Technical Skills

• Databases: Proficient in MariaDB, MySQL, PostgreSQL, MSSQL Server, and DynamoDB.
• SQL Optimization: Strong background in performance tuning, query optimization, and resolving database bottlenecks.
• Data Migration: Extensive experience in designing and executing end-to-end ELT/ETL data migration strategies.
• Backup & Recovery: Skilled in implementing robust backup and disaster recovery solutions.
• Cloud Infrastructure: Solid understanding of AWS services, including RDS, DMS, S3, Transfer Family, and Secrets Manager.
• Data Quality: Expertise in data validation, ensuring accuracy and integrity across systems.

Tools & Methodologies

• Cloud Services: AWS (RDS, DMS, CloudWatch, S3, Transfer Family, Secrets Manager).
• Monitoring & Performance: CloudWatch and other performance monitoring tools.
• Framework: Scrum (Jira, Jira Align).
• DevOps & CI/CD for Databases: Designed and implemented CI/CD pipelines using Azure DevOps repositories and GitHub Actions and Python, Bash, and PowerShell scripting, with secure deployments using GitHub Secrets, Terraform infrastructure deployment, and HAProxy for MS SQL Server. Designed, implemented, and operated a complete DataOps (Data DevOps) pipeline from scratch to automate ETL data migration from an on-premises PostgreSQL server to Google Cloud Platform BigQuery using CI/CD—experience with Liquibase and Flyway for database versioning.

Professional Experience

I have a solid database management and optimization foundation, with hands-on expertise in administering and improving performance for MariaDB, MySQL, PostgreSQL, and DynamoDB. I specialize in SQL performance tuning, data migration planning, and implementation with minimal downtime. My responsibilities have included:

• Designing and executing comprehensive data foundation and data migration plans across cloud and hybrid environments.
• Implementing cost-effective backup and disaster recovery strategies.
• Monitoring system performance and applying updates and patches to ensure database reliability.
• Ensuring data integrity through rigorous validation and quality assurance processes.
• Collaborating with cross-functional teams to define requirements and deliver database solutions aligned with business goals.
• Played a role in a major Bank Merging Project, executing seamless data migration ELT/ETL using AWS DMS and SQL scripting across AWS RDS, S3, Transfer family, and Secrets manager, delivering zero downtime, error-free results for banking and AI systems (AWS DMS, PostgreSQL, MS SQL).
• Played a role in a Camunda BPM ELT/ETL migration and data sync from a legacy database to optimized PostgreSQL for high-volume municipal datasets.
• Took initiative to reduce RDS and backup costs by up to 75%, and optimized SQL queries to reduce resource consumption by over 95%.
• Collaborated directly with product owners, not just DevOps teams, ensuring that databases served the needs of the business and data governance.
• Handled full lifecycle data migration, including initial bulk load and continuous sync between on-premise and cloud systems.

Key Achievements

• Manfred Project (Bank Merging): Involved critical database migration and integration efforts during a complex merger involving three banks. Used AWS DMS, pure SQL scripts, and multiple AWS services to ensure a seamless transition with zero data loss or system downtime, a career-defining achievement.
• Cost Optimization: Proposed and implemented changes that reduced AWS RDS and backup storage costs by approximately 75% across several accounts and databases.
• Query Optimization: Identified and refactored problematic queries, achieving up to 95% reduction in resource consumption and significantly improving backend application performance.
• Cross-Team Collaboration: Acted as a database consultant for backend teams, writing complex queries, advising on best practices, and supporting production changes in live environments.
• Database Design & Migration: Designed new database schemas for evolving project needs and successfully migrated databases between RDS engines with minimal impact.

Technical Skills

• Databases: MySQL, MariaDB, Oracle, MS SQL Server, Azure SQL Database
• High Availability & Clustering: SQL Server Always On, Failover Clustering, SQL Server Replication, Galera Cluster, ProxySQL
• Scripting & Languages: Python, PHP, Perl, Bash, PowerShell, JavaScript, HTML, CSS, REST APIs
• Infrastructure: Linux Server, Windows Server, Active Directory, Docker, VMWare, Data Center Operations, Networking, SAN
• Monitoring & Reporting: Elasticsearch, Kibana, Crystal Reports
• Tools & Platforms: Jira, Microsoft 365, WordPress, CMS
• VoIP & Telephony: Soft Switches, VoIP Traffic Systems, Monitoring Solutions

Work Methodologies & Tools

• Cloud Services: Azure Cloud, Microsoft 365 Power Automate
• Virtualization: Dockerized environments
• Cross-platform: Servers and systems administration (physical, virtual, cloud)

Professional Experience

With a robust background in database administration and IT infrastructure, I bring expertise in managing high-performance, high-availability systems across diverse platforms. I have led critical database operations, from performance optimization and clustering to large-scale data migrations and application development.

Key Responsibilities and Contributions

• Managed multi-tenant MySQL environments across telecom-grade infrastructure, supporting 24/7 VoIP services.
• Led the development of a centralized database platform, used by internal systems with varying performance and isolation requirements.
• Applied connection pooling and cost-efficient resource sharing techniques using ProxySQL, Galera cluster, HAProxy, and DB configuration tuning.
• Collaborated directly with system/application owners, not just DevOps teams, ensuring that databases served the needs of the business.
• Delivered disaster recovery plans and active failover strategies for MySQL, reducing risk while aligning with telecom SLA expectations.
• Designed and implemented comprehensive backup and disaster recovery strategies, minimizing risk and downtime.
• Led the development of in-house Sales & Marketing and Call Center database applications, saving time and resources for the business.
• Supported 24/7 VoIP infrastructure (4 Soft Switches, 6 monitoring and reporting databases), significantly improving call quality (ASR)(from 8% to 40%) by implementing ProxySQL and other performance solutions.
• Built and maintained Galera Clusters for MySQL, enabling zero data loss and maximum uptime.
• Migrated data from Oracle and MySQL to Azure SQL Server and onpromis MS SQL servers, including high availability setup with SQL Server Always On and failover clustering.
• Created NOC monitoring dashboards and reporting tools using Kibana.
• Optimized data warehouses and reduced query response times through tuning and structural improvements.
• Developed complex stored procedures and functions to enhance application functionality and reporting accuracy.
• Authored numerous automation and utility scripts in Python, Bash, and PowerShell to support DevOps and operational tasks.
• Leadership & Collaboration
• Experience conducting technical workshops and training sessions for an NOC team and leading a 16-person 24/7 database and infrastructure support team, fostering a collaborative and high-performance environment.

• Performed daily tasks associated with a production/development DBA role on a large-scale national commission system.
• Responsible for process scheduling/coordination/monitoring in a high dependency environment with 24*7 system availability and 99.9% uptime.
• Performed PostgreSQL development and testing to create a series of data-
• loading/transformation procedures.
• Responsible for timely issue resolution as part of the regular system
• sustainment.
• Performed database migration from SQL Server to Oracle.
• Install and administer the Windows and Linux servers on physical
• servers or virtual servers like VMware and Hyper-V.
• Generate daily processes report and technical documents.