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naresh Kumar

@nareshkumar6

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Senior Database Administrator specializing in PostgreSQL, Oracle, AWS migrations, and performance tuning.

India

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What I'm looking for

I seek senior database roles focused on PostgreSQL/Oracle administration, cloud migrations (AWS), performance tuning, and team leadership within collaborative, outcome-driven teams.

I am an IT professional with 14+ years of experience in PostgreSQL and Oracle database administration, focused on architecture, migration and performance tuning.

I have implemented on-premise and AWS solutions (RDS, Aurora, EC2) and executed Oracle-to-PostgreSQL migrations using ORA2PG, AWS SCT and AWS DMS.

My work includes designing backup and recovery strategies (PITR), replication and high-availability setups, partitioning large tables, and tuning queries to improve response times—reducing MySQL query response times by up to 70% and restoring critical systems with RPO < 5 minutes.

I support application teams with data modeling, ER diagrams, SQL object development, ITIL incident/problem processes, and provide technical recommendations and standards to improve reliability and performance.

Experience

Work history, roles, and key accomplishments

Senior Database Developer

Tech Mahindra

Oct 2021 - Nov 2024 (3 years 1 month)

Implemented migrations and performance tuning across PostgreSQL, Oracle and MySQL, reducing query response times by up to 70% and achieving RPO <5 minutes during recovery incidents.

PostgreSQL Oracle MySQL AWS RDS Query Optimization Replication Shell Scripting Ora2pg

Team Lead

Centre for Development of Advanced Computing

Oct 2011 - Oct 2021 (10 years)

Led database architecture and migrations to AWS RDS for PostgreSQL and Oracle, implemented backup/PITR strategies and table partitioning for million-row tables to improve scalability.

PostgreSQL Oracle Data Modeling AWS RDS Partitioning PgBadger Performance Tuning Shell Scripting

Software Engineer

TekOptimize Software India Pvt Ltd.

Jan 2011 - Oct 2011 (9 months)

Developed and maintained database schemas, stored procedures and performed performance tuning and backups for PostgreSQL and MySQL, resolving production issues and improving reliability.