Two online assessments, phone interview, followed by a group interview then one on one interview
First two online assessments were mathematical assessments and character assessments. Phone interview involved broad questions such as "why do you want to work for J.P. Morgan?" and "What areas of technology are you interested in?" Group interview involved a case study followed by group discussion and presentation to come up with a solution for the case problem. The final one on one interview involved an extensive character discussion, strength and weaknesses, interests and approach to various work hypothetical scenarios.
Read up on emerging technology trends having an impact on the finance industry. Research the company, have a clear and concise understanding of why you would want to work for this company, what would you hope to achieve.