Senior embedded firmware consulting for mission-critical IoT and industrial products. Built with tested architecture, secure OTA, and documentation your team can own.
Open-source RTOS trusted by industry
GZM Embedded Systems is a Brazilian consultancy specialized in embedded firmware for products that cannot fail. We deliver custom end-to-end solutions for companies that need quality, reliability, and full control over their firmware.
We work across every phase of the development cycle in energy, automotive, industrial, IoT, and commercial automation sectors: architecture, implementation, automated testing, production line validation, and field support.
Firmware delivered end to end. From architecture decisions to field deployment, with tested code, secure updates, and documentation your team can maintain.
Clean firmware that survives team turnover. Modular design with Zephyr, NuttX, or FreeRTOS on STM32, ESP32, nRF52, RP2040, and RISC-V.
Deploy firmware updates without bricking devices. MCUboot with RSA/ECDSA signing, AES encryption, and recovery channels over CAN, RS-485, UART, or SD Card.
Protocol stacks that work in the field. CAN-FD, CANopen, J1939, Modbus, DNP3, MDB, ISO-TP, Zigbee, and LoRa integrated and tested against real equipment.
Touchscreen UIs your field teams can use. LVGL and TouchGFX on RGB (LTDC) and SPI displays, with VNC for remote diagnostics.
Understanding the problem before writing a single line. Risks mapped, interfaces defined, partitioning decided.
Modular firmware with automated testing and reviews. Incremental merges into a working device from week one.
Production-ready code plus training and documentation. Your team owns the codebase, not the consultant.
Rebuilt the firmware powering a flow metering system for fuel distribution terminals. Two STM32H7 boards (controller + HMI), CAN-FD with ISO-TP, Modbus RTU over RS-485, and secure OTA via MCUboot across heterogeneous flash layouts. Signed with RSA, encrypted with AES. Delivered with full CI/CD setup and team training.
Recorded talks, webinars, and articles on embedded firmware, RTOS, and system architecture. All delivered in Portuguese at Embarcados community events since 2020.
Tell us what you're building. Quick email, no commitment.
