Overseas Job whilst on spouse visa

[Terpe]

i take it you don't have ILR yet ?
if not there are no set number of days you have to be in the UK to be granted ILR, but the UK is suppose to be your home.
some people have spent maybe a year or so out of the UK because of work and still got ILR, but part of it i think is on the discretion of the case worker.

Yes, but don't forget there are strict residence requirements for applications for British Citizenship.

General residential requirements for spouses:-

have been resident in the United Kingdom for at least three years (this is known as the residential qualifying period); and
have been present in the United Kingdom three years before the date of your application; and
have not spent more than 270 days outside the United Kingdom during the three-year period; and
have not spend more than 90 days outside the United Kingdom in the last 12 months of the three-year period; and
have not been in breach of the immigration rules at any stage during the three-year period