Crenz Avendaño

Results-driven Senior Systems Administrator with 5+ years of enterprise IT experience managing large-scale infrastructure including 3,000+ servers for banking industry clients. Proven expertise in Microsoft Azure, Active Directory/Entra ID, Microsoft 365, Linux server administration, and endpoint security. Demonstrated ability to maintain 24/7 uptime for mission-critical systems, automate operations using Ansible and PowerShell, and lead incident response under pressure.

Experienced in multi-tenant environments supporting global clients across 5 international servers. Adept at working independently in remote setups across US and Australian time zones.

Technical Analyst — HRIS & Application Management - TransparentBPO - Onsite at Achievers

(2025-07)

• Managed multi-tenant HRIS client applications across 5 global servers ensuring accurate data flow and 99.9% program functionality uptime
• Analyzed HRIS files, resolved data inconsistencies, and created Jira cases for escalated investigations reducing resolution time by 30%
• Served as primary client contact for program operations — handling escalations, notifications, and stakeholder communication for US-based clients
• Configured group logic, column mapping, and application settings across multiple tenant environments simultaneously

Analyst II — Cloud Engineer - DXC Technology

(2023-06 - 2025-07)

• Managed and maintained 3,000+ Linux and Windows servers for banking industry clients ensuring 24/7 uptime and zero-tolerance for downtime
• Led critical incident response including multiple simultaneous production server failures — coordinated vendor replacement and resolved hardware issues within 4 hours while maintaining client communication via Teams war room
• Implemented Ansible automation for patch management across enterprise server fleet reducing manual patching time by 80%
• Applied OS configurations, security hardening, and patches using systematic change management including UAT testing before production deployment
• Deployed cloud infrastructure in Azure including VM provisioning, storage management, disk and RAID configuration on Dell and HP hardware

Technical Support Engineer - Alorica

(2022-02 - 2023-06)

• Managed Azure Active Directory accounts including user provisioning, MFA enforcement, Conditional Access policies, and security group assignments
• Configured Group Policy Objects to enforce security standards and handled Tier 2 technical support for hardware, VPN, and account access issues
• Handled MFA troubleshooting including device registration, re-enrollment, and account recovery following strict security verification protocols

SC Engineer / Technical Engineer - Emerald Wireless Technology Inc.

(2021-08 - 2022-02)

• Diagnosed and repaired mobile devices across hardware, network, and software layers
• Managed inventory systems and communicated repair outcomes to clients maintaining strong customer satisfaction

Bachelor of Science - Computer Technology - Eulogio Amang Rodriguez Institute of Science and Technology (2016 - 2020)

High School Diploma - GMA Technical High School (2010 - 2015)