Pros
This is not your typical corporation. As a family owned and run company for over 160 years with no debt, the company is not prone to the typical uncertain and sometimes toxic environments you'll find in publically traded companies. They pay well, like to promote from within, train and try to retain all their talent, and most importantly, don't just slash jobs or stop hiring based on quarterly performance. Heraeus has a long term vision, and while the work environment may not have the thrill of some larger/more cutting edge companies, but the people you work with are like family, the jobs are low stress and rewarding, not a lot of crazy hours, and the growth opportunities and program are numerous as long as you're flexible and looking to grow professionally.
Cons
As a German company, even with it's ongoing changes, it is still very German-centric. Which isn't always a con, but US employees can tend to feel that their voice doesn't have as big of an impact as those who sit in Germany. Lags behind in some modern day work/life balance programs and international diversity at senior leadership levels, but considering its manufacturing background and history, Heraeus has been making great strides in changing this.