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xavierScript/README.md

Hey, I'm David

Software Engineer building products and exploring blockchain systems.

I enjoy building things from the ground up, understanding how systems work underneath, and turning ideas into software people can actually use.

Currently focused on backend & systems engineering, exploring Solana and blockchains in general and building my own products.


What I'm Building

SabiPen

A product I'm building for fiction writers.

Status: In active development

The codebase is currently private, but you can check our progress live:

Visit SabiPen


Exploring

Solana & Blockchain Systems

Experimenting with Solana, Rust, and several other Blockchains that pique my interest.

→ Check out my public blockchain projects below.


Engineering

I'm currently going deeper into:

  • Backend engineering
  • Systems design
  • Data structures and algorithm
  • Distributed systems
  • Software architecture
  • Performance and scalability

I use real projects as a laboratory for applying what I learn.


Technologies

Languages

TypeScript JavaScript Rust Solidity Python

Backend

Node.js Fastify Express.js PostgreSQL MongoDB Redis Prisma REST APIs

Frontend

React.js React Native Next.js Tailwind CSS

Blockchain

SVM EVM Anchor Pinocchio

Tools

Git Linux Docker WordPress


Connect

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  1. ackee-school-of-solana-portfolio ackee-school-of-solana-portfolio Public

    A comprehensive collection of Solana blockchain development projects completed as part of the Ackee School of Solana Season 8 program. This portfolio demonstrates proficiency in Rust programming, S…

    TypeScript

  2. agent-economy-wallet agent-economy-wallet Public

    An Agentic Wallet for an Agentic Marketplace

    TypeScript

  3. passpay passpay Public

    A comprehensive LazorKit SDK integration example for Web & Mobile—PassPay demonstrates how to build passkey-powered Solana wallets with gasless transactions across both Next.js (Web) and React Nati…

    TypeScript

  4. async_builders_portfolio async_builders_portfolio Public

    A curated portfolio by David Onwuka showcasing blockchain development projects built during the Solana Turbine Async Builders program and through a continuous personal learning journey in Web3 engi…

  5. inventory-app-backend inventory-app-backend Public

    A simple Express.js backend for inventory management with role-based authentication.

    JavaScript

  6. my-articles my-articles Public

    A collection of all my published articles.