Nhân Thành

Hands-on Database Administrator with 3+ years managing mission-critical systems in Banking and Finance. Direct ownership of end-to-end database services — installation, configuration, incident handling, performance tuning, backup & recovery, security compliance, and DR planning. Strong practical experience with Oracle RAC / Data Guard, SQL Server AlwaysOn, PostgreSQL, and cross-platform ETL pipelines (ODI 12c).

Consistently focused on SLA delivery, operations automation, and proactive monitoring in regulated environments.

Senior Database Administrator at HD SAISON Finance Co., Ltd. (2025-07 – Present)

• Own end-to-end DB service delivery across Oracle 11g/12c/19c, SQL Server 2019, PostgreSQL — maintaining 99.9% SLA in a regulated finance environment.
• Lead incident response for EOD failures, blocking/deadlock events, and wait-event escalations; contribute to problem management and root-cause analysis.
• Manage change and configuration across DB services; coordinate with app and infrastructure teams on planned changes to minimize service impact.
• Maintain SOPs, incident runbooks, and disaster recovery plans; conduct periodic DR drills to validate continuity readiness.
• Deploy and operate Oracle Data Guard and SQL Server AlwaysOn; multi-tier backup strategy using RMAN incremental + automated NAS/FTP export.
• Monitor capacity, storage utilization, and continuity risks; proactively identify and remediate issues before SLA impact.
• Performance diagnostics with AWR / ADDM / SQL Tuning Advisor — achieved ~40% improvement in critical query execution times.
• Advise development teams on indexing, partitioning, and query design to prevent recurring bottlenecks.
• Build and operate cross-platform ETL pipelines with ODI 12c — Oracle, SQL Server, PostgreSQL sources into a centralized Data Warehouse.
• Design Star/Snowflake schema (Fact/Dimension modeling); reduced business reporting time by ~50%.
• Automate job monitoring, alert notifications, and UAT environment refresh — eliminating manual handoffs.
• Reduced manual operational workload by ~70% — scripted backup verification, ETL health checks, disk usage alerts, and performance email reports.
• Implement automated database checklists (daily/weekly/monthly) and proactive alerting for capacity and service health KPIs.

Database Administrator at Nam A Bank (2023-12 – 2025-07)

• Install and configure Oracle RAC, ASM, Grid Infrastructure; manage SQL Server 2019 Cluster in a high-availability banking environment.
• Design and operate backup strategy: RMAN incremental + automated.bak export to NAS/FTP; validate integrity via periodic recovery drills.
• Build centralized monitoring with OEM Cloud Control + Zabbix; implement real-time alerts via Telegram/Email — proactive detection before escalation.
• Implement TDE, Data Masking, Database Auditing, RBAC — full compliance with banking security and regulatory standards.
• Develop automation scripts for backup verification, database health checks, and performance metric reporting.
• Coordinate with infrastructure and application teams on changes, patching, and service transitions.
• Build and maintain incident runbooks, SOPs, and disaster recovery documentation.

Bachelor of Information Security in Information Security – University of Information Technology – Vietnam National University Ho Chi Minh City (2019 – 2023)