Pros: absolutely none
Cons: leadership; culture; advancement; pay; growth; lack of success; arrogance of management;
In the old days, this was a good company. However in recent years the incompetent senior management team (3 stooges) has a choke hold on the company at every turn.
ATS has a terrific workforce coupled with the worst senior management team I have every experienced. The sad thing is that the management team is arrogant, inexperienced (no prior leadership), uneducated (no advanced degrees), and uninformed. Each year they develop a "blue sky" business plan, present it to the corporate management in the UK and they buy in. Then the ATS bosses continue to fail (they missed their biz plan by over 50%) yet they still have their fat cat jobs, benefits and checks.
All mid to senior management promotional opportunities are filled by outsiders - so you see there is NO FUTURE for us worker bees.
If you are unemployed and desperately need a paycheck, then you might use Ultra as "Interim Income". You might make a little more than unemployment but not much. They are a bunch of cheapskates and typically pay 25-30% LESS that the going Austin salaries.
To be forewarned is to be cautious.