Sadiq Ali A
Chennai
Summary
Experienced DBA Lead with 14 years managing enterprise database environments in SQL Server, Oracle, PostgreSQL, MySQL, and MongoDB across on-premises and cloud platforms. Expertise in high availability, disaster recovery, cloud migrations, performance tuning, and automation. Skilled in leading database operations and implementing scalable architectures to ensure business continuity through effective backup, replication, and monitoring strategies.
Overview
15
15
years of professional experience
Work History
DBA Lead
Medexpert
09.2025 - Current
- Lead database administration operations across AWS environments, ensuring high availability, security, and optimal performance.
- Implement SSL encryption across all AWS accounts to enhance database security compliance.
- Managed database migrations involving Aurora and MySQL, achieving minimal downtime and ensuring seamless transitions for end-users.
- Perform SQL code reviews following best practices to ensure performance, scalability, and maintainability.
- Deploy database changes using Liquibase as part of CI/CD processes.
- Execute database refresh processes using Jenkins to improve operational efficiency.
- Resolve complex deadlock issues across multiple database platforms, improving application stability.
- Optimized performance bottlenecks through query tuning and configuration improvements, enhancing overall database efficiency.
- Maintained technical documentation in Confluence for knowledge sharing and operational continuity, streamlining team processes.
- Lead and mentor the DBA team, overseeing daily operations and ensuring SLA adherence.
DBA
NEC Asia pacific
Singapore
09.2023 - 09.2025
- Installing configuring, managing, monitoring and troubleshooting Sql Clustering, Transaction log Shipping and Alwayson.
- Configured AlwaysON for 2 node cluster in AWS EC2 instances.
- Handling of daily issues (Blockings, Long running transaction, Deadlocks etc.).
- Automating SQL Services Support and HA alerting, using Powershell.
- Troubleshoot issues related to Tempdb and Transaction Log.
- Handling Change request, Incident and service request in SNOW.
- Implementing backup plans and testing the recovery scenarios.
- Worked on oracle database patching.
- Installation and configuration of PostgreSQL in on-premise, Azure VM/Single Server/Flexible sever, AWS EC2/RDS-PostgreSQL, Aurora PostgreSQL.
- Monitoring database performance to identify slowdowns or potential issues Supporting operational tasks in Sybase.
- Handling Government Projects over 15 Agencies.
Database Consultant
Optimum Solutions
Singapore
01.2023 - 08.2023
- Provided production and on-call support for SQL Server database maintenance for over 200 servers.
- Installed SQL Server versions 2012, 2016, 2017, 2019 across multiple environments.
- Working on Database Migration from Sql 2012 to 2019.
- Automating SQL Server tasks using Powershell.
- Performed backup and restoration of databases using TDP backup tool to ensure data integrity and availability.
- Tune queries and indexes using EXPLAIN/ANALYZE in PostgreSql.
- Managed change requests, incidents, and service requests in SNOW to maintain operational continuity.
Database Engineer
Likewize
10.2020 - 01.2023
- Production support as well as on-call support for SQL server database maintenance for over 600 servers.
- Resolved daily database issues including blockings, long-running transactions, and deadlocks.
- Working on Database Migration from Sql 2012 to 2019.
- Migrating the on-premises Sql server to Azure cloud using DMA (Data Migration Assistant) tool.
- Executed database migration via S3 bucket to AWS RDS instance, ensuring minimal downtime.
- Migrated table data from Oracle to SQL Server using AWS DMS job.
- Troubleshot data synchronization issues by reloading table data through DMS job.
- Migrating the SSAS database and process the cubes.
- Automating SQL Server tasks using Powershell.
- Deployed the SSIS package based on user specifications.
- Troubleshoot issues related to Tempdb and Transaction Log.
- Configure replication from one region to another region in Azure.
- Maintain and configure MongoDB databases.
- Working knowledge in Performance tuning.
Associate Consultant
HCL Technologies
01.2019 - 10.2020
- Perform assessment and migration of databases to Azure using DMS, Azure Migrate.
- Configure and implement HADR as per client requirements.
- Executed weekly consistency checks and index maintenance on infrastructure servers, reclaiming disk space upon alerts.
- Scheduling and monitoring the SQL server Jobs.
- Apply Patching in both standalone and clustered server.
- Managed user permissions to enhance security and access control based on specific requests.
- Conducted backups and restorations to ensure data integrity and availability per customer requests.
Senior Administrator
Wipro Technologies
08.2017 - 01.2019
- Developed, tested, implemented, and administered databases, optimizing SQL queries and stored procedures for enhanced performance.
- Monitored database environment proactively, tuning AlwaysOn replication for stability, performance, availability, and network optimization.
- Supported installation and configuration of SQL Server versions (2017, 2016, 2019, 2005, 2008, 2012) including Database Engine, Integration Services, Reporting Services, and Analysis Services.
Database Administrator
Sify Technologies
07.2016 - 08.2017
- Administered SQL Server high availability and disaster recovery strategies to ensure minimal downtime and data integrity.
- Implemented SQL Server replication, log shipping, mirroring, AlwaysOn, clustering, and backup-recovery to enhance data availability.
- Detected and troubleshot SQL Server related CPU, memory, IO, disk space, and resource contention to maintain optimal database performance.
- Work closely with the Application Architecture Development teams to ensure the consistency and integrity of database development.
- Work on multiple DR tests including third party DR test and native DR technologies. 24 X 7- production database on Call Support.
Database Administrator
AGS Health
02.2014 - 07.2016
- Enabled TDE for enhanced database security.
- Troubleshot log file space issues to ensure database performance.
- Performed weekly consistency checks and index maintenance to maintain infra server efficiency.
- Deployed the report in SSRS based on user requests.
- Gained experience managing Internet Information Services (IIS) administration.
- Applying Service packs.
Officer IT
Equitas Microfinance
10.2010 - 03.2013
- Executed change requests in production environment to ensure system integrity and minimize downtime.
- Configured linked servers to connect various data sources.
- Managed importing-exporting packages and installed integration services to streamline data flow between systems.
- SQL Server hardening and Database Mail configuration.
- Configuring Log Shipping for DR environments.
Skills
- Database Administration
- Cloud Database Management
- Database Migration
- Database upgrades
- Backup strategy
- Disaster recovery
- Query optimization
- Monitoring & Health Checks
- Automation & Scripting
- SSIS Administration
- SSRS Administration
- SSAS Administration
- Change management
- Security & User Access Management
- Root cause analysis
Technical Certifications
- Azure Administrator
- AWS Certified Solutions Architect
- Microsoft SQL Server Administrator
Languages
- Tamil
- English
Academic Qualification
Bachelor of Information Technology
Personal Information
- Father's Name: A. Abdul Nazeeb
- Date of Birth: 03/03/83
- Nationality: Indian
- Marital Status: Married
Timeline
DBA Lead
Medexpert
09.2025 - Current
DBA
NEC Asia pacific
09.2023 - 09.2025
Database Consultant
Optimum Solutions
01.2023 - 08.2023
Database Engineer
Likewize
10.2020 - 01.2023
Associate Consultant
HCL Technologies
01.2019 - 10.2020
Senior Administrator
Wipro Technologies
08.2017 - 01.2019
Database Administrator
Sify Technologies
07.2016 - 08.2017
Database Administrator
AGS Health
02.2014 - 07.2016
Officer IT
Equitas Microfinance
10.2010 - 03.2013