Network Security Manager

DONALD TONG

Concord, CA ***** 707-***-**** *********@*****.***

SUMMARY: Innovative, dedicated, and results orientated network manager experienced with Cisco IOS-based, Ruckus/Brocade ICX switches installation, maintenance, and 24/7 support of LAN/WAN infrastructure. Management / troubleshooting of network and associated systems, including routers, switches, firewalls, servers, desktops, applications, and general tier 3 support for all network related systems and processes. Problem-solving and leadership skill and coupled with a solid work ethic and capacity to function well under pressure. Skilled in a variety of programing languages and CLI.

CISCO CERTIFICATION: CCNA valid from 11/30/2023 to 11/30/2026

SKILLS & ABILITIES:

Network Design and Architecture: Proficient in designing and implementing robust network architectures, including LAN, WAN, VPN, and wireless networks. Experienced in selecting appropriate hardware and software solutions to meet organizational requirements.

Network Security: In-depth knowledge of network security best practices, including firewalls, intrusion detection and prevention systems, encryption protocols, and vulnerability assessment. Skilled in implementing security measures to protect against cyber threats.

Network Troubleshooting and Optimization: Proven ability to diagnose and resolve complex network issues promptly. Experienced in using network monitoring tools to analyze performance, identify bottlenecks, and optimize network infrastructure for maximum efficiency.

Team Leadership and Collaboration: Strong leadership skills with the ability to effectively manage cross-functional teams. Experienced in providing guidance, training, and mentoring to junior network engineers. Proven track record of fostering collaboration and teamwork to achieve project goals.

Project Management: Skilled in managing network projects from inception to completion, ensuring timely delivery and adherence to budgetary constraints. Proficient in defining project scope, allocating resources, and coordinating tasks to achieve project objectives.

Documentation and Reporting: Proficient in preparing comprehensive network documentation, including network diagrams, configurations, and standard operating procedures. Skilled in generating regular reports to communicate network performance, project updates, and security risks to key

Vendor Management: Demonstrated expertise in evaluating, selecting, and managing relationships with third-party vendors and service provider’s stakeholders.

PROFESSIONAL EXPERIENCE:

USS-UPI (United States Steel Company) February 2003 – January 2024

Network Manager January 2018 – January 2024

Led a team of network engineers in planning, implementing, and maintaining the organization's network infrastructure across multiple locations.

Designed and deployed scalable and secure network architecture, resulting in increased network performance and improved reliability.

Implemented network security measures, including Palo Alto firewall configuration, VPN setup, and intrusion detection systems, reducing the risk of unauthorized access and data breaches.

Oversaw network troubleshooting and resolved complex network issues, ensuring minimal downtime and high availability of critical network services.

Conducted regular network audits and vulnerability assessments to identify potential security risks and implemented appropriate countermeasures.

Managed vendor relationships and negotiated contracts with network equipment suppliers, resulting in cost savings and improved service quality.

Developed and implemented network policies, standards, and procedures to ensure compliance with industry regulations and best practices.

Provided technical guidance and training to junior network engineers, fostering their professional growth and ensuring a high level of expertise within the team.

Collaborated with cross-functional teams, including IT, operations, and security, to align network infrastructure with business requirements and strategic goals.

Designed and implemented LAN/WAN solutions, including network switches, routers, and wireless access points, to meet the organization's connectivity needs.

Monitored network performance using tools such as Wireshark and SolarWinds, identified performance bottlenecks, and implemented optimization strategies.

Configured and maintained network security devices, such as firewalls and intrusion detection systems, to protect against unauthorized access and security threats.

Collaborated with cross-functional teams to support the deployment of new project.

Automation Engineer February 2003 – December 2017

Design, develop, and implement automation systems for various steel manufacturing processes, including rolling mills, blast furnaces, and continuous casting.

Collaborate with cross-functional teams to understand process requirements, identify automation opportunities, and develop effective solutions to enhance production efficiency and product quality.

Program, configure, and troubleshoot PLCs, HMIs, and DCS systems to control and monitor critical process parameters and equipment.

Conduct regular system maintenance, upgrades, and software updates to ensure optimal performance and reliability.

Conducted testing and troubleshooting of PLC programs and HMIs to ensure proper functionality and reliability.

Participated in system commissioning and startup activities, working closely with the operations team to ensure smooth integration.

Developed and maintained technical documentation, including system specifications, user manuals, and troubleshooting guides.

Support 24x7 operation Alpha/VAX supervisory computer systems and Windows based operator interface

Implement communication interface with real time control systems

EDUCATION

Bachelor Of Science in Computer Science June 2002 California State University, Sacramento

LANGUAGES

Chinese (Advanced)

English (Advanced)

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