Hey, I'm Sean

📍 Washington DC Metro | 🤖 Agent-Forward Computer Scientist | 🪖 Army Veteran and '07 West Point Grad

Currently using agentic engineering techniques to improve government software at scale.

Skills

Connect

Selected Repos

Mainframe, COBOL & Modernization

• 🎓 limerick-cobol - Michael Coughlan's beloved University of Limerick COBOL Course. Remastered in 4k.
• 📚 usenet-comp-lang-cobol — comp.lang.cobol Usenet archive (1994–2013)
• 🧾 mainframe-job — TypeScript API for submitting IBM mainframe batch jobs to z/OS JES
• 🖥️ 3270-server — simple Python server that serves a 3270 logon form
• ⌨️ keypunch-old — lightweight editor for learning COBOL, PL/I, and z/Architecture assembly with hot reload
• 🗄️ klein-cobol-faq — William M. Klein's COBOL FAQ, archived and re-hosted
• 📖 cobol-reference — COBOL reference notes and examples
• 🎮 grok-cobol-game — COBOL game experiments, because sometimes the path to wisdom runs through batch processing.

WebAssembly, Runtimes & Low-Level Experiments

• 🧩 wasm — Exercism WebAssembly Track
• 🧩 aWsm — LLVM-based WebAssembly ahead-of-time compiler and runtime.
• 🧩 sledge-serverless-framework — WebAssembly serverless runtime designed for the Edge.
• 🧪 exercism-wasi — porting WAT solutions to WASI
• 🔬 wasm2c-examples — experiments with WebAssembly-to-C output
• 🕸️ libc-webassembly-text-format — libc-flavored experiments in WebAssembly Text Format
• ⚙️ wasmer-embedding — initial experiments embedding Wasmer
• 📊 graph500-web — benchmarks comparing compute-heavy JS and WASM code
• 🧱 test-wast-compiler — WAST/WAT compiler experiments

Systems, Computer Arch

• 🗃️ power-of-2-allocator — power-of-2 slab allocator in C with OS fallback for large allocs, per-bucket locking, and full malloc/calloc/realloc API
• 🧵 build-your-own-process-manager — systems programming lab around fork, exec, wait, and POSIX process APIs
• 🧵 user-threads — N:1 cooperative green-thread library using Windows Fibers; port of the xv6 gwthd kernel threading API to userspace
• 🔒 user-locks — three lock types (spin, block, adaptive) ported from the xv6 kernel to Windows userspace; companion to user-threads
• 🔎 file-finder — C experiments around finding files
• 🧰 modern-c-starter — starter experiments for modern C projects
• 🧱 c-build-experiments — Makefile and C build-system experiments
• 🖥️ Minicomputer-Simulator — minicomputer simulation experiments.
• 🧪 ncurses_programming — terminal UI experiments with ncurses.

Cloud, GovTech & Platform Work

• ☁️ awspricer — PowerShell script to scrape AWS API pricing for GovCloud services
• 🏛️ faa-iaas-standards — FAA cloud migration and governance standards archive
• 📘 faa-cloud-playbook — FAA Cloud Services Playbook

Distributed Systems

• 🕸️ service-mesh-dashboard — Service Mesh Dashboard archived from prior employer
• 🕸️ chord-grpc — Distributed Hash Table using Node.js, gRPC, and the Chord Algorithm.

Fullstack Web Dev

• 🧭 transcend — Metaverse, before Mark Zuckerberg tried it
• 🍊 froot-wars — physics game in the style of Angry Birds
• 📸 instagram-clone — Instagram clone built using Progressive Web App techniques
• 🎧 music-player — Spotify clone
• 🍪 ecommerce-site — Cookie Online Storefront
• 🍽️ restaurant-review-site — Restaurant Review Site
• 🖖 lcars-guide — Star Trek TNG episode browser with an LCARS-styled UI
• 🕹️ Virtual-Boy-Guessing-Game — vector-art web game inspired by the Nintendo Virtual Boy
• 🍎 health-tracker — food logging and calorie totals using USDA FoodData Central
• 🧭 oldtown-map — historic Old Town Alexandria locations on Google Maps with Wikipedia images
• 🕹️ classic-arcade-game — classic arcade game project.
• 🔬 nginx-profiling — NGINX profiling experiments.

Semantic / Decentralized Web

• 🧬 nationjs-solid — Solid and decentralized web experiments.
• 🐣 hatchling — semantic/decentralized web experiments.

Machine Learning / Deep Learning

• 🛡️ android-malware-classifier — Android malware classification experiments.

Coursework, Katas, Data Structures and Algorithms

• 🏰 WestPoint-CS300-2005 — Ada programs from West Point CS300, Fall 2005
• 🏰 quartermaster — Military equipment checkout and reservation system; LAMP coursework from West Point IS450, 2007
• ☕ WestPoint-IT105-2003 — Java programs from West Point IT105, Fall 2003
• 🚉 west-point-train-station — Ada work with a very specific sense of place
• 🧪 exercism-solutions — Backup of my Exercism solutions
• 🧮 divide-conquer-katas — divide-and-conquer algorithms in C
• 🌐 graph-algorithm-katas — graph algorithm katas with modern Java practices
• 🧠 dynamic-programming-katas — dynamic programming practice
• 🔎 bfs-c — breadth-first-search practice in C.
• 📦 min-heap-priority-queue-c — generic min-heap priority queue in C

Exploring Languages

• 🌕 io-lang — Io language experiments.
• 🧙 common-lisp — Common Lisp experiments.
• 🧩 prolog — Prolog experiments.