Do not waste your time with this company. They are essentially running a scam to get senior-level consulting for free. After passing the initial stages, they assign a massive 5-6 page case study that focuses on their actual internal product problems.
I spent a full week preparing a high-fidelity presentation and a detailed solution for this extensive assignment. After the presentation, they went silent for a week only to send a generic rejection.
It is clear that they have no intention of hiring and are simply using the recruitment process to extract unpaid labor and fresh ideas from senior professionals to solve their own software hurdles. Highly unprofessional and unethical.
If you value your time and expertise, stay away.