Is it permissible to delay my Dhuhr and Asr prayers to perform them with the Maghrib prayer, due to my work circumstances as a night security guard?

A Muslim must observe prayer at its legally appointed time. Allah has warned those who delay prayer beyond its time without a valid excuse. It is not permissible to sleep after the time for prayer has begun, before performing it, for one who knows that sleep usually overcomes him. However, if he sleeps before the prayer time begins, he must take measures to wake up. If he takes these measures but does not wake up, there is no sin upon him, and he must pray immediately upon waking up. Excessive sleeping through prayer indicates negligence, and prayer is the first thing a servant will be held accountable for on the Day of Judgment.