Senior Network Security Engineer

Job Description: 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 Working Place: Orange, Connecticut, United States Company : 2026 Feb 26th Cyber - Avangrid Vets Hired