How to Practice for a Technical Interview with your own Resume (Free AI Tool)

Invoxy — Thu, 22 Jan 2026 02:09:45 +0000

I've been prepping for engineering interviews lately, and I noticed a problem.

If I ask ChatGPT: "Roast my resume," it gives generic advice like "Add more metrics."
If I ask: "Simulate a technical interview," it asks standard questions like "What is the difference between TCP and UDP?"

The missing link was Context. The LLM didn't know my specific history.

So, I built a tool to fix it.

The Project: Invoxy

I built Invoxy.xyz. It’s a free tool that parses your PDF resume and generates context-aware interview questions.

How it works under the hood

Client-Side Parsing: I used pdf-parse to extract raw text strings from the resume upload directly in the browser (keeping data private).
Context Injection: I built a system prompt that feeds the LLM your specific bullet points + the target Job Description.
The "Red Team" Persona: I tuned the model to be skeptical. Instead of being nice, it specifically looks for gaps in employment or vague claims (e.g., "You claimed 20% growth here—how exactly did you attribute that to your code?").

The Stack

Frontend: Next.js
AI: Google API (Context-aware prompting)
Parsing: PDF.js / text-extraction

Try it out (Free Beta)

I released it today as a free beta. If you are job hunting, give it a shot and let me know if the "Red Team" mode is too mean.

Live Demo: https://invoxy.xyz

DEV Community: Invoxy

How to Practice for a Technical Interview with your own Resume (Free AI Tool)

The Project: Invoxy

How it works under the hood

The Stack

Try it out (Free Beta)