Development of firmware for STM, Texas Instrument, Dialog Semiconductor, Sama5D, Raspberry, Samsung Artik, Cortex M0 +, Cortex M3, Cortex M4, Cortex R4, Cortex Ax. RTOS. Work with wireless technologies Bluetooth, ZigBee, 6LowPan, OpenThread, BLE Mesh, WiFi. Development of PCB Design. Work with different sensors and protocols. C++ GUI QT. IoT Technologies. Distributed Version Control System(GitHub, Bitbucket).