Pros
PTC hires intelligent people; they are often on the bleeding edge of technology and so they attract good talent. PTC's customers are very diverse and working with them provides many opportunities to expand knowledge in different areas, including engineering, manufacturing, and service.
Kontras
Having worked at PTC for many years and reflecting on all of the changes over time, it seems that it's a weird size. At $1B with large part of revenue coming from consulting, it's not small and not large; as such, it seems like management frequently changes their mind on how to run the business. Major changes from executive management can be expected every three years; this seem inefficient but may be necessary to adapt to the demands of the market.