Linux System Administrator at DXC Technology, PhilippinesApril 2018 - Present• Responsible for ongoing vulnerability management by coordinating and deploying patches and server rebuilds throughout using HPSA tools. • Designated as SPOC for meltdown/spectre patching for RHEL 6 and RHEL 7• Responsible for operational support and maintenance of 1,000+ servers located globally, running Red Hat Enterprise Linux with some Solaris. This includes server builds, monitoring, configuration and ongoing maintenance of servers.• Perform system administration duties across the environment to provide support services for customer.• Perform system recoveries. • Maintain server availability for all sites and periodically participate in DR exercises. • Possesses problem solving, teamwork, communication and customer service skills. • Resolving help desk escalations and process items in a ticket queue. • Provides after-hours on call requirements• Troubleshoot and resolve system issues and provide operations support for bridge calls. • Participate in the implementation of UNIX related projects for server builds. • Monitor servers and remediate alerts that get raised.

• Managed system changes through change request process & provide status reports to the relevant parties• Respond promptly on IT Security matters such as incident response, incident investigation, intrusion detection management and impact analysis. Provide timely status updates to relevant parties• Monitored and measured the performance and availability of systems proactively, implement corrective actions identified to improve performance and availability• Monitored the agreed service level, document & maintain the configuration of the systems, provide regular reporting to relevant parties• Implemented service continuity measures, i.e., backup/restore procedures & disaster recovery plan, to ensure continuous operation of the business• Integrated security principles, methods and techniques into the security management life cycle• Ensured the management of ICT security systems adhered to established ISO20000 and ISO27001 processes/procedures, ITIL best practices and methodologies where applicableSKILLS SET: Change and Incident Management ArcSight Splunk

• Log and Threat Analysis (Powerbroker, CyberArk)• Perform root cause analysis related to file integrity security alerts • Investigated privilege sessions and host-based security incidents generated by ArcSight• Investigated/ Audited privileged server or device sessions • Mentored and advised Junior Unix/ Firewall/ Network Analysts• Reviewed and processed privilege password requests from Cyberark• Research trends and countermeasures in computer/network vulnerabilities, exploits, and malicious activity• Reviewed ssh keys compliance to prevent internal threat non-standard connections

• Ensure high availability of Unix and Linux production servers by taking necessary actions in case of server alerts and notifications.• Perform systems administration tasks on the above mentioned servers. Tasks include monitoring, first line troubleshooting, and other tasks in managing enterprise servers.• Handles change management procedures for activities involving multiple servers• Provide incident management for critical servers requiring immediate return to production• Provides the necessary documentations for the procedures used for building the servers.

• Administer the Unix server of my team, which we used for our learning environment.• Acts as mentor to other Unix system administrators to guide them in increasing their Unix skills all the way to attaining their Unix certification.• Led a mix team of Windows and Unix administrators and monitoring their progress by providing them the right administration skills and trainings until their deployment to their projects.

• Working in a team to ensure that critical production incidents get resolved in a timely and efficient way.• 24x7 tactical support to tester manufacturing operations, attends to customer incident tickets and requests. Do immediate diagnosis and troubleshooting of the problem. • Acts as a front-line interface to users; provides direct support to production during network/tester infrastructure downtime incidents.• Perform the following tasks: user account management, production test program releases, workstation and tester setup, file system backup and retrieval, maintain networked printers and software troubleshooting.

• Administer the Unix server of my team, which we used for our learning environment.• Acts as mentor to other Unix system administrators to guide them in increasing their Unix skills all the way to attaining their Unix certification.• Led a mix team of Windows and Unix administrators and monitoring their progress by providing them the right administration skills and trainings until their deployment to their projects

• Responsible for administering, monitoring and setup of manufacturing server, client, tester workstations (Trillium testers) infrastructures including user accounts, disk space allocation, managing file systems, system capacity, NIS and NFS administration.• Installation and setup of new devices including tester workstation, servers, and administering of software packages and patches.• Support Product startups and integration• Leads the projects on infrastructure improvement, OS migration, and EOL of Legacy machines .• Documenting all job process and procedures, including, extensive internal testing before the infrastructures are put in production.• Monitor and improve system uptime. On call support.• Monitor uptime and utilization of servers and maintain security and data integrity.• Represented the site as the lead UNIX Security person who is responsible for the site’s compliance to UNIX patches and security settings of UNIX machines.

• Responsible for the management of 24x7 IT operations support, which included resolving any day-to-day IT infrastructure problems, implementation support for system admins, and execution of repetitive operations activities (backups, restore, reclaim).• Managed the shutdown and startup activities of IT infrastructures (servers, network, telecoms) during scheduled Data Center shutdown. With this, the level 2 support need not be physically present during such activities.• Ensured that regular inventory of all IT equipments including servers, and desktops in Mfg area, of which the software installed are also audited, are done on time.• Managed PC maintenance agreement and Server PM contracts with vendors and negotiates prices on all purchases and services rendered.• Created SLA documentations, disaster recovery plan or business continuity plan, process, operational manual and procedure for specific infrastructure and manufacturing support.