Software Engineering Projects

LazyChat

An AI-powered sales and customer engagement platform for Facebook, Instagram, and WhatsApp that automates conversations, answers product questions, captures orders, and helps businesses convert messages into sales.

  • Bootstrap 4
  • JavaScript
  • jQuery
  • AJAX
  • PHP
  • Laravel
  • MySQL
  • MongoDB
  • Instagram Graph API
  • Viber API
  • WhatsApp Cloud API
  • Gmail API
  • Twilio API
  • Stripe
  • Shopify Admin REST API
  • Shopify App Development
  • Redis
  • Unit Testing
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LazyChat

An AI-powered sales and customer engagement platform for Facebook, Instagram, and WhatsApp that automates conversations, answers product questions, captures orders, and helps businesses convert messages into sales.

Technologies

  • Bootstrap 4
  • JavaScript
  • jQuery
  • AJAX
  • PHP
  • Laravel
  • MySQL
  • MongoDB
  • Instagram Graph API
  • Viber API
  • WhatsApp Cloud API
  • Gmail API
  • Twilio API
  • Stripe
  • Shopify Admin REST API
  • Shopify App Development
  • Redis
  • Unit Testing

Impact & Key Contributions

  • Contributed across 15+ core product modules spanning chatbot automation, CRM, commerce, billing, delivery, user access, notifications, search, and analytics dashboards.
  • Delivered chatbot automation across 3 messaging platforms—WhatsApp, Instagram, and Viber—with FAQs, quick replies, commerce handlers, webhooks, interactive templates, attachments, and message persistence.
  • Built a custom Shopify application with two-way synchronization across 5 commerce domains: contacts, products, variants, inventory, and orders.
  • Built CRM capabilities for contacts, customers, segments, forms, custom fields, imports and exports, filtering, bulk operations, address management, and interaction history.
  • Expanded order, delivery, and billing operations with manual ordering, invoices, payments, bulk processing, delivery areas, weight-based shipping, and SurjoPay integration.
  • Integrated Gmail OAuth and multi-channel email, SMS, system, and push notifications, alongside user roles, access controls, dashboards, and global search.
  • Expanded automated unit and feature test coverage across 15 modules and authored documentation across 13 product and integration areas while improving performance through refactoring, queues, caching, and query optimization.
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LookupMed – Healthcare Management System

Led the technical delivery of a healthcare management platform, translating a high-level client concept into the product architecture, feature set, workflows, and interfaces for web, mobile, and WhatsApp experiences.

  • Bootstrap 5
  • JavaScript
  • jQuery
  • AJAX
  • PHP
  • Laravel
  • Laravel Sanctum
  • DomPDF
  • Laravel Breeze
  • MySQL
  • WhatsApp Cloud API
  • Redis
  • REST API
  • OCR API
  • OpenAI API
  • Gemini API

LookupMed – Healthcare Management System

Led the technical delivery of a healthcare management platform, translating a high-level client concept into the product architecture, feature set, workflows, and interfaces for web, mobile, and WhatsApp experiences.

Technologies

  • Bootstrap 5
  • JavaScript
  • jQuery
  • AJAX
  • PHP
  • Laravel
  • Laravel Sanctum
  • DomPDF
  • Laravel Breeze
  • MySQL
  • WhatsApp Cloud API
  • Redis
  • REST API
  • OCR API
  • OpenAI API
  • Gemini API

Leadership & Key Contributions

  • Owned full-stack development of the backend and web administration experience, covering authentication, profiles, medicines, generics, companies, prescriptions, schedules, consumption history, dashboards, and audit logs.
  • Designed a secure REST API ecosystem for the mobile application with focused response payloads, pagination, offline synchronization, device-token management, and clear Postman documentation.
  • Mentored the mobile developer through API integration, product workflows, data contracts, and implementation decisions to support consistent behavior across web and mobile.
  • Integrated the AI team's prescription-scanning APIs into validated processing workflows with authentication, rate limiting, request logging, prescription verification, and structured medicine scheduling.
  • Built WhatsApp bot journeys for registration, PIN verification, profile management, prescriptions, medicine pricing and alternatives, schedule updates, reminders, and history.
  • Implemented DGDA medicine database synchronization, import and export workflows, PDF prescriptions, email verification, WhatsApp notifications, and detailed medicine-change tracking.

Sentinel Markets Analytics

Platform: A subscription-based cryptocurrency intelligence platform with personalized onboarding, interactive market analytics, configurable exchange alerts, and role-aware administration.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • TanStack Query
  • PostgreSQL
  • Firebase
  • Stripe
  • Figma

Sentinel Markets Analytics

Platform: A subscription-based cryptocurrency intelligence platform with personalized onboarding, interactive market analytics, configurable exchange alerts, and role-aware administration.

Technologies

  • Next.js
  • TypeScript
  • Tailwind CSS
  • TanStack Query
  • PostgreSQL
  • Firebase
  • Stripe
  • Figma

Impact & Key Contributions

  • Built the end-to-end subscription journey, including plan comparison, dynamic pricing and crypto-asset packages, terms acceptance, purchase confirmation, customer subscriptions, and admin subscription management.
  • Developed a personalized onboarding experience with survey workflows, searchable multi-select asset controls, and primary and reference coin preferences shared across profiles and analytics.
  • Delivered responsive market intelligence interfaces for asset indexes, market impact, liquidity monitoring, and top metrics, with interactive date ranges, filters, legends, and contextual chart tooltips.
  • Created exchange-alert administration workflows with editable data tables, tag-based configuration, user assignment, API integration, and targeted query invalidation.
  • Strengthened authentication and authorization by improving Google login, signup verification, password recovery, route permissions, sidebar visibility, and forbidden-state handling.
  • Improved frontend maintainability by modularizing analytics routes, centralizing chart palettes, refining authentication and asset state management, and preventing unrelated data queries from refetching.
  • Translated Figma designs into responsive, production-ready interfaces and integrated Tawk.to live chat, legal-consent modals, loading states, and consistent light and dark theme behavior.

BMET

Led full-stack development (frontend and backend) of a multilingual Bangla learning platform for BMET, a Government of Bangladesh initiative, enabling scalable language learning for prospective workers.

  • Node.js
  • Express.js
  • TypeScript
  • PostgreSQL
  • Sequelize
  • Next.js
  • Tailwind CSS

BMET

Led full-stack development (frontend and backend) of a multilingual Bangla learning platform for BMET, a Government of Bangladesh initiative, enabling scalable language learning for prospective workers.

Technologies

  • Node.js
  • Express.js
  • TypeScript
  • PostgreSQL
  • Sequelize
  • Next.js
  • Tailwind CSS

Fitmate – Web Admin & Gym Panel

Developed core financial, booking, and administrative capabilities for Fitmate's web administration and gym management platform.

  • Material UI (MUI)
  • Node.js
  • Express.js
  • Sequelize ORM
  • MySQL
  • Mindbody API

Fitmate – Web Admin & Gym Panel

Developed core financial, booking, and administrative capabilities for Fitmate's web administration and gym management platform.

Technologies

  • Material UI (MUI)
  • Node.js
  • Express.js
  • Sequelize ORM
  • MySQL
  • Mindbody API

Impact & Key Contributions

  • Designed and implemented the wallet ecosystem, including point packages, system and user wallets, user and gym transaction histories, balance rollover, redemption, gym commissions, and access-cost calculations.
  • Built and optimized automated gym payouts, wallet disbursements, and invoicing workflows with refined pricing and revenue-sharing logic.
  • Developed class-session booking and cancellation workflows supporting the platform's Mindbody integration.
  • Implemented token-based admin authentication and secure user lifecycle operations, including account deletion.
  • Refactored centralized error-handling middleware and resolved critical UI and backend issues to improve platform stability, performance, and reliability.

PivotalConversations

Built and modernized backend automation for multi-platform social analytics, synchronizing accounts, content, monthly metrics, views, and transcriptions with Airtable.

  • Node.js
  • Express.js
  • Sequelize ORM
  • Zod
  • Supermetrics API
  • Airtable API
  • Airtable Scripting
  • Google Cloud Platform (GCP)

PivotalConversations

Built and modernized backend automation for multi-platform social analytics, synchronizing accounts, content, monthly metrics, views, and transcriptions with Airtable.

Technologies

  • Node.js
  • Express.js
  • Sequelize ORM
  • Zod
  • Supermetrics API
  • Airtable API
  • Airtable Scripting
  • Google Cloud Platform (GCP)

Impact & Key Contributions

  • Restored failing Airtable automations by diagnosing and fixing existing scripts, then replaced key workflows with scalable Node.js APIs deployed to Google Cloud Platform using a serverless architecture.
  • Developed account and content synchronization pipelines for Instagram, TikTok, YouTube, and LinkedIn through Supermetrics and Airtable integrations.
  • Automated monthly metrics and content-view collection with scheduled cron jobs, configurable execution times, manual triggers, and reliable Airtable persistence.
  • Implemented automated transcription generation across multiple social platforms, including scheduled processing and Airtable update workflows.
  • Improved integration maintainability by optimizing platform queries, consolidating shared Airtable configuration, adding permission checks, and introducing centralized execution logging.
  • Created and maintained a client-ready Postman collection covering the platform's API and manual automation triggers.

GiftallBD – Cross-Border E-commerce Platform

Modernized and stabilized core modules of a cross-border e-commerce platform spanning pricing, order operations, fulfillment, customer accounts, catalog management, and data exports.

  • PHP
  • Laravel
  • jQuery
  • MySQL
  • JavaScript
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GiftallBD – Cross-Border E-commerce Platform

Modernized and stabilized core modules of a cross-border e-commerce platform spanning pricing, order operations, fulfillment, customer accounts, catalog management, and data exports.

Technologies

  • PHP
  • Laravel
  • jQuery
  • MySQL
  • JavaScript

Impact & Key Contributions

  • Strengthened pricing accuracy by rebuilding discount calculations with amount limits, coupon controls, free-shipping rules, and currency-aware discount handling.
  • Expanded order and fulfillment operations with admin-assisted ordering, bulk quotation management, cancelled-order filtering, tracking notes, invoice fixes, and configurable shipping-area and delivery-date restrictions.
  • Improved platform security and account recovery with admin inactivity logout, spam-registration prevention, customer and admin password-reset fixes, email notifications, and clearer login failure messages.
  • Enhanced catalog discoverability and administration by correcting SEO metadata, category and subcategory publishing and filtering, menu relationships, product sorting, breadcrumbs, and mobile search.
  • Improved customer and contact export workflows, including file naming and memory-limit handling, and upgraded the application from Laravel 5.4 to 5.5.
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Aerobeds (formerly Aerolex)

Took ownership of an established OTA and ERP platform with limited technical handover, supporting continuity across its B2B hotel booking operations.

  • PHP
  • Laravel
  • JavaScript
  • Next.js
  • Material UI
  • MySQL
  • MongoDB
  • PayPal
  • DotWConnect API
  • SunHotels API
  • Ratehawk API
  • AWS

Aerobeds (formerly Aerolex)

Took ownership of an established OTA and ERP platform with limited technical handover, supporting continuity across its B2B hotel booking operations.

Technologies

  • PHP
  • Laravel
  • JavaScript
  • Next.js
  • Material UI
  • MySQL
  • MongoDB
  • PayPal
  • DotWConnect API
  • SunHotels API
  • Ratehawk API
  • AWS

Impact & Key Contributions

  • Independently mapped an unfamiliar codebase, build requirements, and runtime architecture to establish a reliable maintenance workflow.
  • Reverse-engineered and validated the existing zero-downtime deployment process, restoring the knowledge required to build and release the platform safely.
  • Investigated and resolved client-reported issues by tracing the platform's interconnected booking and ERP workflows.
  • Led the subsequent handover to the incoming engineer through codebase walkthroughs, deployment knowledge transfer, and ongoing technical guidance.

Multi-Client AMS

System: Enhanced a multi-client account management system with performance-critical reporting, inventory, billing, data export, and operational communication workflows.

  • PHP
  • Laravel
  • jQuery
  • MySQL
  • JavaScript

Multi-Client AMS

System: Enhanced a multi-client account management system with performance-critical reporting, inventory, billing, data export, and operational communication workflows.

Technologies

  • PHP
  • Laravel
  • jQuery
  • MySQL
  • JavaScript

Impact & Key Contributions

  • Re-engineered crash-prone reporting workflows by removing nested loops and repeated in-loop database queries, improving stability and performance for large datasets.
  • Refactored stock-value calculations to reduce processing overhead and improve performance as data volumes increased.
  • Built a client-specific consolidated item report and improved item, contact, and balance-sheet reporting with more reliable filtering and export capabilities.
  • Strengthened billing and inventory workflows by correcting invoice-number generation and adding quantities to invoices, challans, and purchase bills.
  • Resolved critical loading and data-integrity issues across primary sales, contact details, item reports, barcodes, and vendor-payment documents.
  • Integrated an SMS API for operational communication and enhanced LazyChat product synchronization.

ISCHOOL Institute CRM

Built a customer relationship management system for ISCHOOL Institute's executive programs, helping teams manage professional learners, track engagement, maintain lesson and student or alumni catalogs, and identify prospective participants.

  • JavaScript
  • Node.js
  • Express.js
  • Next.js
  • NextAuth.js
  • Zod
  • Sequelize ORM
  • MySQL
  • Google Cloud Platform (GCP)

ISCHOOL Institute CRM

Built a customer relationship management system for ISCHOOL Institute's executive programs, helping teams manage professional learners, track engagement, maintain lesson and student or alumni catalogs, and identify prospective participants.

Technologies

  • JavaScript
  • Node.js
  • Express.js
  • Next.js
  • NextAuth.js
  • Zod
  • Sequelize ORM
  • MySQL
  • Google Cloud Platform (GCP)

EzeeChat University Assistant

Developed a WhatsApp-based chatbot for the University of Toronto to support student inquiries and automate communication workflows using the WhatsApp Cloud API and LLM APIs. Built backend services for message handling, integrations, and structured data processing.

  • PHP
  • Laravel
  • MySQL
  • WhatsApp Cloud API
  • LLM APIs

EzeeChat University Assistant

Developed a WhatsApp-based chatbot for the University of Toronto to support student inquiries and automate communication workflows using the WhatsApp Cloud API and LLM APIs. Built backend services for message handling, integrations, and structured data processing.

Technologies

  • PHP
  • Laravel
  • MySQL
  • WhatsApp Cloud API
  • LLM APIs

Emkay

Developed a custom ERP and CRM solution that centralizes sales operations, work planning, project execution, and day-to-day business management.

  • PHP
  • Laravel
  • MySQL
  • Bootstrap 5
  • JavaScript
  • AJAX

Emkay

Developed a custom ERP and CRM solution that centralizes sales operations, work planning, project execution, and day-to-day business management.

Technologies

  • PHP
  • Laravel
  • MySQL
  • Bootstrap 5
  • JavaScript
  • AJAX

Key Contributions

  • Built lead, contact, and company management modules to organize customer relationships and sales opportunities.
  • Implemented yearly and monthly work planning with administrative task management to coordinate operational priorities.
  • Developed project and milestone tracking workflows supported by daily activity logs.
  • Created lead and sales reports to provide clearer visibility into pipeline activity and commercial performance.
  • Delivered operational dashboards that consolidate key sales, project, and work-plan information.

Fitmate Landing

Developed a responsive landing page by closely following Figma design specifications to ensure pixel-perfect UI and brand consistency. Focused on performance, accessibility, and responsiveness, delivering a modern and user-friendly interface that demonstrates strong frontend expertise.

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Figma
  • Vercel
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Fitmate Landing

Developed a responsive landing page by closely following Figma design specifications to ensure pixel-perfect UI and brand consistency. Focused on performance, accessibility, and responsiveness, delivering a modern and user-friendly interface that demonstrates strong frontend expertise.

Technologies

  • Next.js
  • TypeScript
  • Tailwind CSS
  • Figma
  • Vercel
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