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l9rins/README.md

👋 Hi, I'm Mark Lorenz Barangan

I build pixels, logic, and models. Full-stack developer by day, Head of Creative Services by night.

I architect scalable cloud-native applications blending data intelligence, immersive design, and robust DevOps. From PyTorch models to Spring Boot microservices, I deliver production-ready systems with CI/CD pipelines, 95%+ test coverage, and live demos.


🛠️ The Stack

My toolkit for the past year. I believe in using the right tool for the specific domain:

Languages Frameworks & Mobile Data & AI Cloud & DevOps
Java Spring PyTorch Docker
Python React TensorFlow Kubernetes
TypeScript Next.js Pandas AWS
C++ Flutter OpenCV Linux
C# Node.js HuggingFace Git

🧰 Extended Toolbelt

  • Data: NumPy, SciPy, Scikit-Learn, Matplotlib, Plotly, Apache Spark
  • Databases: MySQL, PostgreSQL, MongoDB, Redis, SQLite, Firebase
  • Creative: Blender, ZBrush, Figma
  • Langs: R, Scala, C, Bash

🏗️ Selected Work

📸 Foiné

The "Pinterest" for power users. A full-stack image discovery engine built for performance and scale.

  • Stack: React, Spring Boot, MySQL
  • The Win: Engineered a responsive grid layout that handles high-res image collections with sub-second load times.

Ending the spreadsheet chaos. A revolutionary solution designed to liberate bookkeepers and small CPAs from the fragility of Excel-based accounting.

  • Problem: Manual entry errors and unscalable spreadsheet systems.
  • Solution: A robust, type-safe platform that streamlines financial tracking for modern professionals.

Idea validation at scale. A production-ready SaaS for discovering and managing startup ideas based on real user pain points.

  • Stack: Next.js 14, FastAPI, Docker
  • The Build: Enterprise-grade architecture featuring JWT auth, global error boundaries, and full containerization for seamless deployment.

⚡ Recent Updates

  • 🔭 Building: A new personal portfolio with high-end UI/UX.
  • 🌱 Learning: Advanced shading nodes & procedural textures in Blender.
  • 🎨 Creating: An asset library of reusable 3D sports props.

📫 Let's Connect

Where to find me:

Portfolio LinkedIn


Your GitHub stats

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  1. LedgerLift LedgerLift Public

    LedgerLift represents a revolutionary solution for bookkeepers and small CPAs struggling with Excel-based accounting systems.

    Python 2

  2. SutoyDB SutoyDB Public

    SutoyDB is a High-performance, thread-safe, in-memory key-value store built from scratch using Java 21 Virtual Threads. A Redis-compatible server demonstrating mastery of concurrent programming, ne…

    Java 1

  3. foine-2025 foine-2025 Public

    Foiné is a Pinterest‑style visual discovery platform built with Spring Boot and React, designed to make exploring, sharing, and organizing visual content effortless. With a sleek glassmorphism UI, …

    JavaScript 2

  4. graham-doddsville-website graham-doddsville-website Public

    The Graham and Doddsville Website is a modern, responsive platform built to serve Australia’s premier value investing education community. Designed with a mobile-first approach and premium styling,…

    HTML 1

  5. Heart-Disease-Prediction-E2E- Heart-Disease-Prediction-E2E- Public

    Production-grade heart disease prediction system using machine learning, trained on the UCI Cleveland dataset.

    TypeScript

  6. resume-ranker-pro resume-ranker-pro Public

    Resume Ranker Pro is a production‑ready system designed to streamline candidate evaluation with hybrid AI scoring and enterprise‑grade scalability. Built with modern backend technologies, it demons…

    Python