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@n4zen-dev-studio

N4ZEN Dev Studio

A collection of software engineering projects, showcasing my work across production-grade mobile systems, SDKs, and backend infrastructure
README.md

👋 Welcome to n4zen-dev-studio

A collection of software engineering projects, showcasing my work across:

  • 🤖 Machine Learning – CV, OCR, audio ML, embeddings
  • 🔐 Security & Authentication – passkeys, device integrity, session design
  • 🖥 Web Applications & Systems Engineering
  • 📱 React Native & Native Modules (iOS / Android)

These are some recent projects that focus on architectural optimization, performance-focused engineering, and practical ML integration. Building production-grade mobile systems, SDKs, and backend infrastructure with a focus on performance, security, and real-world scalability. From offline-first sync engines to zero-trust vault architectures and React Native performance tooling — this studio is where systems are designed, built, and stress-tested.

🚀 Featured Projects

🔹 Velo — Offline-First Project Management Engine

Jira-like system built with a custom sync engine

  • Delta sync + conflict resolution
  • Append-only logs + revision tracking
  • Fastify + Prisma + Postgres backend

🔗 Repo • 🎬 Demo 📲 Releases

🔹 Locker — Zero-Trust Encrypted Vault

Cross-device secure vault disguised as a calculator

  • Passkey authentication + recovery keys
  • End-to-end encryption (VMK/RVK model)
  • Secure multi-device sync

🔗 Repo • 🎬 Demo 📲 Releases

🔹 Pulse + PerfKit — Mobile Performance Toolkit

SDK + demo app for deep React Native performance insights

  • TTFF / TTI tracking
  • JS + UI thread jank detection
  • Network + navigation tracing
  • Exportable performance sessions

🔗 Repo • 🎬 Demo 📲 Releases 🛠 SDK

🔹 Doc.I_ — Mobile Document Intelligence Engine

On-device OCR + classification system

  • ML Kit OCR pipeline
  • Structured data extraction
  • Evaluation + dataset tooling
  • Batch processing + export formats

🔗 Repo • 🎬 Demo 📲 Releases

🧪 SDKs & Systems

🔸 Orkestron — Job Scheduling System

  • Cron + interval jobs
  • Retry strategies + concurrency limits
  • Execution history + observability

🔗 Repo • 🎬 Demo 📲 Releases

🔸 PerfKit — React Native Performance SDK

  • Lightweight TurboModule
  • Real-time metrics + exportable sessions
  • Designed for production apps

🔗 Repo • 🎬 Demo 📲 Releases 🛠 SDK

🔸 PixelBench — Image Compression Benchmark Suite

  • Native + JS performance comparison
  • Real-time benchmarking UI
  • Cross-platform (iOS + Android)

🔗 Repo • 🎬 Demo 📲 Releases

🛠 Tech Stack

  • Node.js / Fastify / PostgreSQL / Supabase
  • React Native / TurboModules / Native Modules
  • OpenCV / ONNX Runtime / Whisper / Embeddings
  • Next.js / Three.js / WebGL
  • WebAuthn / Passkeys / Device Integrity / Session Design
  • Systems Architecture / Job Scheduling / Low-level DSP

📱 Mobile

React Native Expo Hermes MMKV

⚙️ Backend & Infra

Fastify Prisma PostgreSQL Docker Caddy

🔐 Security & Auth

Passkeys WebAuthn Encryption

📊 Systems & Performance

Sync Engine Performance Instrumentation

📬 Contact

N4ZEN
Senior Software Engineer
Portfolio coming soon

📈 TL;DR

  • Built custom sync engine (not Firebase/Firestore dependent)
  • Designed zero-trust vault with real key management
  • Developed React Native performance tooling (SDK level)
  • Hands-on with production infra (Docker + reverse proxy + TLS)

Popular repositories Loading

  1. .github .github Public

  2. Locker Locker Public

    Zero-trust encrypted vault with cross-device sync, recovery key architecture, and stealth UX (calculator disguise).

    TypeScript

  3. Velo Velo Public

    Full-stack offline-first project management engine with operation-based synchronization, Fastify backend, and PostgreSQL persistence.

    TypeScript

  4. DocI DocI Public

    A high-performance, on-device document intelligence system designed to extract structured data from unstructured mobile-captured documents such as receipts, invoices, and forms.

    Python

  5. PixelBench PixelBench Public

    A reusable high-performance **React Native TurboModule (`rn-image-compressor`)** paired with a **visual benchmarking tool (`PixelBench`)** to evaluate, compare, and optimize image compression strat…

    TypeScript

  6. Orkestron Orkestron Public

    Orckestron is a job orchestration and observability system that simulates distributed background workflows with a real-time DevOps-style console for analyzing execution, failures, and reliability.

    TypeScript

Repositories

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