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TalentFlow: AI-Powered Video Interview Platform

TalentFlow automates the recruitment interview process using conversational AI avatars. Recruiters create job postings, add candidates, and let an AI conduct personalized voice or video interviews - then review scored results with detailed feedback. Candidates get a natural, face-to-face interview experience powered by a realistic video avatar, with no login required.

What It Does

For Recruiters:

Create job postings with custom interview configurations (number of questions, duration, predefined questions)
Add candidates with resume uploads (PDF, DOC, DOCX) - resumes are automatically parsed and used to personalize each interview
Send unique interview links to candidates
Review AI-scored results: technical skills, communication, problem-solving, cultural fit, and an overall letter grade (A+ to F)
Read AI-generated summaries with strengths, weaknesses, and hiring recommendations

For Candidates:

Join an interview via a unique link - no account needed
Choose between a video interview (AI avatar via Tavus) or audio-only mode
Take up to 2 practice interviews first, with immediate AI coaching feedback and a compatibility report
Answer questions naturally via microphone; the AI listens, transcribes, and asks intelligent follow-ups based on the job description and resume
Download a transcript after completion

How It Works

Recruiter creates job ──► Adds candidate + resume ──► Sends interview link
                                                            │
                                    ┌───────────────────────┘
                                    ▼
                          Candidate opens link
                                    │
                     ┌──────────────┼──────────────┐
                     ▼              ▼              ▼
               Practice Mode   Video Mode    Audio Mode
               (AI coaching)   (Tavus avatar) (Voice only)
                     │              │              │
                     ▼              ▼              ▼
              Compatibility       AI conducts interview
              report (1x)     (questions ─► answers ─► follow ups)
                                    |
                                    │
                                    ▼
                          Auto-scoring + analysis
                          (resume match + interview performance)
                                    │
                                    ▼
                          Recruiter reviews results

Video Interview (Tavus)

The AI avatar appears as a full-screen video call. It greets the candidate by name, asks questions tailored to the job and resume, listens to spoken answers, and moves through the interview at a natural pace. The system uses multiple termination strategies (objectives tracking, prompt-based farewell detection, silence polling) to end the interview cleanly. If Tavus is unavailable, it falls back to audio-only mode automatically.

Scoring

Each completed interview produces:

Resume match score (0–100) - how well the resume fits the job
Interview performance score (0–100) - based on answer quality across all questions
Combined overall score with letter grade
Sub-scores for technical skills, communication, problem-solving, and cultural fit
AI-generated summary, strengths, weaknesses, and hiring recommendation

Tech Stack

Layer	Technology
Backend	Django 5.0, Python 3.11
Database	SQLite (dev) / PostgreSQL (prod)
Conversational AI	OpenAI GPT-4o (primary), Anthropic Claude (fallback)
Voice	ElevenLabs (text-to-speech + speech-to-text via Scribe)
Video Avatar	Tavus CVI (primary), HeyGen & D-ID (secondary)
Resume Parsing	PyPDF2, python-docx
Frontend	Django Templates, Bootstrap 5, vanilla JavaScript
Audio Capture	MediaRecorder API, Web Audio API (mic gain control)
DevOps	Docker, Docker Compose, Gunicorn, Whitenoise

Key Design Decisions

Multi-provider avatar strategy: Tavus is the primary video provider, with HeyGen and D-ID as alternatives. The architecture allows swapping providers without changing the interview flow.
Automatic fallback: If the video avatar service is unavailable, interviews seamlessly fall back to audio-only mode mid-session.
Practice mode with privacy: Candidates can practice up to 2 times with full AI coaching feedback. Practice results are shown once and not saved to the recruiter's dashboard.
Robust interview termination: A chain of fallback mechanisms (objectives API, prompt-based farewell, silence detection, manual button) ensures interviews end cleanly without awkward hangs.
No candidate authentication: Candidates access interviews via unique UUID tokens - no sign-up friction.
Resume-aware AI: The interviewer receives the full job description and parsed resume, enabling tailored questions and accurate scoring.