Patrick A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

⭐⭐⭐⭐⭐ Top Rated Freelancer | 100% Job Success | 5-Star Client Feedback Embedded Systems | Embedded Linux & Android Systems Engineer | Linux · Yocto · Qt/QML · AOSP · Android Automotive · Android Development · ADB Automation · C/C++ · Python · Java · Kotlin If you're building a product that runs Linux or Android under the hood - from an embedded device to an infotainment system - and you need someone who understands every layer from the hardware up, I can help you ship it. I specialize in the space most engineers avoid: the gap between hardware and the software stack. That means I can trace a boot failure to a kernel driver, customize an AOSP build from scratch, fix a VHAL service that drops vehicle signals, or write Python tooling that replaces hours of manual ADB work across a fleet of devices. What I work on: - Embedded Linux - Yocto, BSP bring-up, driver development, cross-compilation - AOSP builds and system-level customization (permissions, overlays, HALs, system services) - Android Automotive OS - VHAL, AIDL interfaces, CarService integration - Python ADB automation - multi-device control, test frameworks, CI scripting - Android app development in Kotlin/Java when the project needs it - Boot, performance, and crash debugging across hardware and software layers - Docker environments for reproducible builds and clean dev workflows Why this matters for your project: Most engineers are strong at one layer - app, firmware, or Linux. I work across all of them. That means I catch integration bugs that fall between teams, and I can translate clearly between hardware and software sides so nothing gets lost. Recent work includes Android Automotive infotainment systems, AOSP-based product customization, and Python automation tools for multi-device QA workflows. If you're dealing with a system-level issue, need an embedded Linux or Android build customized, or want automation that actually works at scale - let's talk.