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C/C++ senior embedded developer. Work in Linux user space and kernel space. Worked in Amazon (Ring). Have rich experience in TCP/IP, video/audio processing and low level interfaces (i2c, spi, uart). Also have experience in reverse engineering of commercial devices based on stm32. Also have experience with implementing face recognition models on embedded devices

C programming assembly, binary analysis, reverse engineering security research, exploit development Linux/Android kernel, device drivers, boot loaders, firmware Linux/BSD administration

Overview Senior engineer with 20+ years of hands-on software development experience, including 10+ years in mobile. My main focus is iOS, with additional hands-on work across Android, frontend, backend, desktop systems, and performance-critical code. I work both manually and through AI-assisted development workflows. I use AI to speed up specification, planning, implementation, and iteration, but I stay fully hands-on when architecture, code quality, reliability, legacy code, or low-level control matter. I help build and improve real products across the full delivery chain: iOS apps in Swift / SwiftUI, plus legacy Objective-C / UIKit codebases Android development and cross-platform product work Frontend interfaces and production web UI Backend APIs, integrations, Firebase, REST, WebSockets, and supporting services AI-powered features such as ChatGPT integrations, OCR, image recognition, and on-device ML BLE / hardware integrations, including ESP32 / Arduino-based devices C/C++ components for performance-critical and system-level work My focus is always the same: clean code, reliable architecture, complete functionality, and production-ready delivery across blurred platform boundaries.

Senior Software Engineer and Systems Architect with 15+ years of hands-on experience in commercial development. My core expertise spans native software, microcontroller firmware, and electronic hardware. For the past 10 years, I have been helping my Upwork clients create new products from scratch and implement new features in existing software and hardware products. ■ Embedded Systems and Firmware ▪ Core experience: - Complex business logic & advanced control algorithms - Distributed control systems, machine networking (M2M) - High-performance / low-latency control - Secure, reliable, real-time interprocess communication (IPC) • Typical stack: - C, C++ (C++11/17), STL (except that needs heap memory allocation) - IAR for ARM, Keil + ARM/Clang, GCC for ARM, STM32Cube Tools - ThreadX RTOS (preferred), FreeRTOS, mbed, mbedTLS - No HAL from STM32 in production firmware ■ Native Desktop Applications and C++ Backend Software • Specialization: - High-performance GUI applications based on the Qt Framework (QtWidgets) - Console applications (CLI - command-line interface) - Standalone applications (no GUI or command-line interface) - Windows services and system applications - Any of the above combined into a complex via interprocess communication (IPC) • Typical stack: - C++11/23, STL, Qt6, Boost, ICU, rich own codebase - Microsoft Visual Studio, Microsoft Visual Studio Code - SQL DBMS: Oracle, Postgres, SQLite, MySQL, MS-SQL ● Other - Strong focus on design quality, reliability, and maintainability - Recent domains: IoT, AgTech, Automotive, Manufacturing, Defense, Energy - Recent tech: LoRa, GSM, LTE, LTE-M, Ethernet, RS-485, Modbus, CAN, CAN FD - Recent STM32 MCUs: STM32H7 (single/dual-core), STM32F4, STM32L4, STM32G4 Keywords: C++ C Multithreading IPC Qt Framework Socket IP TCP UDP PPP SSL TLS PLC SCADA MCU Microcontroler STM32 RTOS FreeRTOS ThreadX AVR UART USART CAN LIN Modbus Ethernet SPI I2C DMA RS-232 RS-485 DMA Sensor 12V 24V 48V 5V 3V 3V3 Drone FPV UAV UGV ESC Ardupilot Betaflight Pixhawk PX4 LRS ELRS S.BUS SBUS CRSF Crossfire Radio GSM SMS LTE LTE-M GPS GNSS LoRa Serial Port FTDI FT232 OGG OPUS Vorbis Speex WAV WinAPI WinSock mbed mbedtls Serialization AES DES 3DES GOST RFID BLDC WinUSB USB CDC HID DSP

I am an experienced programmer. I have delivered over 200 projects, and I would be happy to assist you. FREE PROJECT VALUATION I support small and large projects. Provide a detailed description of your requirements. I will find a suitable solution. MY PORTFOLIO ON YOUTUBE youtube.com/playlist?list=PL6ZCpobLtKdFF86ku-VHp0ws2SMa5Dy86 MY FIELDS OF EXPERTISE: - PHP, - C, - C++, - C#, - Java, - Python, - JavaScript, - HTML, - CSS, - SQL, - OpenGL, - WebGL, - Arduino. CONTACT Each project is valued individually. Send your requirements today using upwork.com I am ready to discuss your project and help you succeed. Looking forward to working with you, Lucas

I am a software architect & developer with over 18 years of experience. I specialize in designing, developing and connecting various systems and technologies together, starting from embedded systems, through web, mobile and desktop applications, ending on backend (server-side) software. I'm also system administrator and a Linux-geek. Feel free to contact me if you have any work to do! Especially C++/C/Python/C#/Linux related. You can find much more information on my website. I also encourage you to check my GitHub profile.