Cisco Firewall Engineer L3

This position is listed on behalf of a partner company who manages all applications and next steps. Our partner is looking for a senior technical expert supporting enterprise network security infrastructure in the United States.

About the role

You will act as a senior technical expert responsible for advanced firewall troubleshooting, security architecture improvements, and complex infrastructure initiatives. The position combines hands-on engineering, strategic problem-solving, and collaboration with security and networking teams. You will help strengthen security posture through firewall optimization, segmentation strategies, automation, and continuous improvements. Working in a remote environment, you will support critical enterprise systems while contributing technical expertise and mentorship. This is an ideal opportunity for an experienced network security professional who enjoys solving complex challenges and improving reliability, performance, and security across large-scale environments.

Responsibilities

• Lead root cause analysis for complex firewall and network security incidents.
• Design and improve segmentation strategies, security policies, and firewall architectures.
• Implement advanced security services and enhance enterprise protection capabilities.
• Perform firewall migrations, upgrades, and technology improvements.
• Optimize firewall performance, configurations, and rule base efficiency.
• Integrate security solutions with SIEM platforms and automation workflows.
• Support advanced troubleshooting activities across enterprise networking environments.
• Collaborate with vendors and internal teams to resolve technical challenges.
• Mentor junior engineers and share best practices across the team.
• Contribute to continuous improvement initiatives focused on security, reliability, and operational efficiency.

Requirements

• 6-10+ years of experience in network security engineering or related infrastructure roles.
• Expert knowledge of Cisco firewall architecture and enterprise networking concepts.
• Strong understanding of routing, high availability (HA), and network security design principles.
• Proven experience troubleshooting complex firewall and connectivity issues.
• Experience designing and implementing security policies and segmentation approaches.
• Familiarity with automation tools and security workflow integrations.
• Ability to work independently and manage advanced technical challenges.
• Strong communication and collaboration skills.
• CCNP Enterprise or CCNP Security certification is preferred.
• Experience supporting large-scale enterprise environments is highly desirable.
• Exposure to Zero Trust security principles is a plus.

Benefits

• Fully remote contract opportunity.
• Competitive compensation based on experience and technical expertise.
• Opportunity to work on large-scale enterprise security environments.
• Exposure to advanced firewall technologies, automation, and security architecture.
• Opportunity to contribute as a subject matter expert and mentor technical teams.
• Flexible remote working arrangement.