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Senior Network Firewall Engineer Jobs in Missouri

teKnoluxion

Senior Network Engineer

Saint Louis, MO · On-site

$101K - $138K/yr

Overview Senior Network Engineer Springfield, VA or St. Louis, MO Active TS (SCI eligibility) clearance and eligibility to obtain a CI poly At Bcore, our strength comes from how we deliver impact to ...

Abile Group, Inc.

Sr Network Engineer

Saint Louis, MO · On-site

$101K - $138K/yr

Overview Abile Group has an exciting and challenging opportunity for a Sr Network Engineer on a 10 year contract providing User Facing and Data Center Services supporting an Intelligence Community ...

LRS

Senior Network Engineer

Saint Louis, MO · On-site

$65 - $75/hr

LRS Consulting Services is seeking a Senior Network Engineer who enjoys solving complex infrastructure challenges, partnering with business leaders, and building reliable network solutions that ...

GDIT

Sr Network Engineer

Saint Louis, MO

$101K - $138K/yr

Our work depends on a Sr. Network Engineer with TS/SCI security clearance and willing to take CI Polygraph in joining our team to support our intelligence customer activities in Springfield, VA or St.

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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 Engineer (Onsite Role)

O'Reilly Auto Parts

Springfield, MO • On-site

$97K - $134K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 10 days ago

O'Reilly Auto Parts rating

5.3

Company rating: 5.3 out of 10

Based on 1,905 frontline employees who took The Breakroom Quiz

557th of 739 rated retailers

Job description

Job Summary:
The Senior Network Engineer will lead the evaluation of intermediate network systems, recommend resources for scalability, and identify products for enhanced service levels in multisite connectivity environments. Supports standards for low-latency networks in high-traffic retail and omnichannel environments. Recommends enhancements for security, mobility, and access. Provide resolution of complex network problems. Identify and evaluate new products. May provide work leadership and direction to other team members.
This position will be located in Springfield MO and is not open to remote work
Responsibilities and Duties:
  • Drive advances in technologies and architectures to increase the value delivered by technology and digital capabilities, either through improvements to the efficiency of the technology environment or through those that reduce the total cost of technology operations. Recommend and participate in activities related to the design, development, and maintenance of the digital capabilities within the enterprise architecture.
  • Design and select business-critical storage, data center, and client/server environments to design solutions in line with industry best practice and provide a third-line point of escalation for appropriate global infrastructure solutions.
  • Produce multiple concepts and prototypes to design digital products/services.
  • Discuss and recommend technical developments to improve the quality of the website/portal/applications software and supporting infrastructure to better meet users' needs.
  • Design and perform website/applications software tests and respond to user emails to monitor, diagnose, and correct performance issues.
  • Collect business requirements using a variety of methods, such as interviews, document analysis, workshops, and workflow analysis, to express the requirements in terms of target user roles and goals.
  • Explore and develop a detailed understanding of external developments or emerging issues and contribute to the evaluation of their potential impact on, or usefulness to, the organization.
  • Implement required security measures, such as firewalls or message encryption, and provide input on their design, monitoring performance to notify security experts of any problems.
  • Develop own capabilities by participating in assessment and development planning activities as well as formal and informal training and coaching; gain or maintain external professional accreditation, where relevant, to improve performance and fulfill personal potential. Maintain an in-depth understanding of technology, external regulation, and industry best practices through ongoing education, attending conferences, and reading specialist media.
  • Contribute to the analysis of information, the drafting of engineering standards and specifications, and the evaluation of the effectiveness of those standards within own engineering discipline to inform engineering work in the organization and/or of its suppliers, contractors, and consultants.
  • Provide fault isolation and resolution for complex challenges to limit and address issues promptly.
  • Document "as is" and "to be" processes and describe the changes required to migrate to the "to be" capability to record accurately the change required.
  • Conduct research using primary data sources, and select information needed for the analysis of key themes and trends.
  • Mentor associate and network engineers on complex troubleshooting, such as resolving wide area network bottlenecks in revenue generating systems.
  • Participate in an on-call rotation and provide flexible response to network outages or urgent incidents to maintain operational continuity.

Skills:
Required:
  • Determine and analyze trends from data that is collected to assist in compiling reports that will help in decision-making.
  • Design, execute and report on systems/service tests to ensure that an application functions as specified in the requirements.
  • Conduct gap analysis between current and future states to identify components of the overall change strategy.
  • Adopt solutions to automate and manage multiple applications and functions within an organization.
  • Manage and administer wide area networks (WANs).
  • Proficiently navigate and manage cloud-based infrastructure, including virtual machines, networks, storage, and services.
  • Understand, deploy, and manage cloud-based infrastructure and services.
  • Understand business context, needs, rules, and architecture, as well as organizational structure, cultures, capabilities, and processes to document the current state of processes and the business.
  • Develop an effective change strategy based on gap analyses and enterprise readiness assessment results, including transitions states and release plans.
  • Applies comprehensive knowledge / skill, acts with independence and provides guidance and training to others.
  • Maintain system/service and information security, integrity, compliance and continuity.
  • Utilize the appropriate modeling tool(s) to diagram the requirements from data and state changes, process and process improvements, as well as use cases and user stories.
  • Proficiently use and troubleshoot a wide range of IT hardware, software, and network systems to ensure optimal performance and user experience.
  • Review and evaluate recommendations and requirements and to develop appropriate plans or deliver actions required.
  • Develop and execute architectures, policies and practices in order to manage the information lifecycle needs of an organization.

Preferred:
  • Expertise in automation scripting (e.g., Python/Ansible/Terraform) for multisite network provisioning.
  • Cisco Certified Network Professional or equivalent certification.

Education: Bachelor's Degree or Equivalent Level
Experience: Experience enables job holder to deal with the majority of situations and to advise others (5 years to 8 years)
Managerial Experience: Experience of supervising and directing people and other resources to achieve specific end results within limited timeframes including team guidance (1 to 3 years)
O'Reilly Auto Parts has a proven track record of growth and stability. O'Reilly is full of successful career stories and believes in a strong promote-from-within philosophy, encouraging you to grow your career along with the organization.
Total Compensation Package:
  • Competitive Wages & Paid Time Off
  • Stock Purchase Plan & 401k with Employer Contributions Starting Day One
  • Medical, Dental, & Vision Insurance with Optional Flexible Spending Account (FSA)
  • Team Member Health/Wellbeing Programs
  • Tuition Educational Assistance Programs
  • Opportunities for Career Growth

O'Reilly Auto Parts is an equal opportunity employer. The Company does not discriminate on the basis of race, religion, color, national origin or ancestry (including immigration status or citizenship), sex, sexual orientation, gender identity, pregnancy (including childbirth, lactation, and related medical conditions,) age (40 and over), veteran status, uniformed service member status, physical or mental disability, genetic information (including testing or characteristics) or another protected status as defined by local, state, or federal law, as applicable.
Qualified individuals with a disability may be entitled to reasonable accommodation under the Americans with Disabilities Act. If you require a reasonable accommodation during the application or employment process, please send an email to: rar@oreillyauto.com or call (800) 471-7431 option , and provide your requested accommodation, and position details.

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