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Ngaberi Kongnyuy

@ngaberikongnyuy

Senior Database Administrator at Northwind Group who cut query execution time by 40% across production database workloads.

United States

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What I'm looking for

SENIOR DATABASE ADMINISTRATOR

At Northwind Group, I administered production database environments supporting multi-tenant SaaS applications, with a focus on SQL Server and PostgreSQL. I optimized queries, execution plans, indexes, and database configurations, reducing query execution time by 40%.

At Infosys, I led the migration of more than 25 on-premises databases to AWS RDS and Amazon Aurora using AWS DMS, contributing to infrastructure and licensing cost optimization. I also managed and optimized mission-critical PostgreSQL and SQL Server databases.

Earlier, I supported database migration and modernization work at USAA and spearheaded migrations to Amazon RDS at TxDOT. Across my roles, I’ve worked with Oracle, SQL Server, PostgreSQL, and MySQL, as well as automation and cloud database operations.

Experience

Work history, roles, and key accomplishments

Database Administrator III

Northwind Group

Aug 2025 - Jul 2026 (11 months)

Administered and supported high-volume production database environments for multi-tenant SaaS applications, focusing on Microsoft SQL Server and PostgreSQL. Optimized queries and automated lifecycle tasks, reducing query execution time by 40% and manual effort by 45%.

Microsoft SQL Server PostgreSQL Azure SQL Database azure monitor Cloudwatch PowerShell BASH Linux Query Optimization Performance Optimization Schema Management Tools DevOps

Senior Database Administrator / Consultant

Infosys

Oct 2024 - Jul 2025 (9 months)

Administered enterprise Oracle, SQL Server, PostgreSQL, MySQL, and MongoDB environments. Led migration of 25+ databases to AWS RDS and Aurora, optimizing costs by 20% and managing 50+ critical databases.

Oracle Microsoft SQL Server PostgreSQL MySQL MongoDB AWS DMS AWS RDS Amazon Aurora T SQL Pl SQL Database Security Performance Optimization Data Migration

Cloud Database Administrator

USAA

Aug 2021 - Sep 2024 (3 years 1 month)

Supported Sybase-to-Oracle conversion and banking database migration, focusing on data integrity and security. Coordinated migration lifecycle, performance tuning, and operational handover.

Sybase Oracle T SQL Pl SQL Data Migration Performance Optimization Database Security SQL Stored Procedures Migration Planning

Cloud Database Administrator

TxDOT

Nov 2019 - Jul 2021 (1 year 8 months)

Administered Oracle, SQL Server, PostgreSQL, MySQL, and AWS databases. Spearheaded migration of 50+ databases to Amazon RDS and designed high-availability solutions, improving resilience by 20% and efficiency by 40%.

Oracle Microsoft SQL Server PostgreSQL MySQL AWS RDS AWS DMS Sybase Always On Dataguard T SQL PowerShell High Availability Disaster Recovery

Cloud Database Administrator

Epsilon

Jan 2017 - Oct 2019 (2 years 9 months)

Administered production SQL Server and MySQL databases, improving query performance by 20% through tuning. Automated maintenance with Python and Ansible and designed multi-region AWS disaster recovery.

Microsoft SQL Server MySQL Performance Optimization Query Optimization Indexing Python Ansible AWS Disaster Recovery Jenkins Docker

Database Administrator / System Administrator

WWT (World Wide Technologies)

Jun 2014 - Mar 2017 (2 years 9 months)

Administered Oracle databases and supported migration to AWS. Tuned performance using AWR, ADDM, and execution plans, and performed Linux server administration.

Oracle AWR ADDM Execution Plans Performance Optimization AWS Linux BASH Splunk Database Migration Schema Administration

Scrum Master / Agile Coach

Uber

Aug 2013 - May 2014 (9 months)

Facilitated Agile/Scrum ceremonies and coached teams on Agile practices. Used Jira metrics to improve delivery efficiency and coordinated stakeholder communication.

Agile Scrum Jira Sprint Planning Team Velocity Stakeholder Management Change Management