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# Network Security Engineer

- **Company:** Wintrust Financial
- **Location:** Chicago, IL, United States
- **Experience:** Expert
- **Salary:** $117,000.0 - $158,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Amazon Web Services, Application Firewall, Microsoft Azure, Border Gateway Protocol, Cloud Computing, System Configuration, Dynamic Host Configuration Protocol, Domain Name System Security Extensions, Domain Name System (DNS), Enhanced Interior Gateway Routing Protocol, Intrusion Detection Systems, IP Address Management, Virtual Private Networks (VPN), Multi-protocol Systems, Information Systems Security Architecture Professional, Network Security, Automation of Marketing, Routing, Network Protocols, Open Shortest Path First (OSPF), Peering, Zero Trust Network Access, Web Application Security, Data Streaming, TCP/IP, Toolchain, Wide Area Networks, Google Cloud, Network Access Control, Computer Network Technologies, HybridCloud, Firewalls (Computer Science), Information Technology, Low Latency, Cloudflare, Firepower, Firewall Services Module, Cisco
- **Published:** June 24, 2026
- **Apply:** https://www.dice.com/job-detail/025bd5b6-f091-4d04-932a-e5b6dd619bd5

## About the Role

* Firewall Rule & Policy Optimization: Lead the continuous cleanup and optimization of firewall rules and NGFW policies to eliminate redundancy, reduce latency, and enforce necessary access control. Preferred experience navigating and using Algosec as the tool conducting the analysis.
 * Proxy and DNS Security - Provide expertise in managing enterprise DNS infrastructures (e.g., Infoblox, BlueCat, or Windows DNS) and managing enterprise proxy solution (BlueCoat, Zscaler etc.). Experience must include implementing DNSSEC, configuring redundant DNS architectures, and utilizing DNS Filtering (Cisco Umbrella) and ability to evaluate proxy architecture and categorical blocking.
 * DDI & IP Address Management (IPAM): Strong command of DDI (DNS, DHCP, and IPAM) to maintain a sole source of truth for the corporate IP space.
 * Senior to expert-level experience with core networking and routing protocols, including TCP/IP (Layers 1-7), BGP, OSPF, and EIGRP.
 * Experience securing hybrid-cloud environments (AWS, Azure, Google Cloud Platform) using cloud-native networking like VPCs, Security Groups, and Cloud Next-Gen Firewalls is a plus
 * Toolchain Lifecycle Leadership: Direct the evaluation, selection, and deployment of enterprise-grade security tools, ensuring they resolve specific technology gaps and align with carrier-grade security standards.
 * Domain Leadership - Provide input on programmatic and technical deficiencies to secure and optimize Wintrust's network security posture., * Bachelor's degree or equivalent experience
 * 5-7 years of related hands-on experience
 * Networking: strong command of TCP/IP, BGP, OSPF, MPLS, and SD-WAN optimization; Proficiency in both on-premises and cloud network design
 * Security: Expertise in Next-Generation Firewalls (NGFW), Virtual Private Networks (VPN), Intrusion Detection Systems / Intrusion Prevention Systems (IDS/IPS), Domain Name Systems (DNS), IP Address Management (IPAM), Web Application Firewalls (WAF), Network Access Control (NAC), Network Detection & Response (NDR), and enterprise proxies such as BlueCoat, Netskope or comparable technology.
 * Preferred tooling: AlgoSec, Cisco Firepower (FMC/SMA), Cisco IPS/IDS, Infoblox, Cloudflare WAAF, and Cisco Secure Web Appliance, Azure Networks (VNet, peering, Network Security Groups, UDR)

## Description

The Senior Network Security Engineer is responsible for oversight and governance input on design, implementation, and continuous improvement of Wintrust's enterprise network security program. In this role, you will function as a senior technical authority in designing and maintaining robust security architectures and working with information technology partners to help safeguard enterprise infrastructure. Your role centers on a deep command of network protocols (TCP/IP, BGP, OSPF), next-generation firewall management, and SD-WAN optimization to ensure resilient data flow and threat mitigation. Enhanced knowledge of VPNs, IDS/IPS, DNS, IPAM, enterprise proxy and Zero Trust principles are core for helping promote growth and maturity of the network security program.


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