From job description to evidence in three steps
Set the interviewer up once. After that, every candidate gets the same interview and the same rubric, at any hour.
- Step 1
Create an interviewer
Describe the role, pick the skills to probe, and attach a case study or codebase task. Every candidate gets the same rubric.
- Step 2
Invite candidates
Share a link, upload a CSV or XLSX, or create invitations from your ATS through the API. Candidates interview when it suits them.
- Step 3
Review scores and evidence
Each session returns dimension scores with quotes, the recording, the transcript and an integrity timeline. Your team makes the call.
One interview, every signal you need
Heizen covers the conversation, the hands-on work and the integrity check in a single session.
Adaptive voice interviews
A spoken technical interview that follows up on vague answers and goes deeper where the candidate is strong.
Case studies
Walk candidates through a realistic scenario and score how they reason, not whether they memorised an answer.
Heads-down codebase task
Candidates work in a real repository on their own, then explain their changes to the interviewer.
Integrity and proctoring
Gaze, second voices, screen loss and pasted answers land on a timeline tied to the recording, for a person to review.
Recordings and transcripts
Replay any moment. Every score links back to the words the candidate said.
Session quality
A per-session chart of latency, audio and connection quality, so a bad network never reads as a weak candidate.
API and webhooks
Create invitations, pull results and export to CSV or XLSX. Signed webhooks tell you the moment a result is ready.
Import candidates from CSV or XLSX. Export every result to CSV or XLSX.
Scores, not verdicts
Heizen never outputs hire, reject or a recommendation. Not in the report, the API, the exports or the webhooks. It gives your reviewers the evidence to decide quickly and defend the decision later.
Heizen returns
- Dimension scores against your rubric
- The quotes and timestamps behind each score
- Recording and full transcript
- Integrity signals on a reviewable timeline
- Low-confidence flags when the connection degraded
Your team decides
- Who moves forward
- Whether an integrity signal matters
- How much weight each dimension carries
Send interviews from your own stack
Trigger an invitation when a candidate reaches a stage in your ATS, and get the scored result back by webhook.
- REST API with test-mode keys that never use credits
- Signed webhooks for session.completed and result.ready
- Idempotency keys on every create
- TypeScript SDK and full reference at /docs
curl https://api.interviewer.heizen.tech/api/v1/invitations \
-H "Authorization: Bearer $HEIZEN_API_KEY" \
-H "Content-Type: application/json" \
-H "Idempotency-Key: ats-candidate-4821" \
-d '{
"interviewer_id": "int_8f2k1c",
"candidate": {
"email": "priya@example.com",
"first_name": "Priya",
"last_name": "Raman"
},
"expires_in_hours": 72
}'Built for candidate data
Interviews hold voices, faces and work samples. We treat them that way.
- Consent before recording
- Candidates see what is recorded and analysed, and agree before the interview starts.
- Isolated workspaces
- Each company's candidates, recordings and results are scoped to its own workspace and roles.
- Encrypted secrets
- API keys are stored hashed and provider credentials are encrypted at rest. Webhooks are signed.
- Expiring share links
- Report links use long random tokens, expire on a schedule and can be revoked at any time.
Questions teams ask first
Run your first 30 interviews free
Heizen Interviewer is invite-only while we onboard teams one at a time. Tell us about your hiring and we'll set up your workspace and first interviewer with you.