Pros
APT is an absolutely first tier consulting and data science organization. Despite now 15 years of experience, they maintain an innovative, open, and entrepreneurial atmosphere. The management is superb, the problems are the future of consulting, the vibe is friendly and supportive. The opportunities are excellent - APT put me in the board room of a Billion dollar company within 6 months of my joining. The best part, however, is the rigor and empirical approach to consulting which APT takes. The scientific approach to business question is powerful and highly satisfying. APT has carved out a name for itself and will continue to grow well into the future.
Cons
Rapid growth can make the company unfocused at times. Flat, merit based hierarchy encourages people to work to stand out, when sometimes people need to gel more tightly behind a set of ideas.