Main responsibilities:- Service Management for client base on ITIL.- Cloud operation on Azure, GCP.- Familiar with AWS Services: EC2, S3, Lambda- Working with Kubernetes for investigate and troubleshooting issues relate legacy application, webapp, infrastructure and escalate another team if needed.- Working with Gitlab for troubleshoot issues related to pipeline, permission, modify config.- Terraform code provisioning cloud resources.- Working with Azure DevOps Repos, Pipeline to config logs, add the alerts, provisioning VM from ARM Template.- Active Directory management- Linux and Window OS management- Document technical related to the issue, problem faced.

Main Responsibilities - Operate and maintain Directory Service (AD, DNS, DHCP, GPO, Azure AD Connect)- Operate and maintain VMware vSphere system. - Operate and maintain Google Workspace Service (Mail, Drive, Integrate) - Design, Deploy and maintain Jira Service (Jira Service Management, Jira Software, Confluence) - Deploy and maintain monitor system (Graylog, check_mk) - Deploy and maintain O365, Azure Service (Azure Active Directory, MFA, AIP, DLP, Intune, Sharepoint, Teams integrate,) - Handle tickets related to Attune System. - Analyze and Troubleshoot server/platform-related issues. - Document corporate server/storage/platform infrastructure.ACHIEVEMENTS:• Migrated Google Workspace to Microsoft O365.• Implemented Sensitive label and DLP on Microsoft O365.• Built up and improved ticket system JIRA (workflow, automation, approve, request, incident )• 99,99% SLA archived availability of System and archived Data availability and safety.• 99,99% SLA on the ticket being maintained

Main responsibilities:- Manage and operate infrastructure services: AD, Radius, DHCP, DNS, File, WSUS, Proxy, Web, Database.- Working on Windows and Linux environments.- Manage and operate: VMware/Nutanix/Hyper-V.- Working with Private like Higio Cloud and Public Cloud like Azure, AWS.- Experience with Google Workplace and O365- Working with network and security devices: Cisco, Palo Alto, Checkpoint.- Daily check and monitor the performance of all core components at Data Center,including servers, network devices, UPS system, air-conditioner, Fire Suppression System, Smoke Detection System, CCTV Camera to ensure its normal operation.- Manage backup and restoration system - tape library for all the data. Maintain and follow the library tape backup routine including add policy, job backup scheduling, replace routine tape, and transfer tape offsite to another location.- Experience with Backup Solution: Veeam, Backup Exec, NetBackup.- Working with monitoring systems: check_mk, Zabbix, Solarwind, Grafana, PRTG.- Experience with Syslog monitoring: Graylog, SIEM.ACHIEVEMENTS:• 99,99% SLA archived availability of System and archived Data availability and safety.• 99,99% SLA on the ticket being maintained

Main responsibilities:- Monitor and supervise the projects related to Multinational Company (MNC customers)- Introduce and consult customers to use services: Internet Leased Line, P2P, MPLS, IPLC, E1,High Availability solutions,... - Explain solution, questions of customers via phone and email.- Planning, timeline implementing the project- Follow up project and ensure it completed with the deadline defined.

Main responsibilities:- Monitor and troubleshoot network problems for corporate customers, related to Internet Leased Line, FTTx, P2P, MPLS, LAN,...- Working with monitoring systems: Cacti, PRTG- Configured Router/Switch: Cisco, Juniper, DCN, Alcatel-Lucent,...- Deployment Office 365 for 100 Users of KFC Vietnam

Main responsibilities:- Handle technical problems related to : FTTH , CCTV and IPTV- Handling incidents arising at Customer's home- Coordinate with departments (NOC, etc) to debug and fixed for Customers- Advice, guide customers to optimize the use of services and troubleshoot simple incidents- Recognize direct feedback from customers and coordinate with relevant departments for process