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@{
ViewData["Title"] = "Joshua Ferrer — Backend Engineer";
}
<header class="cv-hero">
<div class="cv-hero__inner">
<div class="cv-hero__main">
<p class="cv-kicker">Backend · Low-level · Architecture</p>
<h1 class="cv-title">Joshua Ferrer</h1>
<p class="cv-subtitle">Backend Engineer | IT Architecture</p>
<p class="cv-summary">
I love low-level programming and building systems from scratch. For me, this is the best way to learn:
understanding memory, performance, and execution flow directly instead of relying on abstractions.
My main focus is backend engineering with a strong performance mindset.
</p>
<div class="cv-actions">
<a class="btn btn-primary cv-btn" href="#contact">Contact</a>
<a class="btn btn-outline-secondary cv-btn" href="#skills">Skills</a>
<a class="btn btn-outline-secondary cv-btn" href="#experience">Experience</a>
</div>
<ul class="cv-meta">
<li><span class="cv-meta__label">Location</span><span class="cv-meta__value">Tokyo</span></li>
<li><span class="cv-meta__label">Domain</span><span class="cv-meta__value">low-level-guy.com</span></li>
<li><span class="cv-meta__label">Focus</span><span class="cv-meta__value">Backend · Performance · Architecture</span></li>
</ul>
</div>
<aside class="cv-hero__side">
<div class="cv-card">
<h2 class="cv-card__title">Core strengths</h2>
<ul class="cv-list">
<li>Software engineering (low-level & backend)</li>
<li>Performance-oriented design</li>
<li>Japanese business communication</li>
</ul>
</div>
<div class="cv-card">
<h2 class="cv-card__title">Links</h2>
<div class="cv-links">
<a class="cv-link" href="https://low-level-guy.com">Website</a>
<a class="cv-link" href="https://github.com/josufh">GitHub</a>
</div>
</div>
</aside>
</div>
</header>
<main class="cv-content">
<section class="cv-section" id="about">
<h2 class="cv-h2">About me</h2>
<div class="cv-card">
<p class="cv-muted">
I specialize in backend systems and low-level programming. I enjoy avoiding unnecessary dependencies and
building core functionality myself, as it gives a deeper understanding of how software actually works.
</p>
<p class="cv-muted">
My daily work involves backend development, architecture design, and cloud-based systems, with a strong
focus on reliability and maintainability.
</p>
</div>
</section>
<section class="cv-section" id="experience">
<h2 class="cv-h2">Experience</h2>
<div class="cv-stack">
<article class="cv-item">
<div class="cv-item__top">
<h3 class="cv-h3">株式会社日本教育クリエイト — ITソリューション事業部</h3>
<span class="cv-date">2024/09 — Present</span>
</div>
<p class="cv-muted">
Backend Engineer. Internal business systems, infrastructure integration, and architectural design.
</p>
<ul class="cv-bullets">
<li>Design and implementation of backend services using .NET / ASP.NET.</li>
<li>Cloud integrations across Azure, AWS, Google Cloud, and Oracle Cloud.</li>
<li>Ownership of deployment workflows using Docker and Linux-based environments.</li>
<li>System-level problem solving with performance and reliability as primary goals.</li>
</ul>
<div class="cv-tags">
<span class="cv-tag">C#</span>
<span class="cv-tag">ASP.NET</span>
<span class="cv-tag">Docker</span>
<span class="cv-tag">Linux</span>
</div>
</article>
</div>
</section>
<section class="cv-section" id="skills">
<h2 class="cv-h2">Skills</h2>
<div class="cv-grid2">
<div class="cv-card">
<h3 class="cv-h3">Technical</h3>
<ul class="cv-list">
<li><strong>Languages:</strong> C, C# (main), others as needed</li>
<li><strong>Frameworks:</strong> .NET, ASP.NET</li>
<li><strong>Cloud:</strong> Google Cloud, AWS, Azure, Oracle</li>
<li><strong>OS:</strong> Arch Linux, Ubuntu, Debian (Windows via WSL)</li>
<li><strong>Tools:</strong> VS Code, Vim</li>
</ul>
</div>
<div class="cv-card">
<h3 class="cv-h3">Languages</h3>
<ul class="cv-list">
<li>English — native</li>
<li>Spanish — native</li>
<li>Catalan — native</li>
<li>Japanese — fluent / business (JLPT N1)</li>
<li>Chinese — beginner (HSK3)</li>
</ul>
</div>
</div>
</section>
<section class="cv-section" id="education">
<h2 class="cv-h2">Education</h2>
<div class="cv-card">
<strong>IT Business</strong><br />
東京ビジネス外語カレッジ(池袋)<br />
<span class="cv-muted">Senmon Gakkou</span>
</div>
</section>
<section class="cv-section" id="contact">
<h2 class="cv-h2">Contact</h2>
<div class="cv-card">
<div class="cv-contact">
<div>
<div class="cv-muted small">Email</div>
<div><a class="cv-link" href="mailto:josuferrer@outlook.com">josuferrer@outlook.com</a></div>
</div>
<div>
<div class="cv-muted small">Website</div>
<div><a class="cv-link" href="https://low-level-guy.com">low-level-guy.com</a></div>
</div>
<div>
<div class="cv-muted small">GitHub</div>
<div><a class="cv-link" href="https://github.com/josufh">github.com/josufh</a></div>
</div>
</div>
</div>
</section>
</main>
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:root {
/* Light theme defaults */
--cv-bg: #0b1220;
--cv-bg2: #060a13;
--cv-accent: #4f7cff;
--cv-accent2: #00ffd1;
--cv-text: rgba(255, 255, 255, 0.92);
--cv-muted: rgba(255, 255, 255, 0.70);
--cv-muted2: rgba(255, 255, 255, 0.55);
--cv-border: rgba(255, 255, 255, 0.12);
/* “Paper” surfaces (used in light mode content area) */
--cv-paper: #ffffff;
--cv-paper-text: rgba(0, 0, 0, 0.88);
--cv-paper-muted: rgba(0, 0, 0, 0.62);
--cv-paper-border: rgba(0, 0, 0, 0.10);
--cv-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
--cv-radius: 18px;
}
/* Make anchor jumps feel better */
html {
scroll-behavior: smooth;
}
/* ---------------- Hero ---------------- */
.cv-hero {
background:
radial-gradient(1200px 600px at 10% 10%, rgba(79,124,255,.30), transparent 60%),
radial-gradient(900px 500px at 80% 20%, rgba(0,255,209,.12), transparent 60%),
linear-gradient(180deg, var(--cv-bg), var(--cv-bg2));
border-bottom: 1px solid var(--cv-border);
padding: 3.75rem 0 2.75rem 0;
}
.cv-hero__inner {
max-width: 1140px;
margin: 0 auto;
padding: 0 1rem;
display: grid;
grid-template-columns: 1.35fr 0.95fr;
gap: 1.25rem;
align-items: start;
}
.cv-hero__main {
min-width: 0;
}
.cv-kicker {
margin: 0 0 0.85rem 0;
color: var(--cv-muted2);
font-size: 0.85rem;
letter-spacing: 0.10em;
text-transform: uppercase;
}
.cv-title {
margin: 0;
color: var(--cv-text);
font-weight: 750;
line-height: 1.05;
letter-spacing: -0.02em;
}
.cv-subtitle {
margin: 0.75rem 0 1.25rem 0;
color: var(--cv-muted);
font-size: 1.1rem;
}
.cv-summary {
margin: 0 0 1.5rem 0;
color: var(--cv-muted);
max-width: 70ch;
/* Technical feel without being gimmicky */
font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
font-size: 0.95rem;
line-height: 1.55;
}
.cv-actions {
display: flex;
flex-wrap: wrap;
gap: 0.6rem;
margin-bottom: 1.25rem;
}
.cv-btn {
border-radius: 999px;
padding: 0.65rem 1.1rem;
}
.cv-meta {
list-style: none;
padding: 0;
margin: 0;
display: grid;
gap: 0.5rem;
}
.cv-meta li {
display: flex;
gap: 0.75rem;
align-items: baseline;
}
.cv-meta__label {
min-width: 86px;
color: var(--cv-muted2);
font-size: 0.9rem;
}
.cv-meta__value {
color: var(--cv-text);
font-size: 0.95rem;
}
/* ---------------- Side cards (hero) ---------------- */
.cv-hero__side {
display: grid;
gap: 1rem;
}
.cv-card {
background: var(--cv-paper);
color: var(--cv-paper-text);
border: 1px solid var(--cv-paper-border);
border-radius: var(--cv-radius);
padding: 1.25rem;
box-shadow: var(--cv-shadow);
}
.cv-card__title {
margin: 0 0 0.5rem 0;
font-size: 1rem;
font-weight: 600;
}
.cv-links {
display: flex;
gap: 0.75rem;
flex-wrap: wrap;
}
.cv-link {
color: var(--cv-accent);
text-decoration: none;
}
.cv-link:hover {
text-decoration: underline;
}
/* ---------------- Main content ---------------- */
.cv-content {
max-width: 1140px;
margin: 0 auto;
padding: 2.25rem 1rem 3.5rem 1rem;
}
.cv-section {
margin: 0 0 2.25rem 0;
}
.cv-h2 {
margin: 0 0 0.75rem 0;
font-weight: 650;
letter-spacing: -0.01em;
}
.cv-h3 {
margin: 0 0 0.25rem 0;
font-weight: 600;
}
.cv-muted {
color: var(--cv-paper-muted);
}
/* ---------------- Layout helpers ---------------- */
.cv-grid2 {
display: grid;
gap: 1rem;
grid-template-columns: repeat(2, 1fr);
}
.cv-grid3 {
display: grid;
gap: 1rem;
grid-template-columns: repeat(3, 1fr);
}
.cv-stack {
display: grid;
gap: 1rem;
}
/* ---------------- Items (experience/projects blocks) ---------------- */
.cv-item {
background: var(--cv-paper);
border: 1px solid var(--cv-paper-border);
border-radius: var(--cv-radius);
padding: 1.25rem;
box-shadow: var(--cv-shadow);
color: var(--cv-paper-text);
}
.cv-item__top {
display: flex;
justify-content: space-between;
align-items: baseline;
gap: 0.75rem;
flex-wrap: wrap;
}
.cv-date {
color: rgba(0, 0, 0, 0.55);
font-size: 0.95rem;
}
/* Lists */
.cv-list {
margin: 0.5rem 0 0 0;
padding-left: 1.2rem;
}
.cv-list li {
margin-bottom: 0.25rem;
}
.cv-bullets {
margin: 0.6rem 0 0 0;
padding-left: 1.15rem;
}
.cv-bullets li {
margin-bottom: 0.35rem;
}
/* Tags */
.cv-tags {
margin-top: 0.75rem;
display: flex;
gap: 0.5rem;
flex-wrap: wrap;
}
.cv-tag {
display: inline-flex;
align-items: center;
border: 1px solid rgba(0, 0, 0, 0.12);
background: rgba(0, 0, 0, 0.03);
padding: 0.25rem 0.6rem;
border-radius: 999px;
font-size: 0.85rem;
color: rgba(0, 0, 0, 0.70);
}
/* ---------------- Contact grid ---------------- */
.cv-contact {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1rem;
}
/* ---------------- Responsive ---------------- */
@media (max-width: 992px) {
.cv-hero__inner {
grid-template-columns: 1fr;
}
.cv-grid2 {
grid-template-columns: 1fr;
}
.cv-grid3 {
grid-template-columns: 1fr;
}
.cv-contact {
grid-template-columns: 1fr;
}
}
/* ---------------- Dark mode for main content ----------------
The hero is already dark; this flips the “paper cards” to dark surfaces.
*/
@media (prefers-color-scheme: dark) {
:root {
--cv-paper: #0f1a30;
--cv-paper-text: rgba(255, 255, 255, 0.92);
--cv-paper-muted: rgba(255, 255, 255, 0.72);
--cv-paper-border: rgba(255, 255, 255, 0.12);
--cv-shadow: none;
}
.cv-date {
color: rgba(255, 255, 255, 0.55);
}
.cv-tag {
border: 1px solid rgba(255, 255, 255, 0.12);
background: rgba(255, 255, 255, 0.06);
color: rgba(255, 255, 255, 0.72);
}
}
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@{
ViewData["Title"] = "Privacy Policy";
}
<h1>@ViewData["Title"]</h1>
<p>Use this page to detail your site's privacy policy.</p>
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@model ErrorViewModel
@{
ViewData["Title"] = "Error";
}
<h1 class="text-danger">Error.</h1>
<h2 class="text-danger">An error occurred while processing your request.</h2>
@if (Model.ShowRequestId)
{
<p>
<strong>Request ID:</strong> <code>@Model.RequestId</code>
</p>
}
<h3>Development Mode</h3>
<p>
Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
</p>
<p>
<strong>The Development environment shouldn't be enabled for deployed applications.</strong>
It can result in displaying sensitive information from exceptions to end users.
For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
and restarting the app.
</p>
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - Low Level Guy</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />
<link rel="stylesheet" href="~/LowLevelGuyCom.styles.css" asp-append-version="true" />
</head>
<body>
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div class="container-fluid">
<a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index">LowLevelGuyCom</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</li>
</ul>
</div>
</div>
</nav>
</header>
<div class="container">
<main role="main" class="pb-3">
@RenderBody()
</main>
</div>
<footer class="border-top footer text-muted">
<div class="container">
&copy; 2026 - LowLevelGuyCom - <a asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</div>
</footer>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="~/js/site.js" asp-append-version="true"></script>
@await RenderSectionAsync("Scripts", required: false)
</body>
</html>
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/* Please see documentation at https://learn.microsoft.com/aspnet/core/client-side/bundling-and-minification
for details on configuring this project to bundle and minify static web assets. */
a.navbar-brand {
white-space: normal;
text-align: center;
word-break: break-all;
}
a {
color: #0077cc;
}
.btn-primary {
color: #fff;
background-color: #1b6ec2;
border-color: #1861ac;
}
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
color: #fff;
background-color: #1b6ec2;
border-color: #1861ac;
}
.border-top {
border-top: 1px solid #e5e5e5;
}
.border-bottom {
border-bottom: 1px solid #e5e5e5;
}
.box-shadow {
box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
}
button.accept-policy {
font-size: 1rem;
line-height: inherit;
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
white-space: nowrap;
line-height: 60px;
}
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<script src="~/lib/jquery-validation/dist/jquery.validate.min.js"></script>
<script src="~/lib/jquery-validation-unobtrusive/jquery.validate.unobtrusive.min.js"></script>
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@using LowLevelGuyCom
@using LowLevelGuyCom.Models
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
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@{
Layout = "_Layout";
}