I worked at Tandem Diabetes full-time (More than 5 years)
The culture is by far the best compared to other companies. You are appreciated for your hard work and everyone has your back when you need it.
There are many peaks and valleys so you have to be able to roll with things. Not necessarily a con, but a reality.
Advice to Management
Keep your people happy and it will trickle down to the customers. Basically keep doing what you are doing.
The process took 2+ weeks. I interviewed at Tandem Diabetes (San Diego, CA).
Interview process was straight forward and pleasant initially. I had 3 interviews and spoke to at least 6 people at different levels. The process is basic paper drill. I either was not qualified or not a good fit, and that is ok. After 2+ interviews you would think it is common courtesy to notify me that I did not get the job, but hey we all know common courtesy is not all that common. In hind sight most traditional companies struggle with the recruitment process. Seems like a good company but do not hold your breath on a fluid and transparent process.