Network Security Engineer

Dv Trading - Chicago, IL

Full-time

Chicago, IL

251-500 employees

About the position

The Network Security Engineer will be responsible for securing, monitoring, and maintaining the corporate network infrastructure of DV Trading. This role requires extensive hands-on experience with firewalls and network security tools, ensuring a strong security posture for the organization. The engineer will collaborate with Security and IT teams to identify vulnerabilities and recommend solutions to mitigate risks.

Responsibilities

• Design, implement, and maintain secure network architectures, including LAN, WAN, VPN, and cloud networks.
• Configure, manage, and troubleshoot firewalls, IPS, IDS, and other network security devices.
• Configure, manage, and troubleshoot web security controls, such as CASB and SWG.
• Monitor security alerts, responding to security incidents in a timely manner.
• Develop and enforce network security policies, standards, and best practices.
• Implement firewall rule sets, access control lists, and policies for intrusion detection/prevention systems (IDS/IPS).
• Monitor and scan our perimeter to identify potential risks.
• Collaborate with cross-functional teams to ensure secure integration of new applications and services into the network.
• Stay updated on the latest security trends, vulnerabilities, and emerging technologies to proactively mitigate threats.
• Participate in on-call after-hours rotation to provide timely support for security events and incidents.
• Take ownership of tasks, ensuring thorough follow-up and resolution of security requests, changes, and incidents.

Requirements

• Experience in network security engineering or related field.
• Proficiency in firewall management and network security protocols.
• Experience with Juniper and Palo Alto firewalls is highly preferred.
• Experience with capturing, analyzing, and interpreting network packet captures.
• Experience with designing, implementing, and troubleshooting site-to-site and client-based VPNs.
• Strong understanding of networking concepts, including routing, switching, and NAT.
• Experience with dynamic routing protocols.
• Hands-on experience with IDS/IPS, SIEM tools, and network monitoring tools.
• Knowledge of encryption technologies, authentication protocols, and threat detection methods.
• Familiarity with cloud security concepts related to AWS, Azure, and GCP is a plus.
• Experience with SD-WAN solutions and cloud network security.
• Familiarity with automation and scripting (Python, Ansible) for network tasks.
• Strong analytical, troubleshooting, and problem-solving skills.
• Ability to manage multiple priorities in a fast-paced environment.
• Excellent verbal and written communication skills.
• Team-oriented mindset with the ability to collaborate effectively across departments.

Nice-to-haves

• Familiarity with cloud security concepts related to AWS, Azure, and GCP is a plus.
• Experience with SD-WAN solutions and cloud network security.
• Familiarity with automation and scripting (Python, Ansible) for network tasks.