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John Gatward
2026-03-21 00:32:03 +00:00
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@@ -4,9 +4,9 @@
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<title>Havox — John Gatward</title>
<title>Havox</title>
<meta name="description"
content="John Gatward's portfolio: software engineering projects spanning backend systems, infrastructure, and creative developer experiments."/>
content="John Gatward's portfolio"/>
<link rel="preconnect" href="https://fonts.googleapis.com">
<link
href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,400;0,700;1,400&family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,600;1,9..144,300&display=swap"
@@ -29,17 +29,16 @@
<!-- ─── Hero ─────────────────────────────────────────────────── -->
<section id="hero">
<p class="hero-eyebrow">// havox.org — v4</p>
<p class="hero-eyebrow">// havox.org - v4</p>
<h1 class="hero-name">John <em>Gatward</em></h1>
<p class="hero-subtitle">Software Engineer</p>
<p class="hero-desc">
<span class="hero-by-line"><span class="hero-by">Backend engineer</span><span class="hero-by-role">by
<span class="hero-by-line"><span class="hero-by">Backend engineer</span><span class="hero-by-role">by
trade</span></span>
<span class="hero-by-line"><span class="hero-by">Developer enthusiast</span><span class="hero-by-role">by
curiosity</span></span>
<span class="hero-by-line"><span class="hero-by">Unofficial family cloud engineer</span><span
class="hero-by-role">by necessity</span></span>
<span class="hero-by-footer">I like building useful things and understanding how they work.</span>
</p>
<div class="hero-links">
<a href="#projects" class="btn btn-primary">View projects</a>
@@ -61,28 +60,26 @@
<!-- Bio blocks -->
<div class="about-grid reveal" style="transition-delay:0.05s">
<div class="about-block">
<p>Havox started in 2017 as a place to dump whatever projects I had written. Four redesigns and several
dead domains later, it's still going. Less a portfolio, more a scrapbook.</p>
</div>
<div class="about-block">
<span class="about-block-tag tag tag-blue">day job</span>
<p>Backend engineer at <strong>Sainsbury's</strong> Supply Chain &amp; Logistics. Microservices,
Spring Boot, Kafka, MongoDB, AWS. It's good fun.</p>
<p>Backend engineer at <strong>Sainsbury's</strong> Supply Chain &amp; Logistics. It's good fun.</p>
</div>
<div class="about-block">
<span class="about-block-tag tag tag-teal">dev</span>
<p>Fascinated with new languages, frameworks, and shiny tech I probably don’t need. Constantly
tinkering, breaking things, and learning just enough to build something cooler next time.</p>
learning just enough to build something slightly cooler next time.</p>
</div>
<div class="about-block">
<span class="about-block-tag tag tag-yellow">linux</span>
<p>Long-time Linux user and recovering distro-hopper. Currently: Hyprland on Void. Home server
running 24/7 for friends and family who didn't ask for it but appreciate it.</p>
</div>
<div class="about-block">
<span class="about-block-tag tag tag-mauve">havox</span>
<p>Started in 2017 as a place to dump whatever I found interesting. Four redesigns and several dead
domains later, it's still going. Less a portfolio, more a paper trail.</p>
<p>Long-time Linux user and distro-hopper. Self-hosted server running 24/7 for friends and family who
didn't ask for it but <s>probably</s> definitely appreciate it.</p>
</div>
</div>
@@ -97,7 +94,7 @@
<div class="v-content">
<div class="v-title">Havox V4 <span class="v-current-badge">current</span></div>
<div class="v-year">2026 → present</div>
<div class="v-desc">Catppuccin Mocha. Single page. Built to highlight projects and craft.</div>
<div class="v-desc">Catppuccin Mocha. Single page. Professional.</div>
</div>
</div>
@@ -106,7 +103,9 @@
<div class="v-content">
<div class="v-title">Havox V3 <span class="v-link-arrow">↗</span></div>
<div class="v-year">2022 → 2025</div>
<div class="v-desc">Borrowed a professional looking template. Wasn't very 'me'.</div>
<div class="v-desc">Borrowed a professional template and tried to make it suit my needs. Wasn't
very 'me'.
</div>
</div>
</a>
@@ -115,7 +114,9 @@
<div class="v-content">
<div class="v-title">Umbra.cyou <span class="v-link-arrow">↗</span></div>
<div class="v-year">2019 → 2022</div>
<div class="v-desc">Complete redesign using SCSS & Nord theme.</div>
<div class="v-desc">Built from the ground up focusing on a minimal clean design. Stole my code
VS Code theme for a colour palette.
</div>
</div>
</a>
@@ -124,8 +125,7 @@
<div class="v-content">
<div class="v-title">Havox.org <span class="v-link-arrow">↗</span></div>
<div class="v-year">2016 → 2019</div>
<div class="v-desc">Entire site in one PHP file 🤣. Had a daily <s>trump</s>
quote-of-the-day achieved via webscraping a site daily.
<div class="v-desc">Wrote the entire site in one php file. Hosted on a £1/year VPS.
</div>
</div>
</a>
@@ -147,8 +147,8 @@
<div class="skill-card reveal">
<span class="skill-card-icon">☕</span>
<h3>Backend</h3>
<p>Professional Java experience building microservices &amp; RESTful APIs with Spring Boot. TDD with
JUnit & Mockito.</p>
<p>Professional experience designing, building and deploying services. Using a modern tech stack in the
Supply Chain & Logistics industry.</p>
<div class="tag-row">
<span class="tag tag-blue">Java</span>
<span class="tag tag-green">Spring Boot</span>
@@ -160,8 +160,8 @@
<div class="skill-card reveal" style="transition-delay:0.08s">
<span class="skill-card-icon">🎨</span>
<h3>Frontend & Creative</h3>
<p>Comfortable with react and CSS. I enjoy visualising algorithms interactively — it's more fun than
a console output.</p>
<p>Comfortable with React and CSS. I've always enjoyed visualising algorithms interactively - it's way more
fun than a console output.</p>
<div class="tag-row">
<span class="tag tag-teal">React</span>
<span class="tag tag-green">TypeScript</span>
@@ -171,8 +171,8 @@
<div class="skill-card reveal" style="transition-delay:0.16s">
<span class="skill-card-icon">🖥</span>
<h3>Systems & Infra</h3>
<p>Long-term Linux user. Self-hosted web & media servers. Comfortable with networking, security
practices, and the command line.</p>
<p>Long-term Linux & Vim user. Self-hosted web & media servers. Using industry practices when it comes to
networks & security.</p>
<div class="tag-row">
<span class="tag tag-green">Linux</span>
<span class="tag tag-teal">Docker</span>
@@ -204,7 +204,8 @@
<p class="section-label reveal">projects</p>
<h2 class="section-heading reveal" style="transition-delay:0.05s">Things I <em>built</em></h2>
<p class="section-intro reveal" style="transition-delay:0.1s">
A timeline of fun projects used as an excuse to learn something new.
A timeline of my projects and an overview of my journey as a developer. Often times getting inspired and trying
to recreate something cool I saw.
</p>
<div class="projects-subheading reveal" style="transition-delay:0.12s">
@@ -215,8 +216,7 @@
<a class="card" href="https://wordlesolver.umbra.mom">
<span class="card-date">9 Feb 2025</span>
<span class="card-title">Wordle Solver</span>
<span class="card-desc">Built after getting frustrated after one too many missed 3-guess games. Now it
plays marginally better than me. Uses information theory to recommend the next best guess.</span>
<span class="card-desc">Built after one too many missed 3-guess games. Now it plays marginally better than me. Uses information theory to recommend the next best guess.</span>
<span class="tag-row">
<span class="tag tag-yellow">Rust</span>
<span class="tag tag-teal">React</span>
@@ -227,7 +227,7 @@
<a class="card" href="https://crackthequote.umbra.mom">
<span class="card-date">13 Apr 2024</span>
<span class="card-title">Crack the Quote</span>
<span class="card-desc">A substitution-cipher puzzle game with a daily challenge.</span>
<span class="card-desc">A substitution-cipher puzzle game with a daily challenge. Built for me and my family to play after getting bored with NYT games.</span>
<span class="tag-row">
<span class="tag tag-yellow">Rust</span>
<span class="tag tag-teal">React</span>
@@ -254,16 +254,17 @@
</fieldset>
<div id="project-grid" class="card-grid reveal" style="transition-delay:0.2s">
<a class="card project-card" data-tech="python" href="https://pubquiz.umbra.mom">
<article class="card project-card card-link" data-tech="python" data-href="https://pubquiz.umbra.mom">
<span class="card-date">03 Apr 2025</span>
<span class="card-title">Pub Quiz Dashboard</span>
<span class="card-desc">A Python dashboard to track quiz performance.</span>
<span class="card-desc">A Python dashboard to track our local pub quiz performances.</span>
<span class="tag-row">
<span class="tag tag-red">Python</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="cpp webassembly" href="projects/thin_ice/thin_ice.html">
</article>
<article class="card project-card card-link" data-tech="cpp webassembly"
data-href="projects/thin_ice/thin_ice.html">
<span class="card-date">14 Nov 2024</span>
<span class="card-title">Thin Ice</span>
<span class="card-desc">A small browser tile game inspired by one I played growing up.</span>
@@ -273,90 +274,96 @@
<span class="tag tag-peach">RayLib</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="zig webassembly" href="projects/tsp/index.html">
</article>
<article class="card project-card card-link" data-tech="zig webassembly" data-href="projects/tsp/index.html">
<span class="card-date">20 Mar 2024</span>
<span class="card-title">Travelling Salesman Problem</span>
<span class="card-desc">A nearest-neighbor + 2-opt visualiser.</span>
<span class="card-desc">A nearest-neighbor + 2-opt visualiser. Wanted to revisit one of my first projects but with a super optimised tech-stack & algorithm.</span>
<span class="tag-row">
<span class="tag tag-yellow">Zig</span>
<span class="tag tag-sky">WebGL</span>
<span class="tag tag-teal">WebAssembly</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="rust" href="projects/flocking/index.html">
</article>
<article class="card project-card card-link" data-tech="rust" data-href="projects/flocking/index.html">
<span class="card-date">31 Jan 2024</span>
<span class="card-title">Flocking</span>
<span class="card-desc">A boids simulation showing emergent behaviour from three simple rules.</span>
<span class="card-desc">Rewrote the entire project in Rust from GoLang to compile to wasm. Was fun being able to use DOM controls to affect the simulation.</span>
<span class="tag-row">
<span class="tag tag-yellow">Rust</span>
<span class="tag tag-peach">Raylib</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript" href="https://samstoreymusic.com">
</article>
<article class="card project-card card-link" data-tech="javascript" data-href="https://samstoreymusic.com">
<span class="card-date">1 Nov 2023</span>
<span class="card-title">samstoreymusic.com</span>
<span class="card-desc">A website design and build for a friend working in music.</span>
<span class="card-desc">A website design and build for a friend working in music. Saving him the hosting fees :)</span>
<span class="tag-row">
<span class="tag tag-mauve">HTML/CSS</span>
<span class="tag tag-green">JavaScript</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript react" href="projects/cellular_automata/index.html">
</article>
<article class="card project-card card-link" data-tech="javascript react"
data-href="projects/cellular_automata/index.html">
<span class="card-date">21 Jul 2023</span>
<span class="card-title">Game of Life</span>
<span class="card-desc">After building Conway's Game of Life in p5.js, I expanded it into a generic automata simulator.</span>
<span class="card-desc">After building Conway's Game of Life in p5.js as one of my first projects, I expanded it into a generic automata simulator.</span>
<span class="tag-row">
<span class="tag tag-teal">React</span>
<span class="tag tag-green">JavaScript</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="cpp webassembly" href="projects/percolation/index.html">
</article>
<article class="card project-card card-link" data-tech="cpp webassembly"
data-href="projects/percolation/index.html">
<span class="card-date">5 Feb 2022</span>
<span class="card-title">Percolation</span>
<span class="card-desc">A visual demo of 'water' percolating through a medium, as it disappears.</span>
<span class="card-desc">Watched a brilliant video by <a target="_blank"
href="https://youtu.be/a-767WnbaCQ?si=f3NM95INeoZqzIi8">Spectral Collective</a> and just had to recreate it.</span>
<span class="tag-row">
<span class="tag tag-blue">C</span>
<span class="tag tag-peach">RayLib</span>
<span class="tag tag-teal">WebAssembly</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/cubic_bezier_curve/index.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/cubic_bezier_curve/index.html">
<span class="card-date">1 Oct 2021</span>
<span class="card-title">Drawing Bézier curves</span>
<span class="card-desc">An interactive diagram for cubic Bézier curves.</span>
<span class="card-desc">An interactive animation for how cubic Bézier curves are constructed. Inspirated by this beautiful video by <a
target="_blank" href="https://youtu.be/aVwxzDHniEw?si=mCylw_p-fMSdhyvN">Fraya Holmér</a></span>
<span class="tag-row">
<span class="tag tag-green">JavaScript</span>
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/marching_squares.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/marching_squares.html">
<span class="card-date">17 Sep 2021</span>
<span class="card-title">2D Marching Squares</span>
<span class="card-desc">Basic map rendering.</span>
<span class="card-desc">I saw the 3D version of this algorithm in a game dev log and was inspired to create this 2d land/sea map generator thing.</span>
<span class="tag-row">
<span class="tag tag-green">JavaScript</span>
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/warping_lines.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5" data-href="projects/warping_lines.html">
<span class="card-date">2 Apr 2020</span>
<span class="card-title">Müller-Lyer illusion</span>
<span class="card-desc">A JavaScript visualisation of the Müller-Lyer optical illusion.</span>
<span class="card-desc">JavaScript visualisation of the Müller-Lyer optical illusion.</span>
<span class="tag-row">
<span class="tag tag-green">JavaScript</span>
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/fourier_series.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5" data-href="projects/fourier_series.html">
<span class="card-date">27 Feb 2019</span>
<span class="card-title">Fourier series</span>
<span class="card-desc">Builds a square wave from sine components to show Fourier series in motion.</span>
@@ -365,18 +372,21 @@
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/ellipse_construction.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/ellipse_construction.html">
<span class="card-date">23 Feb 2019</span>
<span class="card-title">Constructing an ellipse</span>
<span class="card-desc">A geometric construction demo inspired by 3Blue1Brown.</span>
<span class="card-desc">A geometric construction demo inspired by <a target="_blank"
href="https://youtu.be/xdIjYBtnvZU?si=uI66LS_O_eAWqG4e">3Blue1Brown's video</a> on Feynman's lost lecture.</span>
<span class="tag-row">
<span class="tag tag-green">JavaScript</span>
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/pi_approximation.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/pi_approximation.html">
<span class="card-date">18 Mar 2018</span>
<span class="card-title">Calculating PI</span>
<span class="card-desc">A Monte Carlo approximation of pi using random sampling.</span>
@@ -385,8 +395,9 @@
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/oscillations_in_3d.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/oscillations_in_3d.html">
<span class="card-date">17 Dec 2017</span>
<span class="card-title">Oscillations in 3D</span>
<span class="card-desc">A JavaScript recreation of a Bees and Bombs animation.</span>
@@ -395,17 +406,19 @@
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
<a class="card project-card" data-tech="javascript p5" href="projects/maze_generation/index.html">
</article>
<article class="card project-card card-link" data-tech="javascript p5"
data-href="projects/maze_generation/index.html">
<span class="card-date">13 Nov 2017</span>
<span class="card-title">Maze generator</span>
<span class="card-desc">A p5.js maze generator using depth-first search and recursive backtracking.</span>
<span class="card-desc">Discovered the <a target="_blank"
href="https://youtu.be/HyK_Q5rrcr4?si=G6g8xDHK0cc_MwhG">Coding Train's channel</a> and learnt coding through following along.</span>
<span class="tag-row">
<span class="tag tag-green">JavaScript</span>
<span class="tag tag-red">p5.js</span>
</span>
<span class="card-arrow">→</span>
</a>
</article>
</div>
<div class="projects-more-row reveal" style="transition-delay:0.22s">
@@ -423,30 +436,20 @@
<h2>Let's <em>talk</em></h2>
<p>
I am currently employed and open to the right software engineering opportunity, particularly
backend or full-stack roles with teams that value thoughtful delivery and technical quality.
backend or full-stack roles with friendly, close-knit teams.
</p>
<p>
For professional enquiries, please connect with me on LinkedIn.
For professional enquiries, please contact me on LinkedIn.
</p>
</div>
<div class="contact-links">
<a href="https://github.com/jayo60013" class="contact-link" target="_blank" rel="noopener">
<span class="contact-link-icon">
<svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor">
<path
d="M12 0C5.37 0 0 5.37 0 12c0 5.31 3.435 9.795 8.205 11.385.6.105.825-.255.825-.57 0-.285-.015-1.23-.015-2.235-3.015.555-3.795-.735-4.035-1.41-.135-.345-.72-1.41-1.23-1.695-.42-.225-1.02-.78-.015-.795.945-.015 1.62.87 1.845 1.23 1.08 1.815 2.805 1.305 3.495.99.105-.78.42-1.305.765-1.605-2.67-.3-5.46-1.335-5.46-5.925 0-1.305.465-2.385 1.23-3.225-.12-.3-.54-1.53.12-3.18 0 0 1.005-.315 3.3 1.23.96-.27 1.98-.405 3-.405s2.04.135 3 .405c2.295-1.56 3.3-1.23 3.3-1.23.66 1.65.24 2.88.12 3.18.765.84 1.23 1.905 1.23 3.225 0 4.605-2.805 5.625-5.475 5.925.435.375.81 1.095.81 2.22 0 1.605-.015 2.895-.015 3.3 0 .315.225.69.825.57A12.02 12.02 0 0 0 24 12c0-6.63-5.37-12-12-12z"/>
</svg>
</span>
<span class="contact-link-icon contact-link-icon--github" aria-hidden="true"></span>
<span class="contact-link-label">GitHub</span>
<span class="contact-link-handle">jayo60013</span>
</a>
<a href="https://www.linkedin.com/in/jaygatward" class="contact-link" target="_blank" rel="noopener">
<span class="contact-link-icon">
<svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor">
<path
d="M20.447 20.452h-3.554v-5.569c0-1.328-.027-3.037-1.852-3.037-1.853 0-2.136 1.445-2.136 2.939v5.667H9.351V9h3.414v1.561h.046c.477-.9 1.637-1.85 3.37-1.85 3.601 0 4.267 2.37 4.267 5.455v6.286zM5.337 7.433a2.062 2.062 0 0 1-2.063-2.065 2.064 2.064 0 1 1 2.063 2.065zm1.782 13.019H3.555V9h3.564v11.452zM22.225 0H1.771C.792 0 0 .774 0 1.729v20.542C0 23.227.792 24 1.771 24h20.451C23.2 24 24 23.227 24 22.271V1.729C24 .774 23.2 0 22.222 0h.003z"/>
</svg>
</span>
<span class="contact-link-icon contact-link-icon--linkedin" aria-hidden="true"></span>
<span class="contact-link-label">LinkedIn</span>
<span class="contact-link-handle">jaygatward</span>
</a>
@@ -456,7 +459,7 @@
<!-- ─── Footer ─────────────────────────────────────────────────── -->
<footer>
<span>umbra.mom — John Gatward</span>
<span>umbra.mom - John Gatward</span>
<span>
Source code (self‑hosted): <a href="https://gitea.umbra.mom/jay/havox">repository</a>
</span>