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1017 lines (985 loc) · 33 KB
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Maksym Synenko — Senior Full-Stack Engineer</title>
<meta
name="description"
content="Senior full-stack / backend engineer in Gdańsk. TypeScript, NestJS, React, PostgreSQL, Azure, MCP servers and AI agent tooling. Open source: zerograph, bond, react-html5-parser."
/>
<meta property="og:title" content="Maksym Synenko — Senior Full-Stack Engineer" />
<meta
property="og:description"
content="Platforms, product frontends and AI agent tooling. TypeScript, NestJS, React, PostgreSQL, Azure, MCP."
/>
<meta property="og:url" content="https://devmaxxx.github.io/" />
<meta property="og:type" content="website" />
<link
rel="icon"
href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect width='64' height='64' rx='14' fill='%231f5f74'/%3E%3Ctext x='32' y='43' font-family='Arial' font-weight='800' font-size='28' text-anchor='middle' fill='%23f6c453'%3EMS%3C/text%3E%3C/svg%3E"
/>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
rel="stylesheet"
href="https://fonts.googleapis.com/css2?family=Archivo:wdth,wght@62..125,400..900&family=JetBrains+Mono:wght@400;500;600&display=swap"
/>
<style>
:root {
color-scheme: light;
--bg: #f4f6f5;
--bg-2: #e9eeec;
--surface: #ffffff;
--fg: #10181c;
--muted: #56656c;
--line: #d5dedd;
--accent: #1f5f74;
--accent-2: #d9940b;
--glow: rgb(31 95 116 / 0.14);
--node: 31 95 116;
--display: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
--mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
--radius: 14px;
}
@media (prefers-color-scheme: dark) {
:root:not([data-theme='light']) {
color-scheme: dark;
--bg: #0b1114;
--bg-2: #101a1e;
--surface: #121d22;
--fg: #e8eef0;
--muted: #93a6ad;
--line: #22323a;
--accent: #6cc3d9;
--accent-2: #f6c453;
--glow: rgb(108 195 217 / 0.12);
--node: 108 195 217;
}
}
:root[data-theme='dark'] {
color-scheme: dark;
--bg: #0b1114;
--bg-2: #101a1e;
--surface: #121d22;
--fg: #e8eef0;
--muted: #93a6ad;
--line: #22323a;
--accent: #6cc3d9;
--accent-2: #f6c453;
--glow: rgb(108 195 217 / 0.12);
--node: 108 195 217;
}
* {
box-sizing: border-box;
}
html {
scroll-behavior: smooth;
scroll-padding-top: 72px;
}
@media (prefers-reduced-motion: reduce) {
html {
scroll-behavior: auto;
}
}
body {
margin: 0;
background: var(--bg);
color: var(--fg);
font: 400 17px/1.6 var(--display);
font-variation-settings: 'wdth' 96;
-webkit-font-smoothing: antialiased;
}
a {
color: inherit;
}
:focus-visible {
outline: 2px solid var(--accent-2);
outline-offset: 3px;
border-radius: 4px;
}
.wrap {
max-width: 1120px;
margin: 0 auto;
padding: 0 16px;
}
@media (min-width: 720px) {
.wrap {
padding: 0 32px;
}
}
.mono {
font-family: var(--mono);
}
/* Nav */
.nav {
position: sticky;
top: 0;
z-index: 10;
backdrop-filter: blur(12px);
-webkit-backdrop-filter: blur(12px);
background: color-mix(in srgb, var(--bg) 78%, transparent);
border-bottom: 1px solid color-mix(in srgb, var(--line) 60%, transparent);
}
.nav .wrap {
display: flex;
align-items: center;
justify-content: space-between;
height: 60px;
gap: 16px;
}
.mark {
font: 800 1.05rem var(--display);
font-variation-settings: 'wdth' 80;
text-decoration: none;
letter-spacing: 0.02em;
}
.mark span {
color: var(--accent-2);
}
.nav ul {
display: flex;
gap: 4px;
list-style: none;
margin: 0;
padding: 0;
font: 500 0.82rem var(--mono);
}
.nav li a {
display: block;
padding: 6px 10px;
border-radius: 8px;
text-decoration: none;
color: var(--muted);
}
.nav li a:hover {
color: var(--fg);
background: var(--bg-2);
}
.nav li a.cv {
color: var(--bg);
background: var(--fg);
}
@media (max-width: 560px) {
.nav li.opt {
display: none;
}
}
/* Hero */
.hero {
position: relative;
overflow: hidden;
border-bottom: 1px solid var(--line);
}
#graph {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
pointer-events: none;
}
.hero::after {
content: '';
position: absolute;
inset: 0;
pointer-events: none;
background: radial-gradient(
ellipse 70% 80% at 20% 40%,
var(--bg) 30%,
transparent 75%
);
}
.hero .wrap {
position: relative;
z-index: 1;
padding-top: clamp(56px, 11vw, 128px);
padding-bottom: clamp(56px, 9vw, 112px);
}
.status {
display: inline-flex;
align-items: center;
gap: 10px;
font: 500 0.8rem var(--mono);
color: var(--muted);
border: 1px solid var(--line);
background: var(--surface);
padding: 6px 12px 6px 10px;
border-radius: 999px;
}
.dot {
width: 8px;
height: 8px;
border-radius: 50%;
background: #2fb36c;
box-shadow: 0 0 0 0 rgb(47 179 108 / 0.6);
animation: pulse 2.4s infinite;
}
@keyframes pulse {
70% {
box-shadow: 0 0 0 8px rgb(47 179 108 / 0);
}
100% {
box-shadow: 0 0 0 0 rgb(47 179 108 / 0);
}
}
@media (prefers-reduced-motion: reduce) {
.dot {
animation: none;
}
}
h1 {
margin: 22px 0 0;
font-weight: 850;
font-variation-settings: 'wdth' 64;
font-size: clamp(3.4rem, 13vw, 8.6rem);
line-height: 0.86;
letter-spacing: -0.015em;
}
h1 .last {
display: block;
color: transparent;
-webkit-text-stroke: 2px var(--fg);
}
@supports not (-webkit-text-stroke: 2px black) {
h1 .last {
color: var(--fg);
}
}
.lede {
margin: 28px 0 0;
max-width: 40ch;
font-size: clamp(1.15rem, 2.4vw, 1.45rem);
line-height: 1.4;
font-variation-settings: 'wdth' 90;
}
.lede em {
font-style: normal;
color: var(--accent);
font-weight: 650;
}
.cta {
display: flex;
flex-wrap: wrap;
gap: 10px;
margin-top: 32px;
}
.btn {
display: inline-flex;
align-items: center;
gap: 8px;
font: 600 0.92rem var(--mono);
text-decoration: none;
padding: 12px 18px;
border-radius: 10px;
border: 1px solid var(--line);
background: var(--surface);
cursor: pointer;
color: var(--fg);
transition:
transform 0.15s,
border-color 0.15s;
}
.btn:hover {
transform: translateY(-2px);
border-color: var(--accent);
}
.btn.primary {
background: var(--fg);
color: var(--bg);
border-color: var(--fg);
}
.btn svg {
width: 16px;
height: 16px;
}
/* Facts */
.facts {
display: grid;
grid-template-columns: repeat(4, minmax(0, 1fr));
border-bottom: 1px solid var(--line);
}
.facts > div {
padding: 26px 20px;
min-width: 0;
}
.facts > div + div {
border-left: 1px solid var(--line);
}
.facts b {
display: block;
font-weight: 850;
font-variation-settings: 'wdth' 70;
font-size: clamp(2rem, 4.5vw, 3rem);
line-height: 1;
font-variant-numeric: tabular-nums;
}
.facts span {
display: block;
margin-top: 8px;
font-size: 0.9rem;
color: var(--muted);
line-height: 1.35;
}
@media (max-width: 720px) {
.facts {
grid-template-columns: repeat(2, minmax(0, 1fr));
}
.facts > div:nth-child(3) {
border-left: 0;
}
.facts > div:nth-child(n + 3) {
border-top: 1px solid var(--line);
}
}
/* Sections */
section {
padding: clamp(64px, 9vw, 112px) 0 0;
}
.kicker {
font: 500 0.78rem var(--mono);
letter-spacing: 0.14em;
text-transform: uppercase;
color: var(--accent);
margin: 0 0 12px;
}
h2 {
margin: 0 0 36px;
font-weight: 820;
font-variation-settings: 'wdth' 70;
font-size: clamp(2.1rem, 5.5vw, 3.6rem);
line-height: 0.98;
letter-spacing: -0.01em;
max-width: 18ch;
}
/* Projects */
.projects {
display: grid;
grid-template-columns: repeat(6, minmax(0, 1fr));
gap: 16px;
}
.project {
grid-column: span 3;
position: relative;
display: flex;
flex-direction: column;
gap: 12px;
padding: 26px;
border-radius: var(--radius);
background: var(--surface);
border: 1px solid var(--line);
min-width: 0;
transition:
transform 0.2s,
border-color 0.2s,
box-shadow 0.2s;
}
.project:hover {
transform: translateY(-3px);
border-color: var(--accent);
box-shadow: 0 18px 40px -20px var(--glow), 0 0 0 4px var(--glow);
}
.project.feature {
grid-column: span 6;
display: grid;
grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
gap: 28px;
padding: 32px;
background:
radial-gradient(circle at 100% 0%, var(--glow), transparent 55%),
var(--surface);
}
.project.third {
grid-column: span 2;
}
@media (max-width: 900px) {
.project,
.project.third {
grid-column: span 6;
}
.project.feature {
grid-template-columns: minmax(0, 1fr);
}
}
.project h3 {
margin: 0;
font-weight: 800;
font-variation-settings: 'wdth' 78;
font-size: 1.6rem;
line-height: 1.1;
}
.feature h3 {
font-size: clamp(2rem, 4vw, 2.8rem);
}
.project p {
margin: 0;
color: var(--muted);
line-height: 1.5;
}
.meta {
display: flex;
flex-wrap: wrap;
gap: 6px;
font: 500 0.74rem var(--mono);
}
.tag {
padding: 4px 8px;
border-radius: 6px;
background: var(--bg-2);
color: var(--fg);
border: 1px solid var(--line);
}
.tag.lang {
background: transparent;
border-color: var(--accent);
color: var(--accent);
}
.links {
margin-top: auto;
display: flex;
flex-wrap: wrap;
gap: 14px;
padding-top: 6px;
font: 600 0.84rem var(--mono);
}
.links a {
text-decoration: none;
color: var(--accent);
}
.links a:hover {
text-decoration: underline;
text-underline-offset: 3px;
}
.term {
margin: 0;
align-self: stretch;
padding: 18px 20px;
border-radius: 10px;
background: #0b1114;
color: #cfe3e8;
font: 400 0.82rem/1.7 var(--mono);
overflow-x: auto;
border: 1px solid #22323a;
}
.term .p {
color: #f6c453;
}
.term .c {
color: #6f8790;
}
.term .o {
color: #6cc3d9;
}
/* What I do */
.do {
display: grid;
grid-template-columns: repeat(3, minmax(0, 1fr));
gap: 16px;
}
@media (max-width: 900px) {
.do {
grid-template-columns: minmax(0, 1fr);
}
}
.do article {
padding: 26px;
border-top: 3px solid var(--accent);
background: var(--surface);
border-radius: 0 0 var(--radius) var(--radius);
border-left: 1px solid var(--line);
border-right: 1px solid var(--line);
border-bottom: 1px solid var(--line);
}
.do article:nth-child(2) {
border-top-color: var(--accent-2);
}
.do article:nth-child(3) {
border-top-color: var(--fg);
}
.do h3 {
margin: 0 0 10px;
font-weight: 780;
font-variation-settings: 'wdth' 80;
font-size: 1.3rem;
}
.do p {
margin: 0 0 14px;
color: var(--muted);
}
/* Experience */
.xp {
list-style: none;
margin: 0;
padding: 0;
border-top: 1px solid var(--line);
}
.xp li {
display: grid;
grid-template-columns: 180px minmax(0, 1fr);
gap: 8px 32px;
padding: 26px 0;
border-bottom: 1px solid var(--line);
}
@media (max-width: 720px) {
.xp li {
grid-template-columns: minmax(0, 1fr);
}
}
.xp time {
font: 500 0.85rem var(--mono);
color: var(--muted);
padding-top: 4px;
}
.xp h3 {
margin: 0;
font-weight: 780;
font-variation-settings: 'wdth' 80;
font-size: 1.3rem;
}
.xp h3 span {
color: var(--accent);
}
.xp p {
margin: 6px 0 0;
color: var(--muted);
max-width: 70ch;
}
/* Stack */
.stack {
display: grid;
grid-template-columns: 150px minmax(0, 1fr);
gap: 14px 32px;
margin: 0;
}
@media (max-width: 720px) {
.stack {
grid-template-columns: minmax(0, 1fr);
gap: 6px;
}
.stack dd {
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</head>
<body>
<nav class="nav" aria-label="Main">
<div class="wrap">
<a class="mark" href="#top">Maksym<span>.</span>Synenko</a>
<ul>
<li class="opt"><a href="#projects">Projects</a></li>
<li class="opt"><a href="#work">Work</a></li>
<li><a href="https://github.com/devmaxxx">GitHub</a></li>
<li><a class="cv" href="cv/">CV</a></li>
</ul>
</div>
</nav>
<main id="top">
<header class="hero">
<canvas id="graph" aria-hidden="true"></canvas>
<div class="wrap">
<span class="status"><span class="dot"></span>Open to work · remote or hybrid in Gdańsk</span>
<h1>Maksym <span class="last">Synenko</span></h1>
<p class="lede">
Senior full-stack engineer. I build <em>platforms</em>, the <em>products</em> on top of them, and
lately the <em>AI agent tooling</em> that works inside them.
</p>
<div class="cta">
<a class="btn primary" href="cv/">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M14 3H6a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V9z"/><path d="M14 3v6h6M8 13h8M8 17h5"/></svg>
Read my CV
</a>
<a class="btn" href="cv/maksym-synenko-cv.pdf" download>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M12 3v12m0 0-5-5m5 5 5-5M5 21h14"/></svg>
PDF
</a>
<a class="btn" href="https://www.linkedin.com/in/devmaxxxx/">LinkedIn</a>
<a class="btn" href="https://github.com/devmaxxx">GitHub</a>
</div>
</div>
</header>
<div class="wrap">
<div class="facts" aria-label="At a glance">
<div><b>8 yrs</b><span>shipping to production</span></div>
<div><b>6 yrs</b><span>on one healthcare staffing platform</span></div>
<div><b>~1,000</b><span>consultants on the mobile app I maintain</span></div>
<div><b>200k+</b><span>records migrated from a legacy CRM</span></div>
</div>
</div>
<section id="projects">
<div class="wrap">
<p class="kicker">Open source</p>
<h2>Things I build when nobody asks.</h2>
<div class="projects">
<article class="project feature reveal">
<div style="display: flex; flex-direction: column; gap: 14px">
<div class="meta"><span class="tag lang">Rust</span><span class="tag">MCP server</span><span class="tag">npm</span></div>
<h3>zerograph</h3>
<p>
A knowledge graph of a repository's docs and code, from TypeScript and Kotlin to Rust, SQL and Bicep. Ask by id, keyword or
paraphrase, trace the impact of a change, and serve it all to AI agents over MCP — built and
refreshed at zero model tokens.
</p>
<div class="meta">
<span class="tag">knowledge graph</span><span class="tag">BM25</span><span class="tag">embeddings</span><span class="tag">impact analysis</span><span class="tag">25 languages</span>
</div>
<div class="links">
<a href="https://github.com/devmaxxx/zerograph">GitHub →</a>
<a href="https://www.npmjs.com/package/zerograph">npm →</a>
</div>
</div>
<pre class="term" aria-label="zerograph commands"><span class="p">$</span> pnpm add -D zerograph
<span class="p">$</span> zerograph build <span class="c"># full graph, no model calls</span>
<span class="p">$</span> zerograph ask cancellation policy
<span class="p">$</span> zerograph impact StaffService
<span class="c"> callers by depth, importing files, a risk line</span>
<span class="p">$</span> zerograph trace StaffController StaffService
<span class="p">$</span> zerograph changes --base main
<span class="p">$</span> zerograph mcp <span class="c"># serve it to agents</span></pre>
</article>
<article class="project reveal">
<div class="meta"><span class="tag lang">JavaScript</span><span class="tag">Claude Code plugin</span></div>
<h3>bond</h3>
<p>
The dev-workflow plugin my team runs in Claude Code: 17 commands, 14 agents, 14 skills and 12 hooks,
with MCP integrations for Jira, Bitbucket and Teams — ticket to merged PR.
</p>
<div class="links"><a href="https://github.com/devmaxxx/bond">GitHub →</a></div>
</article>
<article class="project reveal">
<div class="meta"><span class="tag lang">TypeScript</span><span class="tag">React</span><span class="tag">React Native</span></div>
<h3>react-html5-parser</h3>
<p>
Turns HTML strings into React and React Native elements, sanitized by default. No
<code class="mono">dangerouslySetInnerHTML</code>.
</p>
<div class="links">
<a href="https://github.com/devmaxxx/react-html5-parser">GitHub →</a>
<a href="https://www.npmjs.com/package/react-html5-parser">npm →</a>
</div>
</article>
<article class="project third reveal">
<div class="meta"><span class="tag lang">TypeScript</span><span class="tag">React</span></div>
<h3>react-clear-browser-cache</h3>
<p>Notices a new deploy in open tabs, clears Cache Storage and reloads — or asks first.</p>
<div class="links">
<a href="https://github.com/devmaxxx/react-clear-browser-cache">GitHub →</a>
<a href="https://www.npmjs.com/package/react-clear-browser-cache">npm →</a>
</div>
</article>
<article class="project third reveal">
<div class="meta"><span class="tag lang">TypeScript</span><span class="tag">Kotlin</span><span class="tag">iOS</span></div>
<h3>react-native-next-wheel-picker</h3>
<p>iOS-style wheel picker: native UIPickerView on iOS, a matching Kotlin wheel on Android.</p>
<div class="links"><a href="https://github.com/devmaxxx/react-native-next-wheel-picker">GitHub →</a></div>
</article>
<article class="project third reveal">
<div class="meta"><span class="tag">more</span></div>
<h3>And the rest</h3>
<p>Experiments, forks and work in progress live on my GitHub profile.</p>
<div class="links"><a href="https://github.com/devmaxxx?tab=repositories">All repositories →</a></div>
</article>
</div>
</div>
</section>
<section id="about">
<div class="wrap">
<p class="kicker">What I do</p>
<h2>End to end, schema to deploy.</h2>
<div class="do">
<article class="reveal">
<h3>Platforms & backends</h3>
<p>
API-first NestJS services, PostgreSQL and MongoDB schemas, event-driven workflows with Hatchet and
Temporal, and the Azure infrastructure they run on, as code.
</p>
<div class="meta"><span class="tag">NestJS</span><span class="tag">PostgreSQL</span><span class="tag">Temporal</span><span class="tag">Azure</span></div>
</article>
<article class="reveal">
<h3>Product frontends</h3>
<p>
Next.js portals, React Native apps used in the field every day, and design systems that keep them
consistent — with type-safe clients generated from the API.
</p>
<div class="meta"><span class="tag">React</span><span class="tag">Next.js</span><span class="tag">React Native</span></div>
</article>
<article class="reveal">
<h3>AI agent tooling</h3>
<p>
MCP servers inside the product, embedding-based matching and semantic search, and the plugins and
knowledge graphs that make coding agents useful on a real codebase.
</p>
<div class="meta"><span class="tag">MCP</span><span class="tag">RAG</span><span class="tag">pgvector</span><span class="tag">Claude Code</span></div>
</article>
</div>
</div>
</section>
<section id="work">
<div class="wrap">
<p class="kicker">Experience</p>
<h2>Where I've shipped.</h2>
<ol class="xp">
<li class="reveal">
<time>Dec 2020 — now</time>
<div>
<h3>Senior Full-Stack Engineer, <span>Efisco</span></h3>
<p>
Core platforms of Bonliva, a Swedish healthcare staffing group: a greenfield ERP (NestJS, Next.js,
Hatchet, 20+ packages), the CRM, a consultant portal with BankID and the React Native app. Shipped
an MCP server into the API, migrated 200,000+ records from the legacy CRM, own the Azure
infrastructure as code.
</p>
</div>
</li>
<li class="reveal">
<time>Jun 2020 — Dec 2020</time>
<div>
<h3>Freelance Front-End Developer</h3>
<p>React front-ends for small businesses, including a dapp with MetaMask, ERC-20/721 and Uniswap flows.</p>
</div>
</li>
<li class="reveal">
<time>Oct 2018 — Jun 2020</time>
<div>
<h3>Software Engineer (Front-End), <span>CRISPERSOFT</span></h3>
<p>React/Redux SPAs for real-estate, social and digital-asset products; a Material UI design system with Storybook; mentored juniors.</p>
</div>
</li>
<li class="reveal">
<time>Aug 2018 — Oct 2018</time>
<div>
<h3>JavaScript Engineer, <span>Mobilsoft</span></h3>
<p>UI features against a SQL-backed API, in production within the first weeks.</p>
</div>
</li>
</ol>
</div>
</section>
<section id="stack">
<div class="wrap">
<p class="kicker">Toolbox</p>
<h2>Stack I reach for.</h2>
<dl class="stack meta">
<dt>Backend</dt>
<dd><span class="tag">TypeScript</span><span class="tag">Node.js</span><span class="tag">NestJS</span><span class="tag">GraphQL</span><span class="tag">REST / OpenAPI</span><span class="tag">WebSockets</span><span class="tag">C# / .NET</span><span class="tag">Stripe</span></dd>
<dt>Frontend</dt>
<dd><span class="tag">React</span><span class="tag">Next.js</span><span class="tag">React Native</span><span class="tag">TanStack Query</span><span class="tag">Tailwind CSS</span><span class="tag">Storybook</span></dd>
<dt>Data</dt>
<dd><span class="tag">PostgreSQL</span><span class="tag">MongoDB</span><span class="tag">Redis</span><span class="tag">Kysely</span><span class="tag">TypeORM</span><span class="tag">Hatchet</span><span class="tag">Temporal</span><span class="tag">Service Bus</span></dd>
<dt>Cloud</dt>
<dd><span class="tag">Azure Container Apps</span><span class="tag">Bicep</span><span class="tag">Docker</span><span class="tag">GitHub Actions</span><span class="tag">OpenTelemetry</span><span class="tag">Sentry</span></dd>
<dt>AI</dt>
<dd><span class="tag">MCP servers</span><span class="tag">Claude Code</span><span class="tag">OpenAI API</span><span class="tag">embeddings</span><span class="tag">RAG</span><span class="tag">pgvector</span></dd>
<dt>Testing</dt>
<dd><span class="tag">Vitest</span><span class="tag">Jest</span><span class="tag">Playwright</span><span class="tag">contract tests</span></dd>
</dl>
</div>
</section>
</main>
<section class="contact" id="contact">
<div class="wrap">
<p class="kicker">Contact</p>
<h2>Building something? Let's talk.</h2>
<p>
Gdańsk, Poland. Open to remote worldwide or hybrid in Gdańsk, employment or B2B. Ukrainian, Russian,
English (B2), Polish (A2).
</p>
<div class="cta">
<button class="btn primary" type="button" id="copy" data-email="syn.max.13@gmail.com">
<span id="copy-label">syn.max.13@gmail.com</span>
</button>
<a class="btn" href="cv/">CV</a>
<a class="btn" href="https://www.linkedin.com/in/devmaxxxx/">LinkedIn</a>
<a class="btn" href="https://github.com/devmaxxx">GitHub</a>
</div>
<footer>
<span>© 2026 Maksym Synenko</span>
<span>MSc Computer Science · Kharkiv Aviation Institute</span>
</footer>
</div>
</section>
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