From Portfolio Project to Product Engineering: Building ChadWallet with React Native

I Didn't Build ChadWallet to Impress Recruiters.
I Built It to Think Like a Product Engineer.

GitHub Repository

⭐ https://github.com/Tanuj122001/chadwallet

Most portfolio projects answer one simple question:

"Can this developer build an app?"

I wanted my next project to answer a much more important one.

"Can this developer build software that can grow?"

There's a big difference.

One is about completing features.

The other is about making engineering decisions that still make sense months—or even years—later.

That's the mindset behind ChadWallet.

An AI-powered Solana wallet built with React Native + TypeScript.

But this project was never really about crypto.

It was about understanding how modern mobile products are architected, scaled, secured, and maintained.

Before writing code, I changed the question.

Instead of asking:

"What feature should I build next?"

I started asking:

"If this application had one million users tomorrow, would I still be confident in today's engineering decisions?"

That single question influenced almost everything.

Not just the code.

The architecture.

The folder structure.

The data flow.

The security model.

The scalability.

The maintainability.

Engineering Before Features

Rather than creating one large application, ChadWallet is built as a collection of independent modules.

Every feature owns its own:

Screens
Components
Hooks
Services
Repository
Store
Types
Utilities

Business logic stays outside the UI.

Repositories isolate data sources.

Services abstract external providers.

Presentation focuses only on presentation.

That separation makes every future feature easier to build, easier to maintain, and easier to test.

Technology Stack
React Native CLI
TypeScript
Zustand
NativeWind
Privy Authentication
Supabase
Solana Blockchain
Alchemy RPC
Jupiter API
Birdeye API
Engineering Principles

The project follows principles that prioritize long-term maintainability over short-term convenience.

Feature-First Architecture
Clean Architecture
SOLID Principles
Repository Pattern
Service-Oriented Design
Modular Components
Reusable UI System
Type-Safe Development
Performance-Oriented Rendering
Accessibility Awareness
Scalable State Management

The goal wasn't to write more code.

The goal was to write code that future developers—including future me—could confidently work on.

Security Is an Architectural Decision

One of the biggest lessons I learned during this project is that security isn't something you "add" after an application works.

It influences every layer of the system.

Some of the practices implemented throughout ChadWallet include:

Secure Storage for sensitive information
Environment-based configuration
No hardcoded credentials or secrets
Repository isolation between UI and external services
Runtime validation
Secure authentication flow
Defensive error handling
Layered application boundaries
Separation of concerns
Reduced client-side attack surface
Principle of Least Privilege

The objective wasn't to make unrealistic claims.

The objective was to build using engineering practices inspired by production software, where security, maintainability, and scalability are considered from the beginning—not added at the end.

AI Didn't Build ChadWallet.

It Changed How I Build Software.

Like many developers today, I use AI.

Not to replace engineering.

To improve it.

AI helped me explore alternatives, validate ideas, accelerate research, challenge assumptions, and iterate faster.

But architecture...

system design...

trade-offs...

performance...

security...

maintainability...

Those decisions still depended on engineering judgment.

This project taught me that AI is incredibly powerful—but only when paired with a developer who understands why a solution works, not just how to generate it.

What I Learned

Building software isn't just about shipping features.

It's about making thousands of small decisions that determine whether an application becomes easier—or harder—to evolve over time.

This project fundamentally changed the way I think about:

Mobile architecture
Scalability
Maintainability
Performance
Security
Product engineering

More than any framework or library, those lessons are what I'm most proud of.

What's Next

ChadWallet is still evolving.

The roadmap includes:

Production backend
Real blockchain transactions
Advanced portfolio analytics
Hardware wallet support
Biometric authentication
Production CI/CD
Automated testing
Monitoring & observability
Advanced security hardening

Every new feature will continue following the same engineering principles the project was built on.

Explore ChadWallet

⭐ GitHub Repository

https://github.com/Tanuj122001/chadwallet

If you're interested in software architecture, mobile engineering, or React Native development, I'd genuinely appreciate your feedback.

Feel free to:

Explore the repository
Review the architecture
Suggest improvements
Open issues
Submit Pull Requests

I believe the best engineers never stop learning, and every thoughtful review is an opportunity to improve.

Final Thought

I don't believe great software is defined by the number of features it has.

I believe it's defined by the quality of the decisions behind those features.

ChadWallet isn't just another project in my portfolio.

It's my attempt to demonstrate how I think about software engineering—through architecture, scalability, maintainability, security, and long-term product design.

If you're an engineer, I'd love your feedback.

If you're a founder building ambitious products, I'd love to hear your perspective.

And if you're someone who values engineering as much as shipping features, I hope this project resonates with you.

📌 Tech Stack

React Native • TypeScript • Zustand • NativeWind • Privy • Supabase • Solana • Alchemy RPC • Jupiter API • Birdeye API • Clean Architecture • Repository Pattern • AI • Mobile Engineering