial Solutions for Classified (CSfC).

Desired:
  • M.S. Degree in Engineering, Computer Science, Information Systems, or IT related degree.
  • 2 years of technical experience providing transport support for IC/National System for Geospatial Intelligence (NSG) systems network infrastructure. LAN/WAN certifications (e.g., CCIE, CWEE, CCDA, JNCP, JNCIS, JNCIP)

Security Clearance:
  • Active TS/SCI and the willingness to sit for a polygraph, if needed

IC-CAP provides equal employment opportunities (EEO) to all applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status.

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