Sudhir Kumar Tiwari
Database Consultant
New Delhi
Summary
Results-driven Database Administrator with over 16 years of experience in SQL Server (2000–2019), Azure SQL, and PostgreSQL, specializing in performance tuning and cloud migrations. Expertise includes high availability configurations such as Always On and Clustering, along with comprehensive disaster recovery planning. Currently serving as a Consultant at HCL Technologies, delivering secure, scalable, high-performance database solutions. Proficient in utilizing tools such as Red Gate, SSMS, PRTG, and PowerShell to automate routine tasks, enhance server uptime, and ensure business continuity.
Overview
17
17
years of professional experience
3
3
Certifications
1
1
Language
Work History
Consultant – Senior SQL DBA
HCL Technologies
01.2022 - Current
- Spearheaded SQL data migrations (On-prem to Azure) for enterprise workloads.
- Provisioned and configured SQL Servers across DEV/UAT/PROD/DR environments.
- Collaborated with app/dev teams to analyze and optimize slow-running queries.
- Managed 30+ PostgreSQL servers including DEV/UAT\PROD.
- Designed and implemented high-availability architecture using streaming replication.
- Automated daily health checks, backups, and alerting using Bash and Azure Monitor.
- Tuned long-running queries and improved DB performance by 40%.
- Executed major upgrades from PostgreSQL 11 to 16.
- Supported application teams with query optimization and schema design.
- Ensured data security using SSL, role-based access, and encryption (BYOK on Azure).
- Performed regular VACUUM, ANALYZE, and auto vacuum tuning to reclaim storage and optimize query performance.
Senior SQL DBA
HH Global Print Management
10.2015 - 12.2021
- Managed 1,000+ SQL instances including Azure SQL Managed Instances.
- Performed patching, performance audits, storage planning, and uptime optimization.
- Migrated SQL 2014 databases to Azure and configured DR with geo-replication.
SQL DBA
Infocube Solutions Pvt Ltd (Project: JCB India)
06.2012 - 10.2015
- Installed, configured SQL Server 2008R2/2012 with HA clusters.
- Monitored I/O bottlenecks, fragmentation issues, and job performance.
- Automated scheduled maintenance, alerts, and error logging.
SQL DBA
R.M. InfoTech Pvt Ltd
01.2009 - 05.2012
- Migrated and upgraded databases from SQL 2005 to 2008.
- Enhanced performance using index tuning, query optimization, and page defragmentation.
- Created backup/restore strategies, implemented log shipping.
Education
MCA – Master of Computer Application -
IGNOU
New Delhi01-2009
Bachelor of Computer Applications - Computer Science
IGNOU
New Delhi01-2006
Skills
Database Platforms: Azure SQL DB\MI, PostgreSQL, SQL Server (2000–2019)
Performance Optimization: Query tuning, Indexing, Execution plans, DMVs
High Availability: Always On, Failover, Replication, Clustering, Backups
Cloud: Microsoft Azure (MI, SQL DB), Azure PostgreSQL Flexible Server, GCP basics
Problem-solving
Collaborative teamwork
Certification
Google Cloud Certified – Associate Cloud Engineer
Interests
Books, Cricket, Tech
Timeline
Consultant – Senior SQL DBA
HCL Technologies
01.2022 - Current
Senior SQL DBA
HH Global Print Management
10.2015 - 12.2021
SQL DBA
Infocube Solutions Pvt Ltd (Project: JCB India)
06.2012 - 10.2015
SQL DBA
R.M. InfoTech Pvt Ltd
01.2009 - 05.2012
MCA – Master of Computer Application -
IGNOU
Bachelor of Computer Applications - Computer Science
IGNOU