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Karthik Kumar

@karthikkumar4

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Lead Database Engineer at Infinite Computer Solutions managing MongoDB and PostgreSQL databases in Chennai.

India

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At Infinite Computer Solutions, I manage MongoDB and PostgreSQL databases as a Lead Database Engineer.

At LTIMindtree, I designed and maintained PostgreSQL data models for ESG analytics and administered Azure PostgreSQL Flexible Server, including performance tuning and high availability setup. I also developed PostgreSQL functions, triggers, and stored procedures for ESG calculations.

Across my MongoDB DBA roles, I administered production environments, worked on replica sets and sharded clusters, and supported database upgrades, monitoring, backup and restore, and performance tuning. I hold ITIL V4 Foundation and Oracle Certified Associate – Oracle Database 11g Administration certifications.

Experience

Work history, roles, and key accomplishments

Current

Lead Database Engineer

Current

Infinite Computer Solutions

May 2026 - Present (5 months)

Lead Database Administrator managing MongoDB and PostgreSQL databases.

MongoDB PostgreSQL Database Administration

Senior Specialist – Data Engineering

LTIMindtree

May 2022 - May 2026 (4 years)

Designed and maintained scalable PostgreSQL data models for ESG analytics, administered Azure PostgreSQL, and developed complex functions and triggers. Managed MongoDB POC environments and supported 24x7 production.

PostgreSQL Azure Database For PostgreSQL MongoDB Performance Optimization High Availability Backup and Restore SQL Optimization Capacity Planning Database Security BASH ESG Data Modeling

Assistant Consultant – MongoDB DBA

Tata Consultancy Services

Feb 2021 - May 2022 (1 year 3 months)

Administered MongoDB production environments, monitored performance, resolved live issues, and managed backup, restore, and security configurations.

MongoDB Database Administration Performance Monitoring Backup and Restore Security

Senior Consultant – MongoDB DBA

Virtusa Consulting Services

Oct 2018 - Feb 2021 (2 years 4 months)

Executed MongoDB upgrades, implemented SSL certificate migration, integrated Atlas monitoring APIs, and developed automation scripts for data loading.

MongoDB Operations Manager SSL Atlas Automation BASH Performance Optimization

IT Analyst (Contract) – MongoDB DBA

Tata Consultancy Services

Feb 2018 - Sep 2018 (7 months)

Installed and configured MongoDB clusters, implemented replica sets and sharded clusters, and managed backup and restore operations.

MongoDB Replica Set Sharding Backup and Restore Capacity Planning

Tech Lead – MongoDB DBA

Cognizant Technology Solutions

Jul 2011 - Mar 2017 (5 years 8 months)

Managed high availability MongoDB clusters, performed performance tuning, designed disaster recovery plans, and provided 24x7 on-call production support.

MongoDB Replication Sharding Performance Optimization Disaster Recovery High Availability On call Support