Ghost Engineer positions itself as an interview-time tool rather than an interview-preparation course. Instead of grinding practice problems, you launch the app before the call, keep it running in the background, and capture any question that appears in the shared editor or video chat. The app then produces a solution in the language of your choice, plus optimization notes and a short talk track you can read aloud.
The design goal is discretion. There is no floating overlay and no window that shifts focus, so nothing appears in a screen share. It works alongside common interview platforms such as CoderPad, CodeSignal, HackerRank, and LeetCode, and it can answer in the same language you wrote your prompt in. Supported languages include Python, JavaScript, TypeScript, Java, Kotlin, Swift, Dart, C#, C++, Go, Rust, Ruby, PHP, SQL, R, HTML/CSS, Bash, Perl, Julia, Scala, and MATLAB.
It is a paid desktop product with a free demo mode, an internet connection requirement, and macOS/Windows builds. Because it is explicitly built for use during a proctored or live evaluation, the ethical and contractual responsibility for using it rests entirely with the candidate and the rules of the hiring process.
