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54                <a href="/">Blog</a>
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68            <h1>Daniel Opitz - Blog</h1>
69            <p>Developer, Trainer, Open Source Contributor</p>
70        </div>
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72
73    <main id="content" class="container-wide" role="main">
74        <h1 id="about-me">About me</h1>
75
76<p>Hello, my name is Daniel Opitz.</p>
77
78<p>I live in Switzerland and I create scalable web and IoT solutions with a strong focus on software architecture, 
79clean code, and long-term maintainability.</p>
80
81<p>In my spare time, I contribute to open-source projects and write blog posts about 
82software development, architecture, and modern programming practices.</p>
83
84<h2 id="skills">Skills</h2>
85
86<ul>
87  <li>C#, Java, PHP, JavaScript</li>
88  <li>PostgreSQL, MySQL, MariaDB, MS SQL, Oracle, SQLite, InterSystems Caché, Memcached, Redis, RabbitMQ</li>
89  <li>HTML, CSS, Bootstrap</li>
90  <li>.NET, Javalin, Slim Framework, CakePHP, Symfony</li>
91  <li>RESTful, SOAP, XML, JSON</li>
92  <li>SOLID, DDD, Clean Code, Clean Architecture</li>
93  <li>Windows, Linux, Cloud, Network, Web Security</li>
94</ul>
95
96<h2 id="videos">Videos</h2>
97
98<ul>
99  <li><a href="https://www.youtube.com/@DanielOpitz">YouTube Channel</a></li>
100</ul>
101
102<h2 id="publications">Publications</h2>
103
104<ul>
105  <li><a href="https://ko-fi.com/s/5f182b4b22">Slim 4 eBook Vol. 1</a></li>
106  <li><a href="https://ko-fi.com/s/e592c10b5f">Slim 4 eBook Vol. 2</a></li>
107  <li><a href="https://ko-fi.com/s/3698cf30f3">Slim 4 eBook Vol. 3</a></li>
108  <li><a href="https://odan.github.io/2020/05/20/slim4-php-magazin-420.html">Das PHP Micro-Framework Slim 4</a> (PHP Magazin Ausgabe 4.20)</li>
109  <li><a href="https://www.programmez.com/magazine/article/la-decouverte-de-slim-4">À la découverte de Slim 4</a> (Programmez!)</li>
110</ul>
111
112<h2 id="interviews">Interviews</h2>
113
114<ul>
115  <li><a href="https://entwickler.de/online/php/php-microframework-slim-579928772.html">PHP Microframework Slim auch für größere Anwendungen geeignet</a></li>
116</ul>
117
118<h2 id="my-projects">My projects</h2>
119
120<ul>
121  <li><a href="https://github.com/odan/slim4-skeleton">odan/slim4-skeleton</a> A Slim 4 skeleton for apache</li>
122  <li><a href="https://github.com/selective-php">Selective PHP</a> A collection of awesome PHP packages</li>
123  <li><a href="https://odan.github.io/learn-php/">Learn modern PHP</a> A curated list of resources for PHP</li>
124  <li><a href="https://github.com/odan?tab=repositories">All projects</a></li>
125</ul>
126
127<h2 id="open-source-contributions">Open Source Contributions</h2>
128
129<ul>
130  <li><a href="https://www.slimframework.com/">Slim Framework</a> A PHP micro framework</li>
131  <li><a href="https://cakephp.org/">CakePHP</a> A rapid development framework for PHP</li>
132  <li><a href="https://github.com/cakephp/chronos">Chronos</a> A standalone DateTime library</li>
133</ul>
134
135<h2 id="conferences">Conferences</h2>
136
137<ul>
138  <li><a href="https://phpconference.com/">International PHP Conference</a> (2015-2023)</li>
139  <li><a href="https://basta.net/mainz/">BASTA! .NET, Windows &amp; Web Development - Online</a> (2021)</li>
140  <li><a href="https://phpconference.com/">International PHP Conference - Munich</a> (2013)</li>
141</ul>
142
143<p><a id="contact"></a></p>
144
145<h2 id="contact">Contact</h2>
146
147<ul>
148  <li><a href="mailto:[email protected]">E-Mail</a></li>
149  <li><a href="https://x.com/dopitz">X</a></li>
150  <li><a href="https://github.com/odan">GitHub</a></li>
151  <li><a href="https://www.linkedin.com/in/daniel-opitz-493816111">LinkedIn</a></li>
152  <li><a href="https://www.xing.com/profile/Daniel_Opitz9">Xing</a></li>
153</ul>
154
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157            &copy; 2026 Daniel Opitz
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160            &nbsp;|&nbsp; <a href="https://www.linkedin.com/in/daniel-opitz-493816111" target="_blank">LinkedIn</a>
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