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