00
Based in West Africa

aka David

NzubechukwuMadubuike.

Backend & systems engineer building fast, reliable financial infrastructure in Go and Rust. DeFi protocols, SDKs, and developer tooling.

“The only way to do great work is to love what you do.”
Steve Jobs
01
/01 About

I'm a backend engineer focused on systems that are fast, reliable, and built to last. I work primarily in Go and Rust, with a deep focus on financial infrastructure, DeFi protocols, and developer tooling.

I've built production systems across fintech and Web3, from a high-performance trading terminal with a fused orderbook achieving sub-25ms matching latency, to stablecoin payment infrastructure handling concurrent state transitions at 99.9% uptime, to protocol indexers and lending protocol backends on Aptos and Solana.

Outside of work I build in the open. I created BeaconOnBase, a protocol that makes any codebase instantly agent-ready via MCP. I write SDKs for protocols I find interesting. And I'm currently building Demi, a subset of Go that compiles to Solana's SBF bytecode.

I care about the primitives. The infrastructure nobody sees but everyone depends on.

Away from the terminal, I watch a lot of anime [AOT, JJK, CSM], and bleed red for Liverpool. Not much of a gym guy, but I'll always show up for a game of soccer or ping pong.

02
/02 Stack
Languages
  • Go
  • Rust
  • TypeScript
  • Python
  • C++
Data
  • PostgreSQL
  • MySQL
  • MariaDB (via Appwrite)
  • TimescaleDB
  • NoSQL (Firestore, Mongo)
Infra / DevOps
  • Docker
  • K8S
  • GHA
  • GitHub
  • GitLab
Web3
  • Solana
  • Aptos
  • Stellar
  • Base
  • Cedra
Frontend
  • Next.js
  • React Native
  • Svelte
  • Vue
/03 Selected Work

Things
I've
built.

8 featured systems: infrastructure, protocols, and SDKs. Keep scrolling →

01Prediction-markets trading terminal

Vantic

High-performance trading terminal with a fused orderbook in Go, sub-25ms matching latency, and multi-chain wallet infrastructure on Solana and Base.

GoSolanaBaseTypeScript
02DLMM + lending protocol

CelerFi / Juncta

Backend and protocol indexer for a DLMM + lending protocol on Aptos/Cedra, wiring smart contract calls into REST APIs.

GoAptosCedraREST
03Agentic MCP protocol

Beacon

Open protocol that makes any repository instantly agent-ready via MCP, with on-chain identity registration and AI capability inference.

MCPBaseTypeScriptAI
04pNode / pRPC client

Xandeum pRPC SDK

Go, TypeScript, and Rust SDK for interacting with Xandeum's pNode architecture via the pRPC API.

GoRustTypeScriptSDK
05SDK for Confidential SPL transfers

Magicblock PP Kit

Go SDK wrapping Magicblock's confidential payment API, covering the full SPL transfer flow including signing and RPC routing.

GoSolanaSPLSDK
06WIP

demi-go

Go-to-SBF compiler

A subset of Go that compiles to Solana's SBF bytecode. Work in progress.

GoRustCompilerSolana
// link pending
07Solana-native browser

Breeze Browser

Privacy-first, Solana-native browser built for the Seeker. Features a custom search engine for the Solana ecosystem, written in Go.

React NativeGoSolanaTypeScript
08Decentralzxized VPN

ZARKAM

A decentralized VPN designed to run on the DAWN Black Box hardware ecosystem, routing traffic through a privacy-preserving mesh of user-owned nodes.

GoTypeScriptDecentralization
/04 Uses

What I
use.

The tools, hardware, and software I use daily to build things. Inspired by uses.tech. Keep scrolling →

Hardware
  • ThinkPad T440p
    16GB RAM, 128GB SSD, i5 vPro. The indestructible daily driver.
  • Arch Linux
    Minimal, tiling, exactly how I like it. (btw)
Editor & Tools
  • Neovim
    Main editor. Modal, fast, all keyboard.
  • Nano
    For quick edits when Neovim is overkill.
  • TablePlus
    Database work, clean and fast.
Languages & Runtimes
  • Go
    Systems, CLIs, backend services.
  • Rust
    When performance is non-negotiable.
  • TypeScript
    Web and full-stack, JS with guardrails.
  • Python
    Scripts, ML experiments, quick prototypes.
  • Bun
    Fast JS runtime, replaced Node for most things.
  • pnpm
    Package manager of choice.
Infrastructure
  • Docker / Kubernetes
    Containers and orchestration.
  • Vercel
    Frontend deploys, unbeatable DX.
  • Cloudflare
    DNS, Workers, R2 storage.
  • Render
    Backend services and cron jobs.
  • Railway
    Spin up infra in minutes.
AI Tools
  • Claude / Claude Code
    Primary AI. Reasoning is unmatched.
  • Charm (Crush / Mods)
    A coding agent in rotation.
  • Codex
    Another coding agent in rotation.
Design
  • Excalidraw
    Architecture diagrams and whiteboarding.