Ron Cho Email & Phone Number

Round Rock, Tx, Us

Round Rock, Texas, United States

Austin, Texas

• Managed the company’s Office 365 tenant – Manage Exchange Online with PowerShell scripting and from Office 365 Admin console to provision new users and licenses, manage distribution lists and security groups, managed shared mailboxes, managed mailbox delegation permissions, set security policies, managed white and black listing, configured Azure directory sync, troubleshot mail flow. Responded to Office 365 alerts to ensure security and safety of the tenant users.• Supported the customer management service team by providing services in AWS IAM, EC2, S3 storage, Route 53 and DynamoDB that was essential to helping customers to meet and maintain series of regulations in the medical industry.• Enrolled and renewed the SSL certifications on ADFS to provide the uninterrupted daily operations that relied heavily on the SSO and security.• Managed the company's Active Directories in three different domains for user provisioning, created security and distribution groups, managed group membership, managed users’ AD account attributes for name change and SMTP change and automated tasks with PowerShell scripting.• Designed the security policies and implemented policies to help the company to comply with the HITRUST compliance guidlines.• Provisioned and managed user accounts and security groups in the company’s DUO MFA tenant to secure access to the company’s sensitive documents and data.• Assisted the product developers to design and debug the customer portals and worked with the customer support team to provide the customers with the • Lead the project to decommission VMware infrastructure to help company transition to be 100% cloud service company in the health care. • Lead the IT team’s effort to bring down the ticket count to a two digit number and successfully brought the count below 30 in the first quarter with the company. • Supported the management team on application consolidation effort to achieve a lean operation cost.

Austin, Tx

• Created and supported the virtual infrastructure using VMware to provide resources and to business group, software development group and IT support group.• Build and maintained MDT computer imaging system to streamlined the process and increased the productivity of the users by eliminating many issues previously seen by unstable imaging process.• Provided support to 24-7 call center operations with various technical issues to help them maintain efficient operations condition for them to provide excellent customer service to company's clients.• Administered various back-end systems and maintain the IT infrastructure for highest business continuity possible.• Handled IT helpdesk tickets to provide support the daily operations of the business users and technical users.• Crated procedure and training documents for the peers for their knowledge growth.• Always try to open a good communication channels with the members of various team to understand their needs to provide support to help them achieve their goals.

Cedar Park, Texas

• HP Proliant server installs, configuration and maintenance for the datacenter collecting drilling data.• Managed and troubleshot various network problems.• Installed MS SQL servers, created databases according to customer specs, managed SQL access and authentication, and administered DB backup creation and scheduling for various DBs used for drilling and monitoring rig activities.• Build and maintain Synology NAS systems for systems and database backups.• Administrated the server virtualization infrastructure with VMware ESXi 5.5, vSphere and vCenter.• Monitored and troubleshot VMs for optimum performance of the virtualized servers for customer data.• Installed and administrated AV servers and clients with Tend Micro OfficeScan 10.6. • Designed, created and administrated application virtualization using Citrix XenApp 6.5 to support internal and external customers with various application needs.• Designed new Active Directory infrastructure, performed inter-forest migration to improve performance of various systems relying on the AD infrastructure. • Successfully migrated over 2500 AD user accounts from the forest consisted of Windows 2003 AD infrastructure to the new forest with Windows 2008 R2 AD infrastructure.• Created new OU structure to help manage users and computers more effectively.• Managed AD sites, trust and schema roles to provide optimum AD system performance.• Use scripts to create users and group in mass quantity to minimize administrative overheads. • Provided the network team with the AD for LDAP and Radius authentication for VPN and other user authentication needs.• Managed Group Policy to help systems security and performance.• Successfully managed Active Directory and Citrix XenApp migration project.

Austin, Texas

• Designed the company’s network infrastructure from scratch to implement network security and redundancy.• Websense Web Security Gateway implementation and administration.• Proprietary business application support and performance analysis.• HP ProCurve L2 and L3 switch network administration.• Windows Server administration and maintenance. Windows 2003, 2008, and 2008 R2.• Daily Windows server administration with Active Directory, Print Server, Group Policy, Terminal Server, and Server Clustering.• PKI implementation and deployment through Microsoft Certification Authority (CA).• WLAN setup and management with Cisco APs and WLAN Controller.• Computer and network hardware asset management• Email administration with Microsoft Office365.• Support users with various computer hardware and software issues through phone or ticketing system• Deploy computer hardware and software to support daily business operations• Create documents such as SOPs for the users and IT staff

Austin, Texas

• Provide technical support in a large corporate environment with over 1500 end users with various computers hardware/software and network issues daily.• L1 to L3 network troubleshooting and administration.• Apply port security and monitor port security violation. • Successfully deployed new computer hardware for Windows 7 migration from Windows XP 1000 end users.• Deploy and set up network printers. • Installation and troubleshooting proprietary manufacturing support system software and DSS.• Windows user account administration with Active Directory.• Provide basic Korean language training to the helpdesk staff.• Provide translation service for the Korean vendors and dispatchers from the HQ.

Austin, Texas

• Performed preventive maintenance on wafer testing systems in EDS.• Daily system troubleshooting to maximize system uptime.• Configured wafer testing system using various OS.• Troubleshoot network problems on wafer testing systems.• Korean document translation.• Translation service for the Korean vendors and dispatchers.• Assisted automation system vendors with system design and layout. • Maintained maximum up time for the semiconductor testing equipment.• Created technical SOPs and manuals for various wafer testing, annealing, and laser repair systems.• Provided translation services for Korean dispatchers and vendors.• Provided technical training to the fellow technicians.• Saved the EDS department $150,000.00 annually by eliminating the need for external service contract by mastering the automation system hardware and software within six months of initial installation.

Austin, Texas

• Assisted hardware design engineers with schematic design, component selection, hardware bring up and hardware testing.• Created hardware debug procedures and designed debug stations for the contract manufacturer.• Debugging system clock jitter analysis in various high speed bus standards such as LVDS, Hyper Transport and PCI.• Reworked PCBs and provided technical advice to the external rework house technicians.• Designed chassis layout for PCBs and system components.• Managed hardware system and component inventory.• Provided hardware technical support for software and QA engineers.• Designed and managed in-house system shipping warehouse.• Successfully built and managed R&D hardware lab.• Set up LAN for hardware and software lab.• Created technical training documents and design hardware debug station for contract manufacturers.

San Jose, California

• Hardware verification testing to discover design and manufacturability issues.• Worked closely with manufacturing engineers from contract manufacturing issues to product packaging design and test.• Assisted hardware design engineers with schematic design, component selection, hardware bring up and hardware testing.• Troubleshot various hardware and mechanical problems using creative solutions.• Assisted chassis design and improvement for the company’s IntruShield IDPS product line.• Created hardware debug procedures and designed debug stations for the contract manufacturer.• Debugging system clock jitter analysis in various high speed bus standards such as LVDS, Hyper Transport and PCI.• Designed chassis layout for PCBs and system components.• Managed hardware system and component inventory.• Provided hardware technical support for software and QA engineers.• Designed and managed in-house system shipping warehouse.• Successfully built and managed R&D hardware lab.• Set up LAN for hardware and software lab.• Created technical training documents and design hardware debug station for contract manufacturers.

Mountain View, California

• Component level debugging of high complex I/O, audio, video and Ethernet PCB for a high-end ultrasound system.• Achieved the lowest PCB inventory that the product line has ever seen.• Discovered several hardware design issues that caused low-yield and reported to the hardware design engineers to quickly implement ECOs to save debug cost.• New PCB bring-up in effort to reduce PCB cost.• Worked with manufacturing engineers to verify the contract manufacturer’s PCB assembly quality.• Verified component’s thermal failures that caused low-yield on JPEG memory design and awarded by the engineering department. • Created SOP, SOE and debug documents for manufacturing specialists and technicians.• Trained the technicians from the contract manufacturer to help the company achieve a turn-key manufacturing project.

Bsit, Computer And Information Systems Security/Information Assurance, 3.55

Associate In Applied Science Degree, Electronics Technology, 4.0