The interview process began with a standard HR screening, followed by a second round with a Quant who assessed my market knowledge and technical abilities. However, this round also included an unusual line of questioning about potential trade opportunities that my firm is focusing on for further growth, along with detailed discussions on implementation—topics that seemed irrelevant to evaluating my qualifications for the role. The third round raised significant concerns. The interviewer asked highly specific questions about the proprietary modeling aspects of my strategy, including legal entity structures, granular model inputs (e.g., exact factors and metadata derivation), and their integration into the broader framework. Given the sensitive nature of these details, I opted to share simplified alternative approaches rather than disclose proprietary methods—a decision that visibly frustrated the interviewer. The rejection rationale—citing a lack of expansion in this particular area—further called the process into question. If no hiring was planned, why conduct such an in-depth interview focused on extracting proprietary insights? The combination of overly specific technical inquiries, dismissiveness toward confidentiality concerns, and the post-interview justification suggests an unprofessional approach to candidate evaluation. Candidates with proprietary strategies should exercise caution when engaging with this firm.