Romel Costelo

• System Administration and platform
engineering
• Build and support multiple customer
environments
• Assist with designing Cloud solutions
• Assist with maintaining system architecture
• Assist with researching, developing, and
maintaining network security procedures and
policies, ensuring adherence to local and
international standards and governance
requirements.
• Monitor and measure the performance of the
environments; resolving and reporting
problems to the appropriate individuals.

• Maintain documentation of the network,
processes, policies and procedures
• Knowledge transfer, training and mentoring of
junior staff
• Provide rotational on call support for our 24x7
P1 service
• Perform unit testing of all work and document
code as per guidelines.
• Triage reported software defects, debug issues,
isolate issues and fix or identify appropriate
workarounds or necessary design changes.
• Ensure that implementation projects /
programs are completed in accordance with
established timeframes and budgets.
• Ensure that work allocated is completed or
issues escalated in a timely fashion to ensure
budget imperatives can be satisfied.
• Abide by SLA targets
• Uphold ISO 27001 requirements
• Uphold privacy and data protection
requirements as per applicable legislation.
• Complies with Health and Safety policies and
procedures on and off site.
• Ensure the health and safety of yourself and all
other people.
• Provide feedback to the Health and Safety
System

A member of the Global IT Infrastructure & Services team, responsible for managing the company’s cloud infrastructure using the ff technologies below:

• Cloud: Microsoft Azure;
• Enterprise Server OS: Microsoft Windows Server, Linux systems;
• Virtualization: VMWare vSphere, Citrix XenApp;
• Database technologies: Microsoft SQL Server;
• Web Application Services: Microsoft IIS, JBoss;
• Enterprise Monitoring Tools: Check MK, Nagios;
• Backup Solution: Azure Backup, Commvault;

Specific responsibilities such as:

• Perform system monitoring & troubleshooting
• Manage Cloud infrastructure
• Storage & LUN management
• Virtual server management
• Backup and Recovery
• System’s performance analysis
• Proactive and corrective actions
• Operating system, security patches
• Management of data backup procedures
• Define & maintain operational procedures
• Follow change management procedures
• Develop system management utilities
• Deploy new releases of application
• Installing data patches
• Complies with relevant Management Systems
• Reduced downtime by proactively identifying and resolving potential issues through thorough system monitoring.
• Established effective communication channels between IT support staff and end-users, leading to improved issue resolution times overall.

• Provided windows infrastructure support for various airline check-in systems, managed servers from various locations across Australia, Europe, and America.
• Responsible for the implementation, troubleshooting, improvement, and high availability of Windows servers (Windows servers 2008, 2012, 2016, 2019).
• Supported various virtualization infrastructures (VMware, Nutanix, Citrix) from provisioning, capacity planning, and management.
• Monitoring server alerts captured by Microsoft System Center Operation Center (SCOM) based on ITIL (Incident/Change/Problem management).
• Supported multiple windows roles from Domain controllers (Active Directory, DHCP, DNS), Database (Failover Clustering, NIC Teaming), Storage (LUN's, iSCSI, Powerpath), and Security Hardening (SEPM, Symantec, Patch Management).
• Initial support for troubleshooting and managing data center servers. Escalation to Datacenter engineer and third-party support.
• Involved in Root Cause Analysis through reports based on but not limited to performance analysis, SCOM Reporting, SCCM Reporting, Dynatrace, and VM Events. Provided development team dumps needed for Application related issues.
• Developed automation tools using Powershell scripting

• Provided technical support for over 5000+ workstations of Internal company infrastructure.
• Responsible for troubleshooting issues related to Desktop, Laptop, Print and File services and Operating Systems.
• Ensures that workstation complies with security standards and ISO certification.
• Managed to be a part of different OS migrations from Windows 2003 to 2017. Office Application migration from 2007 to 2013.
• Participated on company's Business Continuity Management (BCM's) and Disaster Recovery solutions.
• Managed asset inventory using Flexera software.
• Liaison between business and 3rd party support (DELL, HP, Acer and Lenovo).
• Network VLAN conversion using putty.