All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is not permissible for a Muslim to work in a restaurant which provides pork as this is cooperating in sin and transgression.
Pork is forbidden and it is not permissible to offer it neither to a Muslim nor to a non-Muslim. Allah Says (what means): {Prohibited to you are dead animals, blood, the flesh of swine…} [Quran 5:3]
This job is even more forbidden since it is done on a beach where your husband may be tempted by women. Therefore, he is obliged to seek another lawful job. Allah Says (what means): {And whosoever fears Allah and keeps his duty to Him, He will make a way for him to get out (from every difficulty). And He will provide him from (sources) he never could imagine.} [Quran 65:2-3]
Indeed, whoever gives up something for the sake of Allah, Allah will compensate him with something better.
Allah knows best.