Essentially as a help for op and any others in the situation if it's a long term visa and not a short term/contract job.
This is a multi-stage process.
The employer will petition the beneficiary by filling out the I-140. Dependant on the employer they might just complete the application normally (4-6 months processing time approx with USCIS) or can pay around $2700 for premium processing which will be a USCIS processing time of around 45 days.
Once USCIS have approved the I-140, it will get passed on to NVC for the next stage. Time on this stage depends on the type of work visa eg EB1, EB2 etc and what Embassy.
Time frames on when those specific visas are available and what priority date they are looking at is posted on the monthly visa bulletin.
Using EB1 as an example which is current, it will take approximately 1 week for the welcome letter to be emailed from NVC. After this welcome letter is received and ceac account set up, fees will be paid and within 3-4 days of that the visa application (DS-261) will be open to complete. As well as this civil documents will need to be uploaded.
After all these are submitted, it will take around 3-5 days for it to be marked document qualified (DQ'd). Once DQ'd it is then just sitting tight and waiting for the London Embassy to send out interview letters and scheduling a medical after that.
I'm not sure if the embassy treats employment visa interviews differently or quicker etc and are on different timelines to those going through marriage based visas.
But just for awareness, married based visas, the London Embassy sends out interview letters in blocks usually around 3rd or 4th week of the month.
Those DQ'd by mid-Jan made the cut for the Jan interview letters and have interviews between mid-end Mar.
So expectation management, the whole process could take 8-10 months.
A few extra points:
. I know people have mentioned property taxes being expensive. But that is dependant on area. I'd have a look and research it.
Current property taxes for the year in the place I'll be moving to (Midwest, Indiana) is $1760 (£1418) which works out cheaper than Band A council tax I would pay where I currently am in the UK.
. Food prices. Fruit and veg more expensive. Meat is cheaper than the UK. Eg 650g chicken breast (good quality, grade a and not the cheap Tyson brand stuff) can be picked up for £3.64. In comparison 600g from Asda works out at £4.14.
Turkey can be picked up really cheap compared to here.
Being Mid-west there will be plenty of Aldi's about which can help with costs.
. One thing to consider expense wise is contingency planning in case of returning to the UK and maintaining NI contributions so that a full state pension can still be obtained.