Jun Woo Email & Phone Number

San Antonio, Tx, Us

Dublin 2, Ie

• Collaborated with Cybersecurity department to maintain compliancy of system servers by reviewing Common Vulnerabilities and Exposures (CVEs), Plan of Actions and Milestones (POA&Ms), and create change request tickets to prioritize patching based on criticality, urgency, and impact.• Administered, operated, and maintained Assured Compliance Assessment Solution (ACAS) vulnerability assessment tool – Security Center and Nessus Scanner.• Skilled in generating detailed vulnerability reports that identify risks, impacts, and actionable remediation strategies, enhancing overall cybersecurity posture.• Experienced in implementing and managing Security Technical Implementation Guides (STIGs) to ensure compliance with security best practices to enhance compliance and system hardening efforts.• Conducted regular patch management by reviewing, testing, and coordinating the deployment of patches, updates, and security fixes across all systems, applications, and infrastructure in a DoD environment through AWS & AWS CLI.• Designed, implemented, and provided ongoing support of the AWS infrastructure by proactively ensuring weekly system backups and decommission unused AWS servers for a clean environment.• Optimized and created countless how-to guides for processes developed on the fly regarding troubleshooting or system infrastructure needs.• Utilized stellar customer service skills to assist users in account creation and troubleshooting for DoD applications.• Leveraged ServiceNow to track metrics/tickets and extensively document/work with users and their issues with an average monthly ticket count of 250 to 300 since hire date.

San Antonio, Texas, Us

• Support SandTech’s commercial client during onboarding, performed requirement analysis, researched new or alternate technologies, designed, tested, and implemented new functionality for client organizations.• Handpicked as the direct liaison to several of SandTech’s commercial accounts. Acts with a level of autonomy in providing solutions to streamline client business operations. These include, but not limited to, support development and design of architecture, policies, and procedures, including instructions, for the installation, operation, backup, data recovery, configuration, administration, hardening, system maintenance, and troubleshooting of security platforms. These platforms perform firewall, virtual private network, data aggregation, data filtration, and store forward functions.• Direct support of the SandTech IT Department; responsible for maintaining the Local Area Networks (LAN), Wide Area Networks (WAN), and Network segments that occupy on-premises locations and portions of the Microsoft Azure cloud space.• Performs actions as directed by the Director of IT, that modify SandTech systems to comply with NIST800-171 controls satisfying CMMC levels. These actions range from configuring network firewalls and network IDS/IPS to installing system updates and application specific updates.• Filled a needed position that deals with the creation and revision of relevant practices and processes of SandTech’s managed security offerings. Adhering to strict ISO 20000 standards, was charged with macro and micro projects that ranged from building from the ground up technical procedures that streamline service offerings and reshaping outdated practices to reflect the most current operational state. ITILv4 Foundations certification during this period further reinforced contribution to the organizations ISO audits.

San Antonio, Tx, Us

•Maintained computer networks and related computing environments including computer hardware, systems software, applications software, and all configurations•Monitored data backups and disaster recovery operations•Diagnosed, troubleshot, and resolved hardware, software, and other network and system problems•Monitored performance of computer systems and networks and coordinated computer network access and usage•Managed the IT helpdesk and provided internal customer service, prioritized incoming support requests, scheduled maintenance and trend analysis in incident management

College Station, Tx, Us

•Performed advanced networking and computer troubleshooting services for internal customers•Resolved issues submitted to IT helpdesk, installed new computer workstations, and troubleshot hardware/software•Implemented hardware and software updates across all Windows workstations

Dayton, Oh, Us

•Repaired and restored hardware including PCs, printers, servers, scanners, networking equipment, monitors, and key tracking systems•Worked in a specialized team to run configuration tests on hardware