Embedded Linux Platform Engineer – IoT / Smart Hub

The company is developing its own Linux-based platform for smart hubs and IoT devices SMHUB-OS - an example of device running that platform is here: https://smlight.tech/global/smhub.
The system combines an embedded Linux core, backend services, and a web interface (frontend), providing centralized management of device networks, network configuration, radio modules, and integrations.
The architecture supports network stacks (Ethernet, Wi-Fi, 4G/LTE), OTA updates, and app installations (such as Node-RED, Zigbee2MQTT, etc.), as well as work with peripheral modules (IR transmitter and receiver, audio subsystem, buzzer, addressable LED strips, SD card, USB, UART/I2C buses, and others) and in future - cloud sync/control system.
We are looking for an engineer to participate in the development and maintenance of the SMHUB-OS core system, backend logic, and integration with the frontend (React/WebSocket).
What will you do
Develop and maintain a Linux platform for embedded devices (RISC-V SoC)
Integrate system modules (Ethernet, Wi-Fi, 4G/LTE, radio modules, GPIO, USB, Wi-Fi, IR transmitter/receiver, UART, I2C, etc.)
Configure U-Boot, rootfs, and partition logic (RAUC, read-only rootfs, user data)
Develop backend services (Python / FastAPI, possibly C/C++) for managing configuration, telemetry, and device status
Integrate system services (NetworkManager, ModemManager, WireGuard, systemd, MQTT)
Interact with the frontend via WebSocket JSON API (a dedicated frontend engineer works on this part)
Build a secure architecture with privilege separation between the web interface and system services
Implement and maintain OTA update and system recovery mechanisms
Debug drivers, startup scripts, and interfaces (UART, I²C, SPI, USB)
Prepare technical documentation and participate in system architecture design
Technologies used
Linux kernel, U-Boot
Python (FastAPI), Bash, systemd
SQLite / JSON for configurations
RAUC / OTA updates
Collaboration with ReactJS frontend
Additional experience with Zigbee2MQTT, Node-RED, Matterbridge, Z-WaveJS is a plus
Requirements
Experience with Embedded Linux / SBC (Single Board Computers, RISC-V architecture preferrable)
Understanding of Linux kernel, drivers, bootloaders, and device tree
Experience building backend services (FastAPI)
Knowledge of network stacks (Ethernet, Wi-Fi, LTE, VPN)
Ability to analyze system logs (dmesg, journalctl, strace)
Understanding of system security and privilege separation principles
Experience integrating frontend via WebSocket or REST API
Self-organization, attention to architecture and stability
English proficiency for communication with the engineering team
Preferably, experience in IoT / Smart Home / Automation
Please submit your application by this link: https://forms.gle/9L749uaUPRCLeP2n6