Arduino code for project

Job ID: 33419147

Budget: £20 – £250 GBP

I need a quote for a project I'm looking at making.

I need the code writing for it. These are examples of
what I want to make. https://annoyingpcb.com And
https://www.dudeiwantthat.com/gear/gadgets/the-
eviltron.asp

The device will probably be made with a cr2032 battery and an attiny chip and an on/off switch, speaker and a button to select the sound once turned on. Once active the selected sound will randomly play once every 20 mins - 4 hours. The device needs to sleep between sounds as the battery needs to last at least 1 year switched on 24/7 So the code needs to be extremely power efficient. A test clip will be used to write/program to the attiny chip before shipping.