One-Person-Army Software Engineer

My name is Fang-Pen Lin. I am a one-person-army software engineer. I learn new things quickly, focus on solving the problem, and can leverage different available open source tools to build different ends of software products in a vast range of aspects: mobile to web, client to server, single node to cluster, development to devops, prototype to production and user experience to security. I contribute to open source sometimes. Also write some articles.

Examples of some stuff some of my works in different fields:

Machine Learning

• Marketplace, a training algorithm without backprop.
  • Marketplace: my first attempt at training without backprop on GPU efficiently
  • Marketplace V2 is all you need: A training algorithm on par with backprop that needs only forward pass
  • Continual learning with the Marketplace algorithm: model learns new data through inference, not training
• MAZE, an open-source machine learning framework for evolving gene based neuron networks in a series of controlled environments. Please read my articles:
  • Article00 - How I would build AGI
  • Article01 - My AI models are finally evolving!
• CakeLens, a ML model for detecting AI-gen video. I collected and labeled data, designed and built the mode, trained, and inferenced it from end-to-end in a month.
• Tinyloader, training data loader for loading data in background processes via shared memory to tinygrad
• tinygrad, contributed to tinygrad, like pos_weight for binary_crossentropy_logits and fixed a VIZ bug

Front-end

• Avataaars generator, React/TypeScript - One of the most popular avatar generators on internet. Open sourced here
• Open Doddles, React/TypeScript - Doddles generator

Back-end

• How BeanHub works part2, large-scale auditable Git repository system based on container layers
• BeanHub Python - A GitHub for Beancount

Mobile

• Embassy, Swift/iOS - Lightweight async HTTP server library in pure Swift for UI automation tests

DevOps

• nix-playground - Command line tools for patching nixpkgs package source code easily
• ansible - omit, Python - I contributed the omit feature for ansible
• Nvidia GPU on bare metal NixOS Kubernetes cluster explained
• Mini PC Kubernetes cluster, Cilium/Nebula/Kubernetes/NixOS - Bare metal Kubernetes cluster I built and run for lowering my cloud bill

Security

• How BeanHub works part1, contains the danger of processing Beancount data with sandbox
• CVE-2019-13132 - Critical (9.8/10) buffer overflow security bug I found in libzmq and reported
• Elliptic Curve Cryptography Explained - Article I wrote explaining how ECC works in a simple way

Data

• BeanQueue, Python/PostgreSQL - a lightweight Python task queue framework based on SQLAlchemy, PostgreSQL SKIP LOCKED queries and NOTIFY / LISTEN statements