John Varghese — Software Engineer

Since joining Diligent in June 2025, I’ve been leading several large-scale engineering initiatives across database modernization, AI-driven architecture, performance engineering, and cloud migration. My work spans end-to-end ownership of complex backend systems, with a strong focus on reliability, scalability, and AI-accelerated engineering.🚀 Key Areas of Ownership & Impact1. MySQL Modernization & Reliability EngineeringLed a full MySQL 5.7 → 8.0 upgrade program across multiple environments with zero customer impact. Designed compatibility frameworks, automated validation tooling, and conducted extensive performance, stress, and data-integrity testing. Delivered a seamless production cutover through detailed planning, coordination, and risk-managed execution.2. AI-Driven Data Architecture (AI Project)Designed next-gen microservice-aligned data models using Domain-Driven Design (DDD) principles. Built decomposed bounded contexts, normalized schema structures, and migration-friendly architecture. Leveraged AI tools to accelerate ERD design, schema prototyping, and SQL generation—reducing modelling and scripting time by ~50%.3. Performance Engineering & Query OptimizationIdentified key performance bottlenecks across mission-critical modules. Optimized SQL, indexing strategies, and data access patterns to significantly improve API response times and system throughput. Created performance roadmaps for storage optimization, index cleanup, and query-level tuning.4. Azure → AWS Migration ReadinessContributed to the cloud migration strategy by analysing configuration gaps, sizing requirements, data-migration approaches, and validation frameworks. Helped establish a strong technical foundation for cross-cloud transition.5. Backup, DR & Platform ResilienceCollaborated with platform teams to refine backup, PITR, and disaster recovery workflows. Recommended improvements in automation, retention, and validation processes to strengthen overall resilience.6. Growth, Innovation & AI AdoptionActively driving AI adoption inside the team through custom tooling, LLM-assisted workflows, AI-based log analysis POCs, and creating AI learning tracks. Contributing to internal engineering guilds, training programs, and hiring.

Stackforce AI infers this person is a SaaS Database Architect with expertise in cloud migration and AI-driven solutions.

Location: Bengaluru, Karnataka, India

Experience: 20 yrs 3 mos

Skills

Database Modernization
Ai-driven Architecture
Performance Engineering
Cloud Migration
Platform Resilience
Ai Adoption
Database Architecture
Database Migration

Career Highlights

Led MySQL upgrade with zero customer impact.
Designed AI-driven data models reducing modeling time by 50%.
Contributed to cloud migration strategy for cross-cloud transition.

Work Experience

Diligent

Senior Staff Database Engineer (9 mos)

Quantiphi

Senior Database Architect (11 mos)

DXC Technology

Database Architect (4 yrs 3 mos)

IBM

Delivery Operations and People Manager (Operation Support for Canada Sector) (1 yr 4 mos)

Senior Subject Matter Expert - SQL DBA (Operation Support) (2 yrs 8 mos)

Accenture

Associate Manager - MSSQL (Release and Build Deployment) (1 yr 2 mos)

Infosys

Technology Lead - MSSQL DBA (Operation Support) (3 yrs 2 mos)

Tech Mahindra

Technology Analyst - MSSQL DBA (Operation Support) (6 yrs)

Education

Bachelor of Technology (B.Tech.) at Cochin University of Science and Technology (CUSAT)

Postgraduate Program in Data Science & Machine Learning (PGPDM) at The University of Chicago Graham School

Master of Technology - MTech at Amal Jyothi College of Engineering Autonomous

John Varghese

Software Engineer

Bengaluru, Karnataka, India20 yrs 3 mos experience

Highly StableAI Enabled

Key Highlights

Led MySQL upgrade with zero customer impact.
Designed AI-driven data models reducing modeling time by 50%.
Contributed to cloud migration strategy for cross-cloud transition.

Stackforce AI infers this person is a SaaS Database Architect with expertise in cloud migration and AI-driven solutions.

Contact

Skills

Core Skills

Database ModernizationAi-driven ArchitecturePerformance EngineeringCloud MigrationPlatform ResilienceAi AdoptionDatabase ArchitectureDatabase Migration

Other Skills

AI toolsAgile MethodologiesAnalytical SkillsAutomationCloud SQLCross-functional Team LeadershipData MigrationDatabasesDistributed SystemsDomain-Driven DesignGoogle Cloud PlatformITILLean Six SigmaMicrosoft SQL ServerMySQL

About

Experience

Diligent

Senior Staff Database Engineer

Jun 2025 – Present · 9 mos · Bengaluru, Karnataka, India · On-site

In my current role, I lead large-scale database engineering, cloud modernization, and AI-driven architecture initiatives. I’ve delivered a seamless MySQL 5.7→8.0 upgrade across global environments, designed future-ready microservice data models using DDD, improved performance across high-traffic workloads, and contributed to Azure→AWS migration readiness. I also work extensively on backup/DR strategy, performance stabilization, and building AI-accelerated engineering workflows. Beyond delivery, I support team growth through training, architecture reviews, and internal tech initiatives while pursuing AWS certification and completing my M.Tech.

MySQLAI-driven architectureperformance engineeringcloud migrationreliability engineeringDatabase Modernization+1

Quantiphi

Senior Database Architect

Jun 2024 – May 2025 · 11 mos · Bengaluru, Karnataka, India · Hybrid

Worked as a Database Architect for On Premise or Cross Cloud Modernization to Google Cloud - Cloud SQL(SQL Server, PostgreSQL, MySQL), AlloyDB, SpannerDB and other tools like DMS, Ispirer, Striim etc.

Database ArchitectureGoogle Cloud PlatformCloud SQLPostgreSQLMySQL

Dxc technology

Database Architect

Mar 2020 – Jun 2024 · 4 yrs 3 mos · Bengaluru, Karnataka, India

Currently working in large database migration deals and assist in the following phases as a database architect
1. Discovery
2. Assessment - App, DB and BI
3. Design
4. Solutioning
5. Effort Estimation
6. Cost Benefit Analysis
7. Implementation
8. Transition
Database Migration Experience for the following patterns:
1. MSSQL on Premise to MSSQL On Premise or AWS RDS MSSQL or AWS RDS PostgreSQL or Azure
2. Oracle on Premise to AWS RDS Oracle or AWS RDS Mariadb or SQL Server or Postgresql
3. DB2 to MSSQL
Hands on experience in Automation with PowerShell and Transact-SQL. I also lead automation and transformation Projects for Build, Upgrades, Migrations and Decommission Projects.
Apart from all this, I am an active member of DXC hackathon initiative, AI/ML activities, white paper, technical papers, blueprints, external partner connect, build start up ecosystem, mentoring, internal and external training, innovation hub and success stories

Database MigrationAutomationPowerShellTransact-SQL

Ibm

2 roles

Delivery Operations and People Manager (Operation Support for Canada Sector)

Nov 2018 – Mar 2020 · 1 yr 4 mos

In charge of Technical delivery for Database and Middleware Technologies supporting multiple client accounts spread across Canada. This roles also includes People Management for my direct reports.

Senior Subject Matter Expert - SQL DBA (Operation Support)

Feb 2016 – Oct 2018 · 2 yrs 8 mos

Technical Subject Matter Expert in SQL Server and Supporting 14 Different Client Accounts.

Accenture

Associate Manager - MSSQL (Release and Build Deployment)

Nov 2014 – Jan 2016 · 1 yr 2 mos · Greater Hyderabad Area

Prepare and help Global Team technically and functionally for executing all project functions for timely project and release deliverables to support all existing and future Microsoft Products.

Infosys

Technology Lead - MSSQL DBA (Operation Support)

Aug 2011 – Oct 2014 · 3 yrs 2 mos · Redmond, Washington, United States

Functioned in multiple roles as a Senior SQL Database Engineer, Service Engineer , Database Architect and Technical PM during my tenure with Infosys at Microsoft Client Office, Redmond, WA

Tech mahindra

Technology Analyst - MSSQL DBA (Operation Support)

Aug 2005 – Aug 2011 · 6 yrs · Redmond, Washington, United States

Functioned in multiple roles as an Oracle Developer, Sybase Database Admin and SQL Server Database Administrator during the course of my tenure with the company. Worked for 3 years in India Offshore and 3 years in Onsite with multiple clients like General Electric, Applied Materials and Microsoft.