Current Position
PHP Developer
Techizer Tech Solution Pvt. Ltd. • Mumbai, India
March 2025 – Present
8+ Production Projects Successfully Delivered
Engineered and shipped enterprise web applications, healthcare PSP workflows, and compliance reporting systems.
Core Responsibilities & Achievements:
- Built complete Patient Support Program (PSP) backend modules for pharmaceutical leaders including Sun Pharma, Alkem Laboratories, and Cipla.
- Designed and implemented patient enrollment, doctor mapping, therapy adherence tracking, and field force reporting dashboards.
- Integrated secure third-party RESTful APIs for real-time patient validation and drug dispensation workflows.
- Managed live cloud deployment on AWS EC2 servers, configured Linux environments, and resolved high-traffic database bottlenecks.
- Engineered residential society ERP applications using Laravel 12, Tailwind CSS, and Alpine.js.
CodeIgniter 3 (HMVC)
Laravel 12
MySQL
AWS EC2
REST APIs
Sun Pharma PSP
Career Milestone
PHP Developer
ITD Services Pvt. Ltd. • Sakinaka, Andheri, Mumbai
April 2023 – October 2024
Courier Logistics & Automated TCPDF Invoice Architecture
Built high-efficiency logistics billing systems and normalized high-volume courier shipment database schemas.
Core Responsibilities & Achievements:
- Developed and maintained web application modules using PHP and CodeIgniter 3 (HMVC architecture).
- Designed and optimized MySQL database schemas and queries, improving overall application performance.
- Built a modular courier billing and tracking system - implemented tracking API integration and automated invoice generation using TCPDF.
- Designed admin dashboards and reporting features for logistics operations.
CodeIgniter 3
PHP
MySQL
TCPDF
Tracking APIs
Git
AJAX
Career Milestone
PHP Developer Intern
ITD Services Pvt. Ltd. • Sakinaka, Andheri, Mumbai
October 2022 – March 2023 (6 Months)
Production Foundation in PHP, CodeIgniter & MySQL
Hands-on training in MVC architecture, database querying, bug fixing, and client-server REST communication.
Core Responsibilities & Achievements:
- Assisted senior developers in backend feature development using PHP, CodeIgniter, and MySQL.
- Supported testing, bug fixing, and debugging of production workflows.
- Implemented AJAX-driven frontend data updates and form validation.
Core PHP
CodeIgniter
MySQL
HTML5/CSS3
JavaScript
jQuery
Interested in Hiring Vishal Singh for Your Team?
Let's discuss how my backend engineering background can benefit your upcoming software initiatives.