Trindent is a boutique firm that focuses on implementation strategies and performance improvement projects.
Because this is a boutique firm expect very fast pace and steep learning curve. Culture-wise because it's a small team, everyone is very easy going and fun to be around. They recently started monthly training with all the staff, which is nice considering similar-sized firms don't have that.
To prepare make sure you are comfortable doing cases (McKinsey style) and you good with excel for later rounds.