Senior Network Security Engineer

Job Summary

We are seeking a highly skilled Senior Network Security Engineer to secure, optimize, and modernize enterprise network infrastructure. This role focuses on advanced firewall security, SD-WAN optimization, routing protocols, cloud security, and zero-trust architectures. The ideal candidate brings deep hands-on expertise across multi-vendor security platforms and leads major network security initiatives, including firewall migrations and cloud security enhancements.

Key Responsibilities

Firewall & Network Security Engineering

• Lead firewall migration initiatives, including policy conversion, optimization, and traffic validation.

• Manage and maintain enterprise firewall environments across on-premises, cloud, and remote sites.

• Design, optimize, and audit firewall rule sets to improve security posture, performance, and compliance.

• Conduct regular risk assessments and security audits aligned with industry best practices.

SD-WAN & Routing Optimization

• Design, manage, and optimize SD-WAN architectures for performance, resiliency, and global connectivity.

• Implement traffic steering, failover, and WAN optimization strategies.

• Configure and troubleshoot enterprise routing protocols including EIGRP, BGP, and OSPF.

• Optimize routing policies for high availability and performance across hybrid networks.

Cloud & Zero-Trust Security

• Administer cloud security access solutions for secure application access and web protection.

• Implement zero-trust access policies for users and cloud workloads.

• Troubleshoot cloud security tunnels, proxy configurations, and access workflows.

Threat Protection & Incident Response

• Implement and maintain DDoS protection, IPS/IDS, and threat detection solutions.

• Analyze security events, logs, and packet captures to diagnose and mitigate threats.

• Collaborate with security operations teams and vendors on complex incident resolution.

Automation & Optimization

• Develop scripts and automation frameworks to streamline firewall audits, policy updates, and network security operations.

• Maintain accurate documentation of network security configurations, policies, and standards.

• Continuously optimize security infrastructure to improve efficiency and performance.

Required Skills & Experience

• 5–8 years of experience in network security engineering

• Expertise with enterprise firewalls across multiple vendors

• Strong knowledge of SD-WAN technologies and architectures

• Hands-on experience with EIGRP, BGP, and OSPF routing protocols

• Experience with cloud security access platforms and zero-trust solutions

• Advanced knowledge of VPN technologies and NAT design

• Experience with DDoS mitigation and intrusion detection/prevention systems

• Strong troubleshooting skills using logs, packet analysis, and security monitoring tools

Preferred Qualifications

• Industry security and networking certifications

• Experience securing cloud environments across major platforms

• Familiarity with SIEM and security monitoring tools

• Experience with infrastructure automation and scripting tools

Orange, Connecticut, United States

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