ML Challenge - Project Recap

Overview

A modern Next.js e-commerce Product Detail Page (PDP) implementation showcasing production-ready patterns, comprehensive testing, and accessibility-first design.

Key Features & Architecture

Core Stack & Decisions

• Next.js 15 App Router with React 19, TypeScript, and Tailwind CSS 4 for modern web development
• React Server Components (RSC) with selective client hydration for optimal performance and SEO
• Zod Schema Validation ensuring runtime type safety across all API boundaries and data contracts

API & Data Layer

• RESTful API Routes - GET /api/products (list with pagination/search) and /api/products/[id] (detail)
• Structured Error Handling - Consistent error envelope pattern with proper HTTP status codes
• Input/Output Validation - All API requests and responses validated against Zod schemas

Testing & Quality Assurance

• ≥80% Code Coverage enforced across unit, integration, and E2E test suites
• Vitest for fast unit testing with jsdom environment and coverage reporting
• Playwright E2E Tests covering complete user workflows, error states, and responsive design

Accessibility & Performance

• WCAG Compliance - Semantic HTML, proper ARIA attributes, keyboard navigation support
• Screen Reader Optimization - Comprehensive alt text, landmarks, and focus management
• Performance Optimized - Next.js Image component, lazy loading, efficient bundle splitting
• Responsive Design - Mobile-first approach with desktop enhancements

Development Experience

• TypeScript with strict configuration and auto-generated API types
• ESLint + Prettier for consistent code formatting and quality
• pnpm package management for efficient dependency handling
• Comprehensive Documentation - API contracts, decisions rationale, and runbook

About Me - Cover Letter

As a Senior Frontend Engineer with extensive experience in modern web technologies, I bring a unique combination of technical depth and architectural vision to complex e-commerce challenges. My proven track record in delivering scalable, accessible, and high-performance web applications aligns perfectly with the demands of this marketplace platform.

Why I'm a Strong Fit

Technical Excellence & Modern Stack Expertise

• React & Next.js Mastery - Deep experience with App Router, Server Components, and performance optimization patterns demonstrated in this PLP implementation
• TypeScript & Type Safety - Strong advocate for type-driven development, evident in the comprehensive Zod validation and API contract design
• Testing & Quality - Committed to maintainable code with comprehensive test coverage (≥80%) across unit, integration, and E2E testing suites

Accessibility & User Experience Focus

• WCAG Compliance - Proven experience implementing inclusive design patterns with semantic HTML, ARIA attributes, and keyboard navigation
• Performance Optimization - Expertise in Core Web Vitals, lazy loading, and efficient rendering strategies for optimal user experience
• Mobile-First Development - Strong responsive design skills ensuring seamless experiences across all device types

Architecture & Scalability

• API Design - Experience building robust, well-documented APIs with proper error handling and validation patterns
• Component Architecture - Skilled in creating reusable, maintainable component libraries with clear separation of concerns
• Development Experience - Focus on developer productivity through tooling, documentation, and clear architectural decisions

This project showcases my ability to balance technical excellence with practical delivery, creating production-ready solutions that prioritize both user experience and developer maintainability.