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            <a href="index.html">Home</a>
            <a href="about.html">About</a>
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        <div class="main-content">
            <h1>Leonardo Held</h1>
            <p>
                Hello, I'm a systems engineer with a physics/electronics background.
            </p>
            <p>
                <code>{firstname}{lastname} [at] protonmail [dot] com</code>
            </p>
            <h2>Professional Experience</h2>

            <h3>Toradex</h3>
            <div class="job-title">Senior Software Engineer</div>
            <div class="job-period">2023 - Present</div>
            <p>
                I'm the maintainer of several repositories at Toradex, particularly within the Torizon Packages and
                Containers Team in the Software Group.

            </p>
            <ul>

                <li>Scaled infrastructure to massively build embedded production containers for end-customers, while
                    growing from two embedded platforms to six.</li>
                <li>Designed Release Engineering and CI/CD processes to minimize bugs in embedded customer applications.
                </li>
                <li>Implemented a hardware-in-the-loop <a href="https://github.com/torizon/aval">testing framework</a>
                    for devices provisioned within Torizon Cloud</li>
                <li>Debugged complex graphics, network, bootloader, kernel and performance issues on embedded devices.
                </li>
                <li>Spearheaded the initiative to always be up-to-date with the Debian project for Debian-based
                    containers with Toradex's third-party package feed.</li>
                <li>Debugged, developed, and packaged software in the standard Debian format for Embedded Devices
                    running Debian (e.g., Mesa, Weston, Chromium, TensorFlow)</li>
                <li>Introduced the use of industry-standard tools for building Debian packages and infrastructure.</li>
                <li>Wrote testing software which, together with the rebuilt build infrastructure, was able to shorten
                    the Torizon Containers project turnaround time from 9 months to zero days.</li>
                <li>Worked as Technical Expert in contact with several of companies and customers, providing webinars,
                    talks, technical business support and more.</li>
                <li>As a communicator and developer advocate, I wrote several deeply technical blogposts and presented
                    in conferences such as MiniDebConf and Embedded World.</li>
                <li>Mentored several junior developers and collaborated in several instances with FAEs, customers and
                    Technical Experts.</li>

                <li>Started innovation projects (e.g., <a href="https://github.com/torizon/marino">Marino</a>, <a
                        href="https://github.com/torizon/torizon-plugin-installer">Torizon Plugin Installer</a>)</li>
                <li>Wrote technical articles for Torizon's Engineering Blog</li>
            </ul>

            <h3>Fraunhofer-Institut für Produktionstechnologie</h3>
            <div class="job-title">Hilfswissenschaftler</div>
            <div class="job-period">2022 - 2023</div>
            At the Fraunhofer Institute I wrote my thesis on utilising Kubernetes with custom schedulers as an
            orchestrator for Embedded Devices, providing a solid foudation which was later utilised as basis for further
            research.
            <ul>
                <li>Developed a testbed using Embedded Linux Devices for custom Kubernetes schedulers</li>
                <li>Researched industrial communication protocols such as OPC-UA</li>
            </ul>

            <h3>CERTI Foundation</h3>
            <div class="job-title">Software Engineer</div>
            <div class="job-period">2021 - 2022</div>
            <ul>
                <li>Developed an Embedded Linux gateway for a classified ECG medical device</li>
                <li>Built an automated testing rig using Cucumber and Python</li>
                <li>Led the porting of a newer Linux version to an existing device in Siemens' fleet</li>
            </ul>

            <h2>Education</h2>

            <h3>Federal University of Santa Catarina (UFSC), Florianópolis, Brazil</h3>
            <div class="job-title">BSc in Electronics Engineering</div>
            <ul>
                <li>Advisor: Prof. Dr. Raimes Morais</li>
                <li>Thesis: <a
                        href="https://mobile.repositorio.ufsc.br/bitstream/handle/123456789/244953/one-true-monograph.pdf?sequence=1&isAllowed=y">An
                        architecture for context-aware deployment and monitoring of IoT applications using
                        Kubernetes</a></li>
                <li>Mix of Semiconductor and Communications Engineering with strong mathematical and physics background
                </li>
            </ul>

            <h3>Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen, Germany</h3>
            <div class="job-title">Semester as an invited visiting student</div>

            <h2>Skills</h2>
            <ul>
                <li><strong>Languages:</strong> Portuguese, English, always learning German</li>
                <li><strong>Programming Languages:</strong> Python, C++, Rust (built non-trivial systems)</li>
                <li><strong>General Software Skills:</strong> Software Architecture, Yocto, Embedded Linux, Graphics
                    Stack, Docker, virtualization strategies, security hardening for Embedded Devices, testing systems
                    with CI/CD capabilities, TDD, Jenkins, GitLab CI, GitHub Actions, U-boot, Git</li>
            </ul>

            <h2>Conference Talks</h2>
            <ul>
                <li>Embedded World Conference 2025: Lessons Learned from Automated Testing of Embedded Devices</li>
                <li>Embedded World Conference 2025: The Status of Debian for Embedded Systems</li>
                <li>Embedded World Conference 2024: Understanding SBOMs and complying with new Cybersecurity
                    Requirements</li>
                <li>MiniDebConf Belo Horizonte 2024: Embedded Systems and Open Source Software: a ridiculously fun
                    combination</li>
                <li>MiniDebConf Brasília 2023: Containers for Embedded Systems</li>
            </ul>

            <h2 id="about-technical-writing">Technical Writing</h2>
            <ul>
                <li><a href="https://torizon.github.io/blog/software-testing-the-hardware-software-interface-part-1/">Embedded
                        Software Testing: the Hardware-Software Interface (Part 1)</a></li>
                <li><a href="https://torizon.github.io/blog/software-testing-the-hardware-software-interface-part-2/">Embedded
                        Software Testing: Practical Continuous Integration with Hardware in the Loop (Part 2)</a></li>
                <li><a href="https://torizon.github.io/blog/how-does-hardware-acceleration-work-with-containers/">How
                        does hardware acceleration work with containers?</a> <span class="sidenote">(sidenote: this one
                        hit HackerNews' frontpage! I'm an avid reader, so I was quite happy.)</span></li>
                <li><a
                        href="https://torizon.github.io/blog/why-bare-metal-debian-and-raspberry-pi-os-is-not-a-good-choice-for-most-embedded-systems/">Why
                        bare-metal Debian (and Raspberry Pi OS) is not a good choice for most Embedded Systems</a></li>
            </ul>
        </div>

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            <p>Author: Leonardo Held</p>
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