I read your requirements, i have lots experience in Arduino platform, I had done so many projects on Arduino.
Sensors used: IR, PIR, Ultrasonic, MQ sensors, RFID, fingerprint, GPS, GSM Accelerometer Gyroscope
I can interface any sensors and modules with Arduino and program it.
Software: Embedded C, Python
Chipset:8051,PIC, ATMEL, ARM
Board: 8051,Arduino, Raspberry pi, Qualcomm Snapdragon 820based etc....