We live in a world where almost every modern software application uploads everything to the cloud. Your clicks, your files, your voice notes, and your documents are routinely processed on remote servers, logged in databases, and often used to train third-party AI models without your explicit consent.
When it comes to job interviews, this "cloud-first" approach is a massive liability. An interview contains highly sensitive, proprietary information. You discuss pre-release features, internal team conflicts, architectural bottlenecks of your current employer, and personal career details. Furthermore, sharing a live conversation feed without extreme care is a breach of trust.
That is why we designed hcalls with a strict, uncompromising privacy-first, local-data architecture. Here is how it works under the hood.
1. Zero Server-Side Logging
When you upload your resume to customize your copilot session, the file is not stored in an open cloud storage bucket. Instead, the parsed resume tokens are stored directly in your browser's local storage or secure, encrypted cookies. When a session starts, the matching happens on demand. Our servers act as a stateless pipeline-processing the prompt in memory and streaming the tokens directly back to your client. The moment your session closes, that transient data is wiped from RAM.
2. Local Audio Processing
Your computer's microphone and system loopback audio are captured locally by our desktop application. We do not record or save your audio to disk. The audio is streamed as raw, temporary PCM buffers directly to our speech-to-text API for transcribing and then instantly discarded. No voice recordings ever sit on a server, and no one can ever "replay" your interview sessions.
3. No AI Training on Candidate Data
We have signed enterprise-level data privacy agreements with our API providers (including Deepgram and our LLM hosts). Under these agreements, 100% of the data processed through hcalls is excluded from model training. Your responses, coding approaches, and resume details remain yours and yours alone.
"Security isn't a feature you add to a product; it's the core architecture. If we don't hold your data, we can never leak it."
Summary of Data Handling
| Data Type | Where It Is Stored | Who Can See It |
|---|---|---|
| Uploaded Resumes | Local Browser Cookies / Memory | Only You |
| Live Interview Audio | Processed in RAM (Never Saved) | Nobody |
| Session Transcripts | Temporary Client State | Only You (Wiped on close) |
Enterprise-Ready Compliance
Whether you are interviewing at a high-growth startup or a Fortune 500 company with strict intellectual property rules, you can use hcalls with complete peace of mind. Because we do not store transcripts or logs, we present zero security risk to you or your future employer.