Sivakumar Gandhirajan

Database Engineering Leader | Multi‑Cloud | HA/DR, Hybrid Governance, and AI‑enabled Data Platforms

★ Azure Database Administrator★ Google Cybersecurity Professional★ MongoDB Atlas Admin

Azure Admin AssociateAzure AI FundamentalsSnowPro Associate

Database Engineer

Modernized 30+ SQL servers/400+ DBs to SQL Server 2022; Always On AG, TDE, TLS 1.2+; >$70K/year savings.
Migrated a 5-node MariaDB Galera cluster to AWS RDS via Terraform; low-downtime cutover; ~$35K/year cost reduction.
Enabled hybrid governance with Azure Arc (ATP, Vulnerability Assessment, best-practice checks) across on‑prem DBs.
Architected Azure PostgreSQL Hyperscale (Citus) MPP for geospatial analytics; ARM-provisioned and tuned for bursty workloads.

A RAG platform using MongoDB vector indexes for semantic search and analytics.

Agentic workflow to assist home buyers with data-driven insights and decision support.

SQL Server modernization

HA/DRCost savings

30+ servers / 400+ DBs

Upgraded to SQL Server 2022 with Always On AG, TDE, TLS 1.2+; improved RTO/RPO and unlocked >$70K/year savings.

MariaDB to AWS RDS

IaCMigration

~$35K/year savings

Terraform-orchestrated migration from 5-node Galera to managed RDS; low-downtime cutover and automated operations.

Hybrid governance via Arc

GovernanceSecurity

ATP + VA enforced

Centralized Defender/ATP and Vulnerability Assessment across on-prem DBs with Azure Arc for secure posture.

Azure Postgres Hyperscale

AnalyticsPerformance

Geospatial MPP

Provisioned Citus for bursty analytics; ARM-based deployment and tuning for risk modeling workloads.