Daya Web Logo

Portfolio

Full-stack web applications built with modern technology

We specialize in building sophisticated, production-ready web applications that solve real business problems. Our expertise spans the entire development stack—from user-facing interfaces to backend APIs, databases, and cloud infrastructure. Below are examples of complex platforms we've architected and deployed.

My Favorite Bands

Full-Stack Music Discovery Platform

Project Overview

A comprehensive music discovery and concert tracking platform that helps users discover new artists, track upcoming concerts, and stay informed about the music they love. The platform combines concert discovery, personalized recommendations, music journalism, and email notifications into a cohesive user experience.

Technical Stack

Frontend

  • • Next.js 15 (React 19)
  • • TypeScript
  • • Material-UI (MUI) v6
  • • JWT + Google OAuth
  • • Google Analytics 4 (20+ events)

Backend

  • • FastAPI (Python 3.12)
  • • GraphQL (Ariadne)
  • • MongoDB 7.0 (363,793+ artists)
  • • SendGrid email integration
  • • Docker + Nginx + AWS Lightsail

Key Features

Artist Discovery & Concert Tracking

363,793 artist profiles with 9,273+ having upcoming events. Search, filter, and follow artists for personalized concert updates.

User Authentication & Profiles

Email/password and Google OAuth login with JWT sessions, avatar uploads, and follow/unfollow functionality.

Email Marketing System

Smart email capture with A/B testing framework, weekly digest emails, and personalized concert alerts via SendGrid.

Content Management

23+ published articles including city guides, discovery articles, tour previews, and anniversary features—all SEO-optimized.

Business Impact

  • • Production platform launched in 2025 with comprehensive concert database
  • • A/B testing framework for conversion optimization (email capture timing, CTA copy, modal design)
  • • User retention tracking with classification system (new → occasional → regular → loyal)
  • • Full SEO optimization with JSON-LD structured data and Open Graph metadata

MercuryList

Event Signup & Coordination Platform

Project Overview

A comprehensive event signup and coordination platform designed to streamline the organization of community events, volunteer activities, fundraisers, and group gatherings. The platform enables event organizers to create sign-up sheets with multiple time slots, track participant registrations, manage waitlists, and coordinate payments.

Technical Stack

Frontend

  • • Next.js 14 (App Router)
  • • TypeScript 5.3
  • • Material-UI v5
  • • React Hook Form
  • • Jest + React Testing Library

Backend & Mobile

  • • FastAPI 0.110 (Python 3.11)
  • • GraphQL (Ariadne)
  • • MongoDB 6 with async Motor driver
  • • React Native + Expo (iOS/Android)
  • • Docker + Nginx + Stripe Connect

Key Features

Event Management System

Multi-slot events with capacity management, waitlist support, QR code generation, and shareable token-based URLs (no login required for participants).

Multi-Role Authentication

JWT-based authentication with email verification, password reset, and secure session management. Event organizers and participants have distinct access levels.

Email Notification System

SendGrid integration with quota management (100/day, 20/hour per user). Automated verification, confirmation, invitation, and reminder emails.

Payment Integration

Stripe Connect for paid events with Express account onboarding, Checkout session creation, and payment status tracking. Supports Venmo, Zelle, PayPal.

Native Mobile Apps

React Native (iOS/Android) with QR code scanning, push notifications, biometric login, and offline event viewing. Ready for App Store/Play Store submission.

Business Impact

  • • Target market: Schools, PTAs, non-profits, sports teams, churches, corporate events
  • • Eliminates manual spreadsheets and email chains with centralized coordination
  • • Real-time capacity tracking with atomic MongoDB operations for concurrent signups
  • • Google Analytics 4 tracking for user growth, conversion rates, and viral coefficient

Our Technology Expertise

Frontend Development

  • • Next.js & React
  • • TypeScript
  • • Material-UI & Tailwind CSS
  • • React Native (iOS/Android)
  • • SEO & Performance Optimization

Backend Development

  • • FastAPI & Python
  • • GraphQL APIs
  • • RESTful APIs
  • • JWT Authentication
  • • Third-party Integrations

Infrastructure & DevOps

  • • MongoDB & SQL Databases
  • • Docker & Docker Compose
  • • AWS Cloud Services
  • • Nginx & SSL/TLS
  • • CI/CD Pipelines

Ready to Build Your Platform?

Let's discuss your project requirements and how we can help you build a modern, scalable web application.

Get In Touch