Network Security and Firewall Engineer - City

City of Oklahoma City • Oklahoma City, OK

19h • $92,749 - $141,817

About The Position

This position is located in the Technology Infrastructure Division of the Information Technology Department at the City of Oklahoma City and is under the direction of an immediate supervisor. The Network Security and Firewall Engineer designs, implements, configures, manages, and maintains firewall infrastructure to protect the organization’s network from security threats, prevent unauthorized access, and safeguard sensitive data. The role supports network security operations by implementing security policies, monitoring network activity, analyzing security risks, and applying industry best practices to maintain the integrity, availability, and reliability of network systems.

The position is designated as safety sensitive and cyber security sensitive. Employees are subject to a CJIS fingerprint background check and must complete the required CJIS Security and Privacy Training and pass the online certification test. The position works primarily indoors in a climate-controlled environment and may involve occasional local or out-of-town travel. Employees may occasionally work beyond their normal scheduled hours to respond to unplanned outages, perform scheduled maintenance, or meet project deadlines. Typical City working hours are Monday through Friday, 8:00 a.m. to 5:00 p.m., though schedules may vary and may include weekends or holidays based on business needs.

Requirements

• Bachelor’s degree in computer science, information technology, cybersecurity, or a related field; or an equivalent combination of education, training, relevant work experience, and industry certifications.
• At least five years of professional experience in information technology, cybersecurity, network administration, or a related field.
• At least three years of experience administering, configuring, and maintaining firewall systems.
• Knowledge of firewall administration, network security, IDPS, vulnerability management, and security incident response practices.
• Knowledge of firewall technologies such as Cisco ASA, Palo Alto, Juniper, and Fortinet; VPN technologies; SIEM systems; ACLs; network monitoring tools; and network segmentation techniques.
• Knowledge of network protocols, routing, and switching.
• Skill in analyzing security events, logs, and network data to identify vulnerabilities, threats, and potential risks.
• Verbal and written communication skills.
• Ability to prepare and maintain technical documentation, including firewall configurations, procedures, and network diagrams.
• Ability to work in a fast-paced, evolving environment and adapt to changing cybersecurity threats, technologies, and industry best practices.

Nice To Haves

• Experience with Palo Alto and Fortinet.

Responsibilities

• Configure, install, and maintain firewall hardware and software solutions, including next-generation firewalls, to protect the organization’s network.
• Develop, implement, and enforce firewall security policies, rules, and access controls to safeguard sensitive data and support regulatory compliance.
• Monitor network traffic for suspicious activity, security breaches, and vulnerabilities using intrusion detection and prevention systems.
• Respond to security incidents and breaches, investigate root causes, and implement corrective actions to prevent recurrence.
• Analyze firewall logs and generate reports to identify security threats, trends, and potential vulnerabilities.
• Manage user access and permissions by configuring VPNs, ACLs, and other access control mechanisms.
• Keep firewall hardware and software current by applying patches, firmware updates, and security patches.
• Implement network segmentation to isolate critical assets and limit lateral movement in the event of a breach.
• Monitor and optimize firewall performance to avoid adversely affecting network speed or latency.
• Maintain accurate documentation of firewall configurations, policies, procedures, and network diagrams or topologies.
• Collaborate with network engineers, system administrators, security analysts, and other IT teams to support a cohesive and secure network environment.
• Provide training and guidance to employees and IT staff on firewall security best practices and security awareness.
• Monitor daily usage, perform regular maintenance, and patch firewalls as needed.
• Troubleshoot complex errors and configurations, determine root causes, and implement solutions.
• Stay current with changes, processes, and compliance requirements to ensure organizational and regulatory standards are met.
• Perform other duties as assigned.

Benefits

• Competitive pay.
• An average of $22,000 annually contributed toward benefits and retirement.
• A comprehensive package supporting health and wellness, financial security, work-life balance, and personal and professional growth and development.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level