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# Network & Security Infrastructure Engineer

- **Company:** IS3 Solutions
- **Location:** Hanover, NJ, United States
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, Cisco PIX, Domain Name System (DNS), Network Security, Routing, Open Shortest Path First (OSPF), BIG-IP Global Traffic Manager (GTM), SSL Certificate Management, Load Balancing, Firewalls (Computer Science), Fortinet
- **Published:** November 7, 2026
- **Apply:** https://www.thejobnetwork.com/job/34a49fd6-550b-4e50-a75f-19c0d8d05ca4/network-security-infrastructure-engineer

## About the Role

* Deep, hands-on expertise in BGP and OSPF (used together in this environment)

 * Strong understanding of enterprise routing design and troubleshooting

 2. Load Balancing & Certificate Management
 * F5 load balancers configuration and troubleshooting

 * VIP setup and SSL/TLS certificate handling

 * GTM (Global Traffic Manager) experience

 3. Firewalls
 * Cisco ASA configuration and support

 * Fortigate configuration and support

 * (Note: Checkpoint firewalls are no longer in the environment; not required), * Prior experience supporting a customer-facing, production banking or financial services environment

 * Comfortable working within an incident-response/on-call-adjacent model with late-evening change windows

 * Able to work independently and communicate effectively with global (US/India/UK) team members

 * Strong troubleshooting instincts able to "figure things out on the spot " under production pressure

## Description

This role supports a high volume of customer-facing applications (balance inquiries, account activity, and related services) through a dedicated service chain. The engineer will build, maintain, and secure the network and infrastructure layer underpinning these services, ensuring reliability, availability, and security, and will work in close coordination with a global support team spanning the US, India, and UK., * Build, deploy, and maintain load balancer, DNS, firewall, and routing infrastructure supporting customer-facing applications

 * Monitor infrastructure and system performance; identify, troubleshoot, and resolve issues to reduce mean time to resolution

 * Manage SSL/TLS certificate lifecycle across load balancing platforms

 * Support change implementation during defined change windows (typically starting at 10 PM)

 * Collaborate with a global support model, coordinating handoffs with the India-based team for changes falling outside US working hours (generally after midnight)

 * Partner with cross-functional teams, architects, and business stakeholders to align infrastructure work with business needs

 * Apply automation and scripting where possible to reduce manual intervention

 * Maintain security best practices across firewall and network configurations