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Ali
Polmeh

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Senior Database Administrator & BI Specialist
Hourly rate
$10/hr
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About me
Senior Database Administrator and BI Specialist with 4+ years of experience in designing, optimizing, and securing enterprise-grade relational and NoSQL databases. Proven track record in high-availability architectures (SQL Server Always On, Failover Clustering), complex T-SQL query performance tuning, index optimization, and zero-data-loss database migrations with minimal downtime. Expert in building data-driven Power BI dashboards, DAX modeling, CDC audit workflows, and API/web service integrations. Proficient in Python for process automation, data processing, and backend service development.

Work experience

Parsan Software Solutions
November 2022 – Current time
Job title
Senior Database & Web Services Specialist
Work experience & achievements
Executed mission-critical database migration and server upgrade for the Government Trading Corporation of Iran (GTC) with less than 30 minutes of operational downtime. Designed, deployed, and maintained SQL Server High Availability (Always On Availability Groups across Windows and Linux) and Failover Clusters ensuring near-zero RPO/RTO. Refactored complex T-SQL queries, restructured schemas, and optimized indexing (Columnstore, Non-Clustered) to resolve execution bottlenecks. Managed security, role-based access control (RBAC), and database hardening across SQL Server, Oracle, and MongoDB. Built interactive Power BI dashboards using Star Schema modeling and complex DAX measures for executive and operational tracking. Developed Change Data Capture (CDC) workflows with multi-year audit retention policies. Monitored and synchronized national-scale web services and API integrations.

Education

Islamic Azad University, Karaj Branch
Graduation year: 2025
Level of study
Bachelor
Major / Field of study
Bachelor of Science in Industrial Engineering

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