I was working in Sapient Razorfish as Java developer, which is now converted into Publicis Sapient.
Let me give an honest Sapient Bangalore feedback.
First of all, all team leads and managers have deep understanding of project code and technology. If you get stuck, you can ask any senior person, who will look into the issue.
Once, I had to debug the issue for 7 days, but no one judged me for incompetency, it was just a difficult syntax error to track, I was even given appreciation for solving a issue which was causing major feature failure.
Publicis Sapient has open work culture and supportive people. All feedbacks are taken constructively. Sense of ownership is instilled from early stage.