Lisa Beatty 🔐 Email & Phone Number

Dallas, Tx, Us

During my tenure at AT&T, I played a pivotal role in transforming cybersecurity for a global information services company by implementing a Secure Access Service Edge (SASE) architecture with Zscaler Zero Trust Exchange. This initiative bolstered cyber defenses, enforced rigorous security policies, and aligned with global compliance standards. Integrating key services such as Secure Web Gateway (SWG), CASB, DLP, and Firewall as a Service (FWaaS), I empowered the client to navigate an increasingly complex threat landscape.I also led complex firewall policy analysis and data center migrations, transitioning from legacy systems to FortiGate and Zscaler solutions with minimal disruptions. My focus on quality assurance for WAN/LAN/WLAN infrastructure reduced configuration errors by 90%, and my proactive troubleshooting approach enhanced incident response, minimizing reliance on customer-reported issues.To support efficiency and knowledge transfer, I developed SOPs, Wiki pages, and training materials that streamlined onboarding and empowered team members. Mentoring junior engineers was also a priority, fostering a culture of continuous learning. Addressing gaps in incident response, I optimized automated ticket generation, improving response times and operational resilience.Additionally, I leveraged cost-saving strategies, such as Cisco Prime wireless heatmaps, to eliminate costly on-site surveys and ensure optimal network performance. My commitment to exceeding expectations earned multiple awards, while strong client relationships allowed me to provide in-depth training on Zscaler and FortiGate, empowering clients in managing their security challenges.

Upon my return to CSC, this time in the commercial sector, which would later merge with the Enterprise Services division of Hewlett Packard Enterprise to form DXC, I focused primarily on the F5 BIG-IP LTM platform for a global insurance provider. I leveraged iRule scripting for such tasks as implementing advanced content switching and access control policies. Additionally, I configured virtual servers, pools, and profiles, managed SSL/TLS certificates, and monitored network traffic. By mentoring team members, I empowered them to independently troubleshoot and resolve complex network challenges.

As a Network Infrastructure Specialist, I played a crucial role in safeguarding client payment data by implementing and maintaining robust PCI-DSS compliant solutions. I deployed and managed high-availability Cisco ASA firewalls to ensure secure network infrastructure.Additionally, I established and maintained secure B2B communication channels by creating and troubleshooting VPN IPSec tunnels using Juniper Netscreen. My expertise in network security has contributed to protecting sensitive data and ensuring compliance with industry regulations.

Fort Lauderdale, Fl, Us

In this role, I conducted penetration testing to identify and mitigate vulnerabilities in critical infrastructure for a multinational financial institution. My work aligned with SOX requirements to ensure regulatory compliance.I utilized ArcSight SIEM for proactive threat monitoring, enabling rapid detection and response to security incidents. Additionally, I employed Symantec Enterprise Security Manager and Tenable Nessus to conduct vulnerability assessments across Windows, Linux, and UNIX platforms. My expertise in penetration testing and threat management contributed to safeguarding sensitive information and mitigating risks within the organization.

During my first tenure at CSC, I worked in the federal support sector, which later merged with SRA to form CSRA and ultimately became part of GDIT. I secured and maintained critical network infrastructure for a federal Department, ensuring compliance with FISMA standards by remediating known vulnerabilities and minimizing downtime. My approach included leveraging NIST 800-53 controls for proactive risk mitigation.I played a pivotal role in the migration from Symantec Enterprise Firewall to Cisco ASA firewall, successfully identifying and analyzing undocumented configuration files and creating ASA policies to ensure continued security of the agency's network operations. My expertise in network infrastructure security contributed to the protection of sensitive government data and the maintenance of operational continuity.