We will help you to make your IOT projects as per as you describe the requirement. We have a lot of experience in firmware development and PCB design of various kinds of IoT devices using ESP8266, Raspberry Pi, Arduino, WiFi, LAN, BLE module, RF module, FPGA, ARM CortexM0, M4, STM32, Atmega, PIC, MQTT, web and mobile application and several kinds of sensors.
So, we hope you are giving an opportunity to make your project.