Built by Engineers, For High-Stakes Tech Loops
Every feature of Prepzen is engineered to give you unfair clarity without distracting you or leaving a trace.
Discreet power for every interview loop.
Built from scratch for software engineers, tech leads, and distributed systems architects.
Hardware-Level Screen Share Invisibility
Prepzen communicates directly with native OS window display managers. Utilizing WDA_EXCLUDEFROMCAPTURE, video software captures only your browser or IDE — leaving Prepzen completely undetectable.
Lossless Loopback Audio
Direct audio loopback captures interviewer speech from headphones with zero acoustic feedback or echo, transcribing both voices seamlessly.
Algorithmic Code Synthesis
Instant conceptual clues, edge case checklists, and full implementations in Python, Go, Java, TypeScript, and C++.
Distributed Architecture Math
Back-of-the-envelope calculations, QPS sizing, partitioning strategies, and database trade-offs formatted for verbal delivery.
Grounded STAR Storytelling
Every behavioral response pulls from your uploaded Master Resume. Your real numbers, actual team leadership moments, and genuine achievements.
How the Technology Works Under the Hood
Zero-Trace Window Affinity
Uses native OS-level window display affinity flags to completely exclude the overlay from desktop captures, Zoom, Teams, and Google Meet sharing sessions.
Real-time Dual Loopback Audio
Captures both incoming meeting audio and your own microphone output without feedback loops or confusing virtual audio cable software.
Dynamic Language Synthesizer
Supports Go, Python, Java, C++, TypeScript, Rust, and SQL with clean idiomatic patterns and complete time/space complexity derivations.
System Architecture Blueprints
Instant calculators for scale, QPS, sharding keys, cache invalidation strategies, and consensus algorithms (Raft, Paxos).
Resume & Portfolio Context Matching
Upload your resume so the AI can pull concrete examples from your past experience to answer behavioral and leadership questions effortlessly.
Local HUD Security & Panic Button
Hit Escape twice or trigger a custom hotkey to instantly minimize and blank out the entire cockpit in 50ms.
Step into your next loop with quiet confidence.
Download the native desktop client now. 20 free credits included. No credit card required.