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Sheehan Lloyd sheehanlloyd

Software Engineering Student @ University of Waterloo

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sheehanlloyd /README.md

Hi there, I'm Sheehan Lloyd πŸ‘‹

πŸŽ“ Software Engineering @ University of Waterloo
πŸ€– prev. SWE Intern, Agentic AI @ Redcan.ai Β· πŸš€ Founding Engineer @ Relet
βš™οΈ Full-stack & DevOps Β· πŸ”§ Systems programming

Website LinkedIn Resume Email

πŸ›  Projects

A reverse-execution debugger for AArch64 Linux. Set a breakpoint, run past a crash, then step backwards to the instruction that corrupted your pointer.

Built from raw ptrace up β€” software BRK breakpoints, DWARF line/type/CFI parsing, checkpoint-and-replay via clone injection, and a web UI with a scrubbable execution timeline. Seven crates, no external debugger dependencies.

πŸ“ Architecture notes Β· ⏱ Determinism model

Relet TypeScript Private founding engineer

Rental management for student housing landlords. Property onboarding, tour scheduling, e-lease signing with generated PDFs, and rent tracking with automated payment collection β€” the full leasing lifecycle in one platform.

Next.js 15 App Router Β· React 19 Β· TypeScript Β· PostgreSQL Β· Playwright E2E Β· CI/CD to production

An MCP server for athlete data. Pulls WHOOP recovery, strain, and sleep alongside Google Calendar into an LLM tool surface, so an assistant can reason about training load against what's actually on your schedule.

OAuth 2.0 Β· Model Context Protocol Β· REST APIs

πŸ’» Languages, Frameworks, and Tools

Python Java C C++ JavaScript PHP SQL Lua Rust HTML CSS Arduino

MySQL PostgreSQL SQL Server SQLite PyTorch JAX NumPy SciPy

Linux Debian Ubuntu AWS Azure Docker CI/CD Bash Git Emacs Vim

πŸ“œ Certifications

AWS
Solutions Architect
Associate Β· Jan 2026 Azure
Data Scientist
Associate Β· Jan 2026 CompTIA
Linux+
Jul 2025 Oracle
Java SE 8 Programmer I
Jan 2025 Azure
AI Engineer
Associate Β· Jul 2024 Python Institute
PCAP
Associate Python Β· Jul 2024

Also: Fortinet NSE 1–3 Β· Azure AI Fundamentals Β· PCEP Entry-Level Python

Pinned Loading

  1. chronos chronos Public

    A reverse-execution debugger for AArch64 Linux. Step backwards through a program to find the instruction that broke it.

    Rust 1

  2. whoop-secondwind whoop-secondwind Public

    Local-first WHOOP data pipeline: sports-science metrics computed in Python, served to Claude via MCP tools that return conclusions, not rows. Pulls real WHOOP data via the API β€” a synthetic generat...

    Python 1

  3. Onyx Onyx Public

    The local-first AI code editor for macOS. Every model runs on your machine β€” a VS Code fork whose entire agent architecture is designed around local inference.

    TypeScript

  4. ai-codebase-onboarding-agent ai-codebase-onboarding-agent Public

    AI codebase onboarding agent β€” index any repo and ask how it works. Syntax-aware chunking, hybrid retrieval (vector + BM25 + import graph), and answers with clickable file:line citations. Generates...

    Python

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