Unbluffable

Unbluffable is a voice mock interviewer for quant, investment banking, consulting and software roles. I built it from my own experience: knowing the material didn’t prepare me for someone questioning an answer and asking me to explain my reasoning. Candidates answer aloud. The app identifies the number they committed to, checks it in code, challenges mistakes, and asks the same puzzle with new numbers. Behavioural interviews use targeted follow-ups to draw out missing details. A report shows the candidate’s words, corrections, help received and what to practise next. Candidates can also upload a question from their own notes. It becomes available for practice only after passing numerical checks. The project includes a live application, automated tests and a public dataset of 600 numeric interview questions.