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Abigail Silas

@abigailsilas1

Message

Senior Database Administrator specializing in Oracle and PostgreSQL performance and HA/DR.

Nigeria

Message

What I'm looking for

I’m looking for a role where I can own enterprise databases end-to-end—designing HA/DR, improving performance, automating operations, and partnering across teams to deliver secure, scalable, cloud-ready data systems.

I’m a results-driven Senior Database Administrator with 5+ years of experience designing, optimising, and managing enterprise Oracle and PostgreSQL environments across energy, banking, telecommunications, and IT. I focus on high-availability architecture, disaster recovery, performance tuning, large-scale migrations, and database security.

In my current role, I design and optimise Oracle and PostgreSQL systems for mission-critical operations, plan schema changes and upgrades with minimal downtime, and architect cloud-based backup, recovery, and DR processes. I proactively monitor performance using AWR/ADDM and Oracle OEM, automate administration with Shell scripts, and lead capacity planning while coordinating complex incident resolution.

Previously, I managed Oracle 11g/12c/19c for 24/7 banking availability, implemented Oracle Data Guard, administered Oracle RAC/ASM, and executed major migrations (including VX-Block to Oracle Exadata and Finacle 10 to Finacle 11 across six countries). I also provide Data Protector support at enterprise scale, and I back my practice with relevant Power BI and Oracle/Microfocus certifications.

Experience

Work history, roles, and key accomplishments

Current

Senior Database Administrator

Current

Ikeja Electric

Dec 2025 - Present (4 months)

Design, implement, and optimize Oracle and PostgreSQL database environments to support high-availability, mission-critical operations in the energy distribution sector. Lead cloud backup/recovery and disaster recovery planning, performance monitoring, database security, and incident escalation.

PostgreSQL High Availability Oracle Performance Tuning (AWR ADDM)Shell Scripting Database Security Capacity Planning AWS RDS

Oracle Database Administrator

First Bank of Nigeria

Aug 2022 - Nov 2025 (3 years 3 months)

Managed and optimized Oracle 11g/12c/19c databases across multiple platforms to support 24/7 banking availability. Implemented Oracle Data Guard, administered Oracle RAC/ASM, executed terabyte-scale migrations and upgrades, and led core-banking Finacle 10 to Finacle 11 database migrations across six countries.

Oracle 12C ASM Shell Scripting Disaster Recovery Planning

Oracle Database Administrator

CWG Plc

Feb 2022 - Aug 2022 (6 months)

Administered mission-critical Oracle RAC 11g/12c environments, covering installations, upgrades, migrations, and ongoing performance tuning. Managed security controls, patch deployments, archive log management, and RMAN backup/restore for single instance and RAC environments.

Oracle RMAN Oracle Upgrade Patching Log Management Performance Tuning Capacity Monitoring Shell Scripting

Technical Support Engineer - Data Protector

Tek-Experts

Jul 2020 - Feb 2022 (1 year 7 months)

Provided enterprise technical support for Microfocus Data Protector, owning customer incidents through resolution within SLA requirements. Maintained detailed incident records and contributed to knowledge base development, earning recognition as a Top 3 performer in the Microfocus line of business.

Incident Management SLA Management Escalation Handling Troubleshooting Knowledge Base Customer Support

Database Administrator

Quomodo Systems Limited

Mar 2019 - Mar 2020 (1 year)

Designed and implemented PostgreSQL and MySQL databases based on end-user requirements and system architecture. Built SQL queries and documentation, performed data analysis and visualization with Power BI, and managed SharePoint and Active Directory for user and access management.

PostgreSQL MySQL SQL Queries Power BI Active Directory Administration Data Visualization Access Management