Lumysi is a US-based wearable technology startup developing a jewelry-inspired health and fitness bracelet.

Our screenless wearable continuously tracks health, activity, sleep, recovery, and women’s health metrics while maintaining the appearance and comfort of a premium accessory.

The product combines embedded electronics, biometric sensors, ultra-low-power firmware, Bluetooth connectivity, mechanical components, interchangeable straps, and a mobile application that transforms health data into personalized insights.

We are expanding our engineering team in Monterrey and are looking for an experienced engineer who can contribute across embedded development, electronic hardware, product validation, and manufacturing.

The Role

As a Senior Hardware & Embedded Systems Engineer, you will help take Lumysi from advanced prototypes into reliable, scalable production.

This is not a firmware-only position. You will work across electronics, embedded software, supplier coordination, prototype development, product testing, and manufacturing execution.





You will collaborate directly with our internal engineering team, industrial designers, component suppliers, PCB manufacturers, assembly partners, and contract manufacturers.

The idóneo candidate has previously worked with external manufacturing suppliers and understands what is required to move a connected hardware product from prototype through engineering validation, pilot production, and mass manufacturing.

Responsabilities
- Develop and maintain embedded firmware in C and C++.
- Work with Nordic Semiconductor and Espressif microcontrollers.
- Develop low-level drivers and integrate sensors and peripherals.
- Implement communication protocols including I2C, SPI, and UART.
- Optimize firmware for ultra-low-power operation and battery life.
- Work with Bluetooth Low Energy connectivity.
- Debug hardware and firmware integration issues.
- Support prototype testing, validation, and firmware releases.
- Collaborate with Migu

📌 Senior Hardware (Monterrey)
🏢 Lumysi
📍 Monterrey