I Built a Private, Open-Source AI Interview Coach for My Friend Who Dreads Placement Interviews

Description and use

A browser‑only interview coach using an open‑weight model provides private, free practice with instant STAR‑based feedback.

Problem

Interview answers are personal, hard to practice, and often judged, leading to anxiety and suboptimal preparation.

Outcome

The app enables private, free, and open-source interview practice with instant, structured feedback, improving confidence and preparation.

Workflow

• Select role and optional company
• Click "New question"
• Answer in own words
• Receive score, STAR check, tips, stronger version, and follow-up question

Evidence

Placement Interview Coach is a web app that asks you a realistic interview question, lets you answer in your own words, and gives you instant feedback using the STAR method

Source

An open-weight AI model runs entirely inside your browser.

Source

The whole app is a single index.html file with no backend and no API keys.

Source