Senior Drupal & PHP Developer with 11+ years

Kowsalya Veerachamy

Senior Solution Engineer PHP & Drupal

E-Mail: ******************@*****.***

Mobile: +91-994*******

Madurai, Tamil Nadu

PROFESSIONAL SUMMARY

Senior Solution Engineer with 11+ years of enterprise CMS and web application experience, specializing in Drupal 8/9/10/11, Laravel, CodeIgniter, and PHP-based MVC frameworks. Proven track record delivering high-availability, large-scale platforms for global enterprise clients with zero client downtime. Experienced in Salesforce & HubSpot CRM integrations, Apache Solr search, SAML2/SSO authentication, multisite/multilingual Drupal architectures, and Acquia Cloud hosting. Tech Lead and award-winning engineer committed to engineering excellence, security, scalability, and best practices. Leveraging AI coding assistants to enhance development productivity and code quality. TECHNICAL SKILLS

Languages PHP 7.x / 8.x, JavaScript (ES6+), TypeScript (learning) CMS Platforms Drupal 8/9/10/11, WordPress, Joomla

PHP Frameworks Laravel 8/11/12, CodeIgniter, Symfony Components Frontend React.js (learning), jQuery, HTML5, CSS3, Ajax, Bootstrap Databases MySQL, MariaDB, PostgreSQL, Stored Procedures, Query Optimization Search Apache Solr, Drupal Search API

CRM & Auth Salesforce CRM REST API integration, HubSpot, SAML2, JWT, SSO Testing PHPUnit, Unit Testing, Integration Testing, Behat Testing DevOps & Cloud AWS (EC2, S3), Acquia Cloud, Docker, Docker Compose, GitLab CI/CD, GitHub, Bitbucket

Performance New Relic, CDN, Caching, Lazy Loading, Performance Profiling Debugging Chrome DevTools, Network Debugging, DOM Inspection Project Tools Jira, Confluence, Drush, Composer

OS / Env Linux (Ubuntu), Windows

IDE

AI Tools

VS Code, Eclipse, Sublime Text

Claude, ChatGPT, GitHub Copilot (code assistance & productivity) PROFESSIONAL EXPERIENCE

Senior Solution Engineer Rappit January 2023 – Present Coimbatore

● Architected and maintained high-traffic multilingual, multisite Drupal 9/10/11 websites on Acquia Cloud for enterprise clients including Solvay and Syensqo, integrating CDN and New Relic APM to achieve zero client downtime across global deployments.

● Led strategic Drupal version upgrades from 9 10 11, managing full migration lifecycle including module compatibility, database schema updates, and configuration management.

● Integrated Salesforce and HubSpot CRM platforms via REST APIs for data mapping, lead management, and third-party system synchronization.

● Implemented SAML2-based Single Sign-On (SSO) authentication, migrating from Google to Microsoft identity provider along with Sharepoint Integration with zero downtime.

● Configured and managed Apache Solr search indexing for enterprise Drupal platforms, improving content discoverability and search performance.

● Managed Drupal configuration management workflows across development, staging, and production environments ensuring consistent deployments.

● Refactored legacy PHP codebases into modular, service-oriented architecture following SOLID principles and Repository design patterns.

● Wrote PHPUnit unit tests and maintained technical documentation for custom modules and API integrations.

● Collaborated in agile sprints with daily scrum, Jira ticket management, cross-team collaboration, and proactive monitoring.

Senior Drupal Developer BICSGLOBAL May 2020 – December 2022 Chennai

● Maintained and enhanced multisite Drupal platform for JNJ Institute — a global Johnson & Johnson medical education platform serving US and international Healthcare and Non-Healthcare professionals across online courses, eModules, and events management.

● Managed high-performance custom Laravel web application on AWS for an education system handling student enrollment, course management, and faculty administration.

● Optimized complex MySQL queries using EXPLAIN plans, advanced indexing strategies, resolved N+1 query issues, and wrote atomic stored procedures for high-volume data operations.

● Awarded Best Innovation & Best Revenue Project (Drupal) for outstanding technical leadership, major platform upgrades, and workflow optimization as Team Tech Lead. Senior PHP Developer Vaya Life Private Limited February 2019 – January 2020 Chennai

● Built scalable backend services and real-time features using Node.js and Express.js for the https://vaya.in/ platform, improving application responsiveness and UI performance.

● Developed a Stock & Revenue Management System using the CodeIgniter PHP framework, automating manual inventory tracking and streamlining warehouse operations, sales offers, and coupon management.

● Optimized database queries and enhanced application performance for high-traffic financial services platforms.

Software Engineer OVI Hosting Private Limited October 2014 – October 2018 Bangalore

● Developed and maintained 10+ client websites using PHP, HTML5, JavaScript, jQuery, and CSS including hostingraja.in and webshosting.review.

● Built and customized WordPress websites including theme customization, plugin development, and content management for client projects (2 years WordPress experience) https://www.hostingraja.in/ & https://www.webshosting.review/

● Architected and implemented an E-Commerce project using Joomla, PHP, jQuery, and JavaScript. PROJECT PROFILE

Solvay & Syensqo — European Multinational Chemical Company https://www.solvay.com/en/ https://www.syensqo.com/en/ Description: European multinational chemical giants — managing multilingual content, Acquia Cloud hosting, global release governance, SAML2 SSO migration, Salesforce/HubSpot CRM integration, Apache Solr search, and strategic platform split into two independent systems with zero downtime. Technologies: Drupal 9/10/11, MariaDB, Custom Modules, Acquia Cloud, CDN, Solr, Salesforce CRM REST API integration, HubSpot, SAML2, REST APIs

Role: Senior Solution Engineer Team Size: 6

JNJ Institute — Global Medical Education and Training Platform https://jnjinstitute.com/en-in

Description: Global Johnson & Johnson medical education and professional training platform supporting online courses, eModules, events management for Healthcare and Non-Healthcare professionals across US and international markets.

Technologies: Drupal 8/9, MySQL, Custom Modules and Plugins, Acquia Cloud, REST APIs, Web Technologies

Role: Senior PHP Developer Team Size: 8

Laravel Education Management System

Description: High-performance custom web application for education system handling student enrollment, course management, faculty administration, and academic workflows. Technologies: Laravel PHP Framework, PostgreSQL, AWS, REST APIs, jQuery, HTML/CSS Role: Senior PHP Developer

JEXTN Project Management CRM

Description: Custom CRM tool to manage project information including client details, team members, task management, and workflow tracking built on Joomla/PHP. Technologies: Joomla, PHP, MySQL, jQuery, HTML/CSS Role: Senior Developer

ACADEMIC QUALIFICATIONS

B.E. (Computer Science & Engineering)

KLN College of Information Technology 80%

Higher Secondary (State Board) — 83.3% Secondary (State Board) — 90% Nirmala Girls Higher Secondary School

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