Senior Firmware & Embedded Systems Engineer

Edison dos Santos is a highly skilled Firmware, Embedded Systems, and On-Device ML expert based in Barcelona, Spain. He is an EU/PT citizen, open to remote work or relocation. His expertise includes building end-to-end IoT monitoring systems with ESP32 firmware and Django cloud backends, implementing secure communication protocols (SPI, Modbus-RTU, ECDSA, MQTT-over-WSS/TLS), and managing Docker + PostgreSQL infrastructure. On the ML side, he has made significant contributions to Sherpa-ONNX, including integrating Meta's Omnilingual v2 and developing the first 4-bit block-wise quantization pipeline, reducing model size by 40%. He has also optimized AI inference to run 2x faster on budget mobile chips through low-level memory efficiency techniques. Edison demonstrates strong security instincts, evidenced by his Top 4 ranking at Talent Arena CTF, his ability to analyze SIMD-obfuscated Rust binaries using Ghidra/gdb, and his global #427 ranking on Codewars (top 0.1%). He has also successfully reverse-engineered and patched a Windows binary to fix a null pointer dereference, a problem others classified as unfixable. He is proficient in technologies such as ESP32 (ESP-IDF), C/C++, Rust, Python/Django, AI Optimization (LiteRT, ONNX), and Reverse Engineering (Ghidra, gdb).