OS

FreeRTOS, MicroPython, Windows 10 IoT, Android, iOS, Linux

Embedded Software

ASM (Intel, Motorola, ARM), C, C++, MicroPhyton, JavaScript

Protocols

TCP/IP, UDP, ETHERNET, HTTP, I2C, SMBus, SPI, RS232, CAN, JTAG, Modbus

Supporting Software

C#, JAVA, Python, HTML, WebAssembly

Frameworks

Node, .Net Core, JVM, AWS cloud, Google cloud

Databases

Oracle, MS SQL Server, MySQL, AWS RDS, MongoDB, and DynamoDB

Tools

Visual Studio, Atom, IntelliJ, Eclipse, Keil, Codewarrior SVN, GIT, JIRA, SNOW Wireshark, Postman, Network-Analyzer, GDB Oscilloscope, Logic Analyzer, Spectrum Analyzer, ICE, SPICE