Network Security Engineer

DV Trading

DV Trading is a North American-based proprietary trading firm with a significant presence on derivatives and securities exchanges worldwide.About Us:Founded more than 15 years ago and headquartered in Chicago, the DV Group of financial services firms has grown to more than 350 people operating throughout North America and in Europe. Since spinning out of a large brokerage firm in 2016, DV Trading has rapidly scaled as an independent proprietary trading firm utilizing its own capital, trading strategies, and risk management methodologies to provide liquidity to worldwide financial markets and hedging opportunities to commodity producers and users. Now, DV group affiliates include two broker dealers, a cryptocurrency market making firm, and a bourgeoning investment adviser.Overview:We are seeking a skilled Network Security Engineer to join our team and take charge of securing, monitoring, and maintaining our corporate network infrastructure. The ideal candidate will have extensive hands-on experience with firewalls, network security tools, and protocols, ensuring our organization maintains a strong security posture. This role requires deep technical knowledge, troubleshooting abilities, and collaboration skills to work closely with the Security and IT teams. You will be responsible for securing networks, identifying potential vulnerabilities, and recommending effective 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.

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