Duwaine D Winder

Atlanta, GA - Call Me - Text Me - EMail Me - LinkedIn - Credly

Information Security Engineer and IT Network Professional, experienced in managing critical operations and data networks, leading teams of professionals in planning, developing, and maintaining a secure multi-vendor infrastructure. Proficient in identifying, analyzing, and mitigating security incidents, troubleshooting issues, evaluating alternatives, and recommending effective solutions to support robust network architectures.

PROFESSIONAL EXPERIENCE

Worked with cross-functional teams across the organization responding to security events, ensuring that they are handled as per the company documented policies, procedures and processes in a timely and professional manner.

Handled security events from intake through triage, protection and remediation. Assisted in the technical analysis of security events, producing comprehensive reports that outlined findings, remediation steps, and recommendations for improving overall security posture.

Engaged with and maintained communications with stakeholders at all levels of the organization including IT, legal, management and any affected users, to ensure a cohesive and coordinated response to security events.

• Provided Technical expertise and insight during security event triage.
• Assisted in the on-boarding and training of new hires to the Incident Response Team.
• Assisted in the creation and maintenance of Playbooks/Runbooks and KB's.
• Review log-based data, both in raw form and utilizing SIEM or aggregation tools.
• Employ forensically sound principals for evidence handling and chain of custody.
• Perform live network assessments using packet capture and analysis software tools.

TOOLS: Crowdstrike, Microsoft Defender Microsoft Intune, JAMF, MaaS360, Proofpoint Protection Server, Proofpoint TAP (Targeted Attack Protection), QSOAR, Beekeeper, Magna: Built on top of Kibana (data visualization tool), Wireshark.

• Individual contributor responsible for providing complex IT Security services to clients within the IBM Managed Security Services organization.
• Ensure Confidentiality, Integrity and Availability of data and critical Information Technology services.
• Perform multiple assigned technical tasks including research, analysis, troubleshooting, system integration, and complex root cause analysis of managed security solutions.
• Configure and administer firewall and Unified Threat Management (UTM) Systems/platforms include; Checkpoint, Cisco PIX, Cisco ASA, Cisco ISR, Juniper Netscreen, Juniper SRX, Fortigate, Palo Alto.

• Primarily responsible for the design, configuration, implementation and maintenance of Cisco VoIP solutions.
• Call Manager Express, Unity Express, Auto Attendant, Voice Mail, Hunt Groups, P/U Groups, Single Number Reach, Call Accounting, Site-to-Site, T1 PRI, DID, FXO, FXS, IP Communicator.
• Install, configure and maintain Cisco routers, switches, access points, IP Cameras.
• Conduct network assessments to ensure infrastructure design capable of supporting client current needs and future growth.
• Designed, installed, configured and maintained ISONAS Physical Access Control system for multi-tenant complex.

• Perform site surveys and create detailed site readiness assessment documentation.
• Gather and validate end user extension and dial plan data.
• Plan implementation tasks, including change management and communication.
• Manage vendor interaction and activities as it relates to new services implementation.
• Write configurations with dial-peers, translation rules, SCCP, SRST, SIP, H.323, MGCP.
• Perform test and turn-up for PRI, POTS, and SIP PSTN services.
• Successfully cutover branch offices onto an existing Cisco Call Manager cluster.
• Troubleshooting Implementation of Cisco LAN/WAN Infrastructure Switch & Routing Configuration and Deployment Network Migrations Testing and Troubleshooting.
• Perform proactive monitoring of voice systems, alarms and alerts to identify those components that may lead to or already are causing voice/video/data degradation or failure.
• Support and maintain voice and data VLANS, POTS lines, and VPNs.
• Assist in the root cause determination of network and related problems.
• Perform Call Manager and Cisco Unified Communications Manager version upgrades.
• Stay up-to-date and knowledgeable with current and new technology, including new versions of software/firmware, implementation of upgrades, and changes to procedures/commands.

• Lead a team of technicians, interfacing directly with Medium/Large Government and Private Clients to diagnose, resolve, and minimize service and equipment interruptions in Legacy PBX networks.
• Author and implement department guidelines and workflow processes.
• Prepare and administer department's annual budget.
• Serve as lead on multiple concurrent projects, resolving escalated issues, and scheduling maintenance and update of client equipment.
• Improved overall department efficiencies by reducing technician response times, making onsite customer visits, investigating escalated issues and mitigating future customer dissatisfaction to ensure quality service.

EDUCATION

MISM - Information Systems Management - Keller Graduate School/DeVry University
MNCM - Network & Communications Management - Keller Graduate Sch./DeVry Univ
MBA - International Business - University of Miami
BS - Electronics Engineering Technology - DeVry Institute of Technology

CERTIFICATIONS