gitGood.dev
Technical Interview Prep Platform - Built, Deployed, and Monetized
Project Overview
gitGood.dev is a production SaaS platform designed to help developers prepare for technical interviews at FAANG companies and top tech startups. The platform features hundreds of practice questions across multiple domains including System Design, Algorithms, Databases, Cloud Computing, and Behavioral interviews.
This is a fully deployed, monetized product with real users, payment processing, and scalable cloud infrastructure. Built from the ground up using modern web technologies and AWS services, demonstrating end-to-end product development from conception to production deployment.
Key Features
- Comprehensive Question Bank: Hundreds of practice questions covering System Design, Algorithms, Data Structures, Databases, Networking, Operating Systems, OOP, Cloud (AWS), DevOps, Kubernetes, and Behavioral topics
- User Authentication: Secure user management with AWS Amplify and Cognito
- Payment Processing: Stripe integration for subscription management ($5/month premium)
- Progress Tracking: Skill badges, streak tracking, and personal progress dashboards
- Leaderboard System: Competitive rankings to motivate consistent practice
- Interview Questions Database: Curated behavioral interview questions with sample answers
- Responsive Design: Optimized for desktop and mobile devices
Technologies Used
Platform Screenshot
gitGood.dev homepage featuring the clean, modern interface with practice questions across System Design, Algorithms, Databases, Cloud Computing, and more. The platform showcases company logos from top tech firms including Amazon, Google, Meta, Netflix, NVIDIA, and others where the interview prep content is targeted.
Technical Architecture
Serverless Architecture
Built on AWS serverless infrastructure using DynamoDB for database, Amplify for authentication, and Lambda functions for backend processing. Ensures scalability and cost-effectiveness.
Payment Integration
Full Stripe integration for subscription management, handling recurring payments, customer portal, and webhook processing for real-time subscription updates.
Secure Authentication
AWS Amplify with Cognito provides enterprise-grade authentication with email verification, password reset, and JWT token verification using aws-jwt-verify.
Database Design
DynamoDB schema optimized for quick queries with efficient indexing for user progress, question metadata, and leaderboard rankings.
Infrastructure as Code
Terraform configuration for reproducible infrastructure deployment, enabling easy environment management and disaster recovery.
Modern Frontend
Next.js 16 with React 19, TypeScript for type safety, and TailwindCSS for responsive design. Optimized for performance with server-side rendering and static generation.
Development Highlights
Full-Stack Development
Sole developer responsible for all aspects: frontend UI/UX, backend API design, database schema, AWS infrastructure setup, payment integration, deployment pipelines, and ongoing maintenance. Demonstrates ability to ship complete products independently.
Business Model Implementation
Implemented freemium model with free tier access and premium subscription. Integrated Stripe for payment processing, customer management, and subscription lifecycle handling including upgrades, downgrades, and cancellations.
Content Creation
Curated and created hundreds of technical interview questions with detailed explanations across multiple domains. Researched industry interview practices to ensure content relevance for FAANG-level interviews.
User Experience Design
Designed clean, intuitive interface focused on learning efficiency. Implemented progress tracking systems with visual feedback through badges and streaks to encourage consistent practice and user engagement.
Innovation & Impact
gitGood.dev demonstrates the complete lifecycle of SaaS product development from ideation to production deployment and monetization. This project showcases not just technical skills but also product management, business acumen, and the ability to deliver real value to users. The platform addresses a genuine market need for affordable, comprehensive technical interview preparation beyond just coding problems.
Why This Matters
Building gitGood.dev from concept to production demonstrates several key capabilities that are valuable in any tech organization:
- Independent Execution: Ability to take an idea from conception through design, development, deployment, and monetization without external dependencies
- Cloud Architecture Expertise: Deep understanding of AWS services and how to architect scalable, cost-effective cloud solutions
- Full-Stack Proficiency: Competency across the entire technology stack from frontend frameworks to backend services and database design
- Business Acumen: Understanding of SaaS business models, payment processing, and user acquisition strategies
- Product Mindset: Focus on solving real user problems and delivering value, not just writing code
- Deployment & Operations: Experience with CI/CD, infrastructure as code, monitoring, and maintaining production systems