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<a href="#main" class="skip-link">Skip to main content</a>
<div class="shell" id="main">
<!-- ========== TOP ========== -->
<nav class="top" aria-label="Primary">
<div class="wordmark">
<b>Jack Gaffney</b>
<span class="mono">/ builds things</span>
</div>
<div class="topnav mono">
<a href="#now"><span class="dot" aria-hidden="true"></span>now</a>
<a href="#work">work</a>
<a href="#projects">projects</a>
<a href="#stack">stack</a>
<a href="#contact">contact</a>
<button class="theme-toggle" id="themeToggle" type="button" aria-label="Toggle theme" aria-pressed="false">
<svg class="sun" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" aria-hidden="true"><circle cx="12" cy="12" r="4" fill="currentColor"/><path d="M12 2v2M12 20v2M4.93 4.93l1.41 1.41M17.66 17.66l1.41 1.41M2 12h2M20 12h2M4.93 19.07l1.41-1.41M17.66 6.34l1.41-1.41"/></svg>
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</button>
</div>
</nav>
<!-- ========== HERO ========== -->
<header class="hero">
<div>
<h1>Backend &<br/>AI‑native<br/><em>plumbing.</em></h1>
<p class="lede">
CS senior at Michigan. I build real-time voice systems,
multimodal AI workflows, and the unglamorous production
backends that make them work. Python, TypeScript, Go —
bias toward shipping.
</p>
<div class="meta">
<span>Ann Arbor, MI</span>
<span class="sep" aria-hidden="true">·</span>
<a href="mailto:jackgaff@umich.edu">jackgaff@umich.edu</a>
<span class="sep" aria-hidden="true">·</span>
<a href="https://github.com/jack-chaudier" target="_blank" rel="noopener noreferrer">github</a>
<span class="sep" aria-hidden="true">·</span>
<a href="https://linkedin.com/in/jackgaffney23" target="_blank" rel="noopener noreferrer">linkedin</a>
<span class="sep" aria-hidden="true">·</span>
<a href="jack_gaffney_resume.pdf" target="_blank" rel="noopener noreferrer">résumé</a>
</div>
</div>
<figure class="portrait-frame" id="portraitFrame">
<img
src="headshot.jpg"
alt="Portrait of Jack Gaffney"
width="637"
height="559"
loading="eager"
decoding="async"
/>
<figcaption class="cap">
<span>jack.gaffney</span><span id="portraitMeta">mi · '26</span>
</figcaption>
</figure>
</header>
<!-- ========== NOW ========== -->
<section id="now" aria-labelledby="now-title">
<div class="section-head">
<div class="num">§ 01</div>
<h2 id="now-title">Currently <em>running</em>.</h2>
</div>
<div class="now-grid">
<div aria-hidden="true"></div>
<div class="now-col">
<span class="caps">Building</span>
<p>mirage-mcp — making AI agentic coding more consistent & reliable.</p>
<p class="sub">
<a href="https://github.com/jack-chaudier/mirage-mcp" target="_blank" rel="noopener noreferrer">
github.com/jack-chaudier/mirage-mcp ↗
</a>
</p>
</div>
<div class="now-col">
<span class="caps">Reading</span>
<div class="book">
<div class="book-cover">
<img
src="book-cover.jpg"
alt="The Count of Monte Cristo cover art"
width="62"
height="92"
loading="lazy"
decoding="async"
/>
</div>
<div>
<p style="font-style:italic;">The Count of Monte Cristo — Dumas</p>
<p class="sub">a narrative has never been more intriguing.</p>
</div>
</div>
</div>
<div class="now-col">
<span class="caps">Top 4 on Letterboxd</span>
<ol class="films">
<li><span class="rk">01</span><span class="title">Get Out</span></li>
<li><span class="rk">02</span><span class="title">Cool Hand Luke</span></li>
<li><span class="rk">03</span><span class="title">No Country for Old Men</span></li>
<li><span class="rk">04</span><span class="title">Aliens</span></li>
</ol>
</div>
</div>
</section>
<!-- ========== WORK ========== -->
<section id="work" aria-labelledby="work-title">
<div class="section-head">
<div class="num">§ 02</div>
<h2 id="work-title">Work <em>history</em>.</h2>
</div>
<div class="work-row" tabindex="0" role="button" aria-expanded="false" data-detail="Built and deployed a full-stack internal data platform (Go/Gin · Next.js · PostgreSQL · Docker Compose) that replaced fragmented spreadsheet workflows. Designed modular Go REST endpoints consumed by Python data-generation pipelines, and shipped automated ingestion and validation with dynamic entity linking across complex datasets.">
<div class="when">Summer 2025</div>
<h3>Quantum Opus <span class="role">— Full-Stack SWE Intern</span></h3>
<div class="where">Plymouth, MI<br/><span>Go · Next · Postgres</span></div>
<div class="chev mono" aria-hidden="true">→</div>
</div>
<div class="work-row" tabindex="0" role="button" aria-expanded="false" data-detail="Coordinated logistics and material scheduling for seven distributed crews across a 50-mile radius. Moved from carpentry into pre-construction planning after identifying workflow bottlenecks, redesigning scheduling processes to improve cross-team coordination and reduce downtime.">
<div class="when">Summer 2024</div>
<h3>Renewit Decking <span class="role">— Carpenter & Logistics Lead</span></h3>
<div class="where">Charlevoix, MI<br/><span>wood · schedules</span></div>
<div class="chev mono" aria-hidden="true">→</div>
</div>
<div class="work-row" tabindex="0" role="button" aria-expanded="false" data-detail="Produced 2D/3D CAD drawings and technical documentation for mechanical systems. First exposure to engineering process — how drawings, specs, and real-world parts have to stay in sync.">
<div class="when">2022</div>
<h3>DTS Enterprises <span class="role">— Engineering Intern</span></h3>
<div class="where">Detroit, MI<br/><span>CAD · docs</span></div>
<div class="chev mono" aria-hidden="true">→</div>
</div>
<div class="work-row" tabindex="0" role="button" aria-expanded="false" data-detail="BSE, Computer Science. Coursework: Operating Systems, Embedded Systems, Computer Organization, Artificial Intelligence, Software Engineering, Data Structures & Algorithms, Linear Algebra. Graduating May 2026.">
<div class="when">May 2026</div>
<h3>University of Michigan <span class="role">— BSE Computer Science</span></h3>
<div class="where">Ann Arbor, MI<br/><span>Go Blue</span></div>
<div class="chev mono" aria-hidden="true">→</div>
</div>
</section>
<!-- ========== PROJECTS ========== -->
<section id="projects" aria-labelledby="projects-title">
<div class="section-head">
<div class="num">§ 03</div>
<h2 id="projects-title">Things I've <em>built</em>.</h2>
</div>
<div class="projects">
<article class="project">
<div class="visual viz-mcp" id="viz-mcp" aria-hidden="true"></div>
<div class="tag"><span>— 2026 · in progress</span><span>// wip</span></div>
<h3>mirage-mcp</h3>
<p class="subtitle">Consistency & reliability for agentic coding.</p>
<p>
An MCP server exploring how to make LLM coding agents
behave more deterministically — structured tool
surfaces, tighter feedback loops, and repeatable edits
so the agent gets the same answer twice.
</p>
<a class="source" href="https://github.com/jack-chaudier/mirage-mcp" target="_blank" rel="noopener noreferrer">jack-chaudier/mirage-mcp ↗</a>
<div class="stack">
<span class="chip">MCP</span>
<span class="chip">TypeScript</span>
<span class="chip">LLM agents</span>
<span class="chip">tooling</span>
</div>
</article>
<article class="project">
<div class="visual viz-waveform" id="viz-wave" aria-hidden="true"></div>
<div class="tag"><span>— 2025 — 2026</span><span>// live</span></div>
<h3>Tether</h3>
<p class="subtitle">Caregiver-controlled AI voice companion.</p>
<p>
A Go API serving real-time WebSocket voice sessions
backed by Amazon Bedrock (Nova). Post-call LLM
pipelines transcribe, extract structured health
insights, and surface next-call recommendations
through a React admin dashboard with a prompt lab.
</p>
<a class="source" href="https://github.com/jackgaff/tether" target="_blank" rel="noopener noreferrer">jackgaff/tether ↗</a>
<div class="stack">
<span class="chip">Go</span>
<span class="chip">React</span>
<span class="chip">PostgreSQL</span>
<span class="chip">Bedrock</span>
<span class="chip">WebSockets</span>
</div>
</article>
<article class="project">
<div class="visual viz-photo-grid" id="viz-photogrid" aria-hidden="true"></div>
<div class="tag"><span>— Pi Hacks, Mar 2026</span><span>// multimodal</span></div>
<h3>VulcanAI</h3>
<p class="subtitle">Multimodal jobsite → branded PDF in <60s.</p>
<p>
Jobsite photos (LLaMA vision) + voice intake (Deepgram)
→ branded daily construction reports (LLaMA 3.3).
FastAPI/SQLAlchemy backend, React 19 frontend with
drag-and-drop uploads and on-demand PDF export.
</p>
<a class="source" href="https://github.com/montben/VulcanAI" target="_blank" rel="noopener noreferrer">montben/VulcanAI ↗</a>
<div class="stack">
<span class="chip">Python</span>
<span class="chip">FastAPI</span>
<span class="chip">Deepgram</span>
<span class="chip">LLaMA</span>
<span class="chip">React</span>
</div>
</article>
<article class="project">
<div class="visual viz-phone" aria-hidden="true">
<div class="bars" id="viz-phone-bars"></div>
<div class="tag">live call · barge-in</div>
</div>
<div class="tag"><span>— 2026</span><span>// voice</span></div>
<h3>PGAI Voice Bot</h3>
<p class="subtitle">Low-latency phone-based voice assistant.</p>
<p>
Takes live phone calls via Twilio Media Streams,
bridges bidirectional audio into Nova Sonic for
turn-taking and speech, and drives an agentic loop
over a product knowledge base. Same problem class as
Tether, different stack, different constraints.
</p>
<a class="source" href="https://github.com/jack-chaudier/pgai" target="_blank" rel="noopener noreferrer">jack-chaudier/pgai ↗</a>
<div class="stack">
<span class="chip">Python</span>
<span class="chip">Nova Sonic</span>
<span class="chip">Twilio</span>
<span class="chip">agent loop</span>
</div>
</article>
<article class="project">
<div class="visual viz-kernel" id="viz-kernel" aria-hidden="true"></div>
<div class="tag"><span>— 2024 — 2025</span><span>// systems</span></div>
<h3>Ocean Microkernel</h3>
<p class="subtitle">Memory, scheduling, and userspace from scratch.</p>
<p>
An x86_64 microkernel with a Limine boot path,
GDT/IDT setup, SYSCALL/SYSRET, a buddy allocator,
4-level paging, and slab allocation. Capability-based
IPC keeps policy outside the kernel while preserving
performance.
</p>
<a class="source" href="https://github.com/jack-chaudier/ocean-linux" target="_blank" rel="noopener noreferrer">jack-chaudier/ocean-linux ↗</a>
<div class="stack">
<span class="chip">C11</span>
<span class="chip">x86_64 ASM</span>
<span class="chip">Limine</span>
<span class="chip">kernel</span>
</div>
</article>
<article class="project">
<div class="visual viz-engine" id="viz-engine" aria-hidden="true">
<span class="fps mono">60.0 fps · 10k actors</span>
</div>
<div class="tag"><span>— 2024</span><span>// 16ms budget</span></div>
<h3>Game Engine</h3>
<p class="subtitle">2D in C++17 / Lua, built to hold 60fps.</p>
<p>
ECS-style architecture with Lua scripting hooks for
fast gameplay iteration without recompiling. Careful
memory layout to reduce allocation churn, sustaining
60 FPS at 10k+ entities under a strict 16ms frame
budget.
</p>
<a class="source" href="https://github.com/jack-chaudier/fr-ocean-engine" target="_blank" rel="noopener noreferrer">jack-chaudier/fr-ocean-engine ↗</a>
<div class="stack">
<span class="chip">C++17</span>
<span class="chip">Lua</span>
<span class="chip">SDL2</span>
<span class="chip">Box2D</span>
</div>
</article>
</div>
</section>
<!-- ========== STACK ========== -->
<section id="stack" aria-labelledby="stack-title">
<div class="section-head">
<div class="num">§ 04</div>
<h2 id="stack-title">The <em>stack</em>.</h2>
</div>
<div class="cloud">
<span data-w="3">Python</span>
<span data-w="3">TypeScript</span>
<span data-w="3">Go</span>
<span data-w="2">React</span>
<span data-w="2">Next.js</span>
<span data-w="2">FastAPI</span>
<span data-w="2">PostgreSQL</span>
<span data-w="1">Docker</span>
<span data-w="1">Swift</span>
<span data-w="1">Rust</span>
<span data-w="1">C++</span>
<span data-w="1">C</span>
<span data-w="1">Lua</span>
<span data-w="1">SQL</span>
<span data-w="2">WebSockets</span>
<span data-w="1">REST</span>
<span data-w="2">LLM pipelines</span>
<span data-w="2">MCP</span>
<span data-w="2">multimodal</span>
<span data-w="1">transcription</span>
<span data-w="1">vision</span>
<span data-w="1">prompt iteration</span>
<span data-w="2">AWS Bedrock</span>
<span data-w="1">Twilio</span>
<span data-w="1">Deepgram</span>
<span data-w="1">Firebase</span>
<span data-w="1">Linux</span>
<span data-w="1">Git</span>
<span data-w="1">kernels</span>
<span data-w="1">allocators</span>
</div>
<div class="stack-foot">
<span><strong>Education</strong> · University of Michigan · B.S.E. Computer Science · May 2026</span>
<span>Coursework: OS · Embedded · Comp Org · AI · DS&A · Linear Algebra</span>
</div>
</section>
<!-- ========== FOOTER ========== -->
<footer class="colophon" id="contact">
<div class="section-num-footer">§ 05</div>
<div>
<h3>Say<br/><em>hello</em>.</h3>
</div>
<div class="col">
<span class="caps">Elsewhere</span>
<p><a href="mailto:jackgaff@umich.edu">jackgaff@umich.edu</a></p>
<p><a href="https://github.com/jack-chaudier" target="_blank" rel="noopener noreferrer">github.com/jack-chaudier</a></p>
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<p><a href="https://x.com/jackchaudier" target="_blank" rel="noopener noreferrer">x.com/jackchaudier</a></p>
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