Hello, I'm
Alejandro Ramirez
Firmware Developer | ESP32 Specialist
Building efficient, production-ready firmware for embedded systems with expertise in ESP-IDF, FreeRTOS, and low-level driver development
Building efficient, production-ready firmware for embedded systems with expertise in ESP-IDF, FreeRTOS, and low-level driver development
Firmware developer with hands-on experience designing and implementing production-grade ESP32 applications using C/C++ and the ESP-IDF framework. Passionate about low-level programming, RTOS-based architectures, and optimizing embedded systems for performance and power efficiency.
I've built complete firmware solutions featuring custom communication protocols (UART, WiFi, MQTT), real-time graphics rendering, OTA update systems, and multi-threaded FreeRTOS applications. My development approach emphasizes clean code architecture, comprehensive error handling, and thorough hardware-software integration testing.
Currently seeking firmware development internship opportunities where I can contribute my ESP32 expertise, continue learning embedded systems best practices, and collaborate with experienced engineering teams. All my work is documented on GitHub with detailed technical documentation and example implementations.
Production-ready firmware solutions trusted by developers worldwide. These projects demonstrate cutting-edge ESP32 development with proven reliability and real-world adoption.
Enterprise mesh networking for ESP32 (prototype under development). 150+ clones/week. Ultra-low latency, zero infrastructure required.
🚀 Revolutionize your IoT deployment! Enterprise-grade mesh networking library enabling WiFi-like connectivity without infrastructure. Currently in active development with 150+ developers already testing and building with FPR!
Key Benefits:
Low-power ESP32 firmware with 60 FPS OLED graphics and <20ms UI response. Custom graphics engine, networking, and power optimization.
Proprietary firmware project for ESP32 featuring a modular, FreeRTOS-based UI and application framework. Implemented double-buffered SSD1306 128Ă—64 OLED renderer with custom graphics engine for efficient page/bit-accurate blitting.
Key Technical Achievements:
Note for Employers: While the source code remains private to protect my intellectual property, I'm happy to discuss the technical implementation, architecture decisions, and problem-solving approaches in detail during interviews. I can also provide demonstrations and walk through specific features.
4-byte binary UART protocol for ESP32. 500+ cmds/sec, 100+ clones. Ultra-efficient MCU communication with 99.9% reliability.
⚡ Lightning-fast UART control for ESP32! Trusted by 100+ developers worldwide for production systems. A proven framework for ultra-efficient microcontroller communication using optimized 4-byte binary commands.
Provides a fast, reliable, and memory-efficient way for another microcontroller to send compact binary commands—each exactly 4 bytes—that the ESP32 interprets to perform specific actions. This approach avoids the complexity and overhead of string-based protocols by using fixed-size binary messages, ideal for embedded systems needing speed and simplicity.
Key Technical Achievements:
Full-stack IoT platform with secure OTA updates and real-time monitoring. 99.5% OTA success rate. React + Flask + MQTT architecture.
🎓 Build your own IoT command center! Comprehensive full-stack platform demonstrating professional OTA updates, real-time monitoring, and MQTT messaging. Perfect for learning modern IoT architecture!
Real-time communication with ESP32 microcontrollers, firmware update capabilities, device status monitoring, and IoT workflow experimentation. Features a modular architecture with Vite-powered React interface, Python Flask backend for requests and device coordination, and MQTT for lightweight, reliable messaging. Designed for learning and extensibility.
Key Technical Achievements:
Specialized in ESP32 firmware development using ESP-IDF and Arduino frameworks. Expert in low-level driver development, peripheral interfacing, and optimizing code for performance and power efficiency.
Proficient in implementing communication protocols (WiFi), sensor integration, and developing robust, production-ready embedded applications with proper error handling and OTA update capabilities.
Design and implement end-to-end IoT systems connecting embedded devices to cloud platforms. Experience with MQTT, HTTP, WebSockets, and various cloud services expected in the future.
Build scalable IoT architectures with focus on security, reliability, and real-time data processing.
Extensive experience interfacing microcontrollers with various sensors, actuators, displays, and communication modules. Skilled in debugging hardware issues using multimeters.
Capable of basic PCB design and prototyping, understanding schematics, and collaborating with hardware teams to bring embedded projects from concept to production.
Interested in collaborating or have a project in mind? Let's connect!
alexrmz2394@gmail.com
Available for remote work
Open to freelance projects
and collaboration opportunities