10+year experience
Backend - Node JS ,express JS,.NET core.
Front End - Angular, three.JS, Vue.JS
Mobile App - Ionic, Capacitor, Cordova, Cordova Plugins, Android, iOS
IoT and Robotics - Arduino, ESP32, ESP8266
Database - PostgreSQL, MS SQL, MY SQL, Oracle, MongoDB, SQLite, firebase
Web Servers - Internet Information Server (IIS), Apache HTTP Server, NGINX
SOCKETS - socket.io, web socket, tcp/ip, MQTT, UDP.
PROTOCOLS - DLMS protocol for energy and gas meters, cosem/HDLC protocol,485 Modbus Protocol
Others - 3D tailoring tool, IoT, BLE technology, NFC, RFID, mesh networking, hardware integration, serial communications using RS232 communication & 485, obis codes, water vending machine solutions, IVR call center, OCR technology, pl/SQL expert, database design architecture, database analysis , complete ERP solution development, Banking solutions for co-operative society and NBFC, data migrations.