Alexander Heinrich
Senior Frontend-Entwickler at Digital Office 24 GmbH
Sandbach, Hesse, Germany
Summary
🤩
Rockstar🎓
Top SchoolAlexander Heinrich is a Senior Frontend-Entwickler with 11 years of hands-on experience building polished user interfaces and cross-platform mobile features, currently based in Sandbach, Hesse. He blends frontend craftsmanship with security-minded engineering—holding an M.Sc.-level background in IT security and active as an IT-Sec researcher at SEEMOO. Alexander has entrepreneurial experience as a co-founder/CEO and owner of tech ventures, giving him product intuition alongside execution skills. His open-source work includes significant contributions to high-profile projects like AirGuard and OpenHaystack, where he shipped Android UI/UX improvements and ESP32 firmware to extend Apple's Find My ecosystem. He is comfortable across the stack and embedded space, having optimized Bluetooth advertising for power efficiency while also refining frontend flows and permission handling. That mix of security research, embedded systems know-how, and frontend product polish makes him adept at turning complex, privacy-sensitive features into usable products.
11 years of coding experience
12 years of employment as a software developer
Technischen Universität Darmstadt
Stackoverflow
2,004reputation
319kreached
21answers
23questions
Github Skills (31)
kotlin10
firmware10
user-interface10
android-development10
sys10
esp3210
embedded10
macos10
mobile-development9
ios9
ux-design9
android-sdk9
android9
mobile9
user-experience9
Programming languages (14)
Github contributions (5)
seemoo-lab/AirGuard
Jul 2021 - Dec 2022
Protect yourself from being tracked 🌍 by AirTags 🏷 and Find My accessories 📍
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:12 releases, 4 reviews, 137 commits in 1 year 4 months
Contributions summary:Alexander primarily contributed to the Android application's UI and user experience, adding and modifying components for onboarding and device tracking features. They implemented new UI elements, such as a background location fragment, with associated alerts, and updated the permission handling flow. Additionally, the user made changes to the device list view and map view, focusing on user interaction.
protectaccessories
seemoo-lab/openhaystack
Mar 2021 - Jun 2022
Build your own 'AirTags' 🏷 today! Framework for tracking personal Bluetooth devices via Apple's massive Find My network.
Role in this project:Full-stack Developer & Embedded Systems Engineer
Full-stack Developer & Embedded Systems EngineerContributions:1 release, 5 reviews, 47 commits in 1 year 3 months
Contributions summary:Alexander primarily contributed to the OpenHaystack project by integrating support for ESP32 microcontrollers. They developed firmware for the ESP32 platform, including the necessary code for Bluetooth advertising. Furthermore, they modified the OpenHaystack application to incorporate the ESP32 firmware and deployed the Bluetooth advertisements. Additionally, the user made optimizations, such as reducing the advertising frequency to conserve power for the ESP32 and NRF firmwares. They also worked on front-end optimizations.
bluetooth-devicesbluetoothblebluetooth-low-energytracking
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