Build This Project · AI Portfolio

AI Interview Preparation Agent for Your AI Portfolio

Build an AI interview preparation agent that demonstrates your ability to work with LLMs, speech-to-text, and AI-powered feedback systems.

Tracks
Interview Agent · Live Interactive
Project Focus
What you'll build
Skills Demonstrated
Key competencies
Employer Interest
Value to employer
Design LLM Speech Feedback App Portfolio
Click to see the project overview — an AI interview preparation agent that will make your AI portfolio stand out.

Home / Tutorials / Project Guides / AI Interview Preparation Agent

Build This Project · AI Portfolio

AI Interview Preparation Agent — Complete Project Guide

LLM SPEECH FEEDBACK PORTFOLIO LLM Question generation Answer evaluation OpenAI/Claude Speech Speech-to-text Voice interaction Whisper API Feedback AI evaluation Improvement tips Key insight Portfolio Showcase work Get hired Offer
An AI interview preparation agent demonstrates LLM integration, speech-to-text, and AI feedback — a complete AI application.

Quick summary — build an AI interview preparation agent

Interview preparation is a perfect AI application. This project demonstrates your ability to build an AI agent that conducts mock interviews, evaluates answers, and provides actionable feedback — a complete AI system.

In this guide you will learn:

  1. Project overview — what you'll build and why.
  2. Question generation — using LLMs for interview questions.
  3. Speech-to-text integration — voice interaction.
  4. Answer evaluation — AI-powered feedback.
  5. Building the app — Streamlit interface.
  6. Portfolio presentation — how to show it to employers.

SECTION 01Project overview

Here's what you'll build in this project:

  • Business problem: Job seekers need practice answering interview questions and getting feedback on their responses.
  • Your solution: An AI agent that generates interview questions, listens to answers (or accepts text), and provides detailed feedback.
  • Tools: Python, OpenAI/Claude API, Whisper API, Streamlit.
  • Outcome: A portfolio-ready AI application that demonstrates LLM integration, speech processing, and AI feedback.
Key insight: AI agents are the future of AI applications — this project shows you can build agentic systems that help users.

SECTION 02Question generation

Here's how to generate interview questions using LLMs:

import openai

def generate_questions(role, num_questions=5):
    prompt = f"""Generate {num_questions} interview questions for a {role} position.
    Include a mix of behavioral, technical, and situational questions.

    Questions:
    1. """

    response = openai.ChatCompletion.create(
        model="gpt-3.5-turbo",
        messages=[{"role": "user", "content": prompt}]
    )

    questions = response.choices[0].message.content.strip().split('\n')
    questions = [q.strip() for q in questions if q.strip()]

    return questions

# Example
questions = generate_questions("Data Analyst")
for i, q in enumerate(questions):
    print(f"{i+1}. {q}")
questions.py

SECTION 03Speech-to-text integration

Here's how to integrate speech-to-text for voice answers:

import openai

def transcribe_audio(audio_file):
    with open(audio_file, "rb") as f:
        response = openai.Audio.transcribe(
            model="whisper-1",
            file=f
        )
    return response["text"]

# Alternative: Use local Whisper model
# import whisper
# model = whisper.load_model("base")
# result = model.transcribe("audio.wav")
# print(result["text"])
speech.py

SECTION 04Answer evaluation

Here's how to evaluate interview answers:

def evaluate_answer(question, answer):
    prompt = f"""Evaluate this interview answer.

    Question: {question}

    Answer: {answer}

    Provide:
    1. A score from 1-10
    2. Strengths of the answer
    3. Areas for improvement
    4. A sample improved answer

    Format your response as a structured evaluation."""

    response = openai.ChatCompletion.create(
        model="gpt-4",
        messages=[{"role": "user", "content": prompt}]
    )

    return response.choices[0].message.content

# Example
question = "Tell me about a time you used data to solve a business problem."
answer = "I used SQL to analyze customer data and found a trend..."
feedback = evaluate_answer(question, answer)
print(feedback)
evaluate.py

SECTION 05Building the app

Here's how to build the Streamlit app:

import streamlit as st

st.title("AI Interview Preparation Agent")

# Sidebar for settings
st.sidebar.title("Settings")
role = st.sidebar.selectbox("Select Role", ["Data Analyst", "Software Engineer", "Data Scientist"])
question_type = st.sidebar.radio("Question Type", ["Technical", "Behavioral", "Mixed"])

# Initialize session state
if 'questions' not in st.session_state:
    st.session_state.questions = []
if 'current_q' not in st.session_state:
    st.session_state.current_q = 0

# Generate questions
if st.button("Start Interview"):
    st.session_state.questions = generate_questions(role)
    st.session_state.current_q = 0
    st.session_state.answers = []

# Interview loop
if st.session_state.questions:
    q_index = st.session_state.current_q
    if q_index < len(st.session_state.questions):
        st.subheader(f"Question {q_index + 1}")
        st.write(st.session_state.questions[q_index])

        # Input methods
        input_method = st.radio("How would you like to answer?", ["Text", "Voice"])

        if input_method == "Voice":
            if st.button("Record Answer"):
                with st.spinner("Recording..."):
                    answer = get_voice_answer()
                    st.write(f"Your answer: {answer}")
                    st.session_state.answer = answer
        else:
            answer = st.text_area("Your answer:")

        # Submit and evaluate
        if st.button("Submit Answer"):
            if 'answer' in locals():
                feedback = evaluate_answer(st.session_state.questions[q_index], answer)
                st.session_state.feedback = feedback
                st.session_state.answers.append(answer)
                st.session_state.current_q += 1
            elif st.session_state.get('answer'):
                feedback = evaluate_answer(st.session_state.questions[q_index], st.session_state.answer)
                st.session_state.feedback = feedback
                st.session_state.answers.append(st.session_state.answer)
                st.session_state.current_q += 1

    else:
        # End of interview
        st.success("🎉 Interview Complete!")
        st.subheader("Your Answers")
        for i, ans in enumerate(st.session_state.answers):
            with st.expander(f"Question {i+1}"):
                st.write(st.session_state.questions[i])
                st.write("Your answer:", ans)

        if st.button("Get Overall Feedback"):
            overall = evaluate_overall(st.session_state.questions, st.session_state.answers)
            st.write(overall)
app.py

SECTION 06Portfolio presentation

Here's how to present this project to employers:

  • GitHub: Upload your code, LLM integration, and app code.
  • README: Write a clear README with project overview, features, and deployment instructions.
  • Live demo: Deploy your app on Streamlit Cloud.
  • Screenshots: Add screenshots of your app in action.
  • LinkedIn post: Share your project with a brief explanation of the problem you solved.
Key point: An AI agent that helps people prepare for interviews is a unique and impressive portfolio project.

SECTION 07Interview Q&A — AI interview agent

Q1Why did you choose an interview preparation agent?

Interview preparation is a real problem for job seekers. I wanted to show I can build AI agents that solve practical problems and help people.

Q2What LLM did you use?

I used OpenAI's GPT-4 for question generation and answer evaluation. I also used Whisper for speech-to-text.

Q3How does the agent evaluate answers?

The agent uses GPT-4 to evaluate answers based on clarity, completeness, structure, and relevance. It provides a score and improvement suggestions.

Q4What was the biggest challenge?

Generating realistic interview questions and evaluating answers consistently was the biggest challenge.

Q5What would you do differently next time?

I'd add a database of sample answers, industry-specific questions, and a progress tracking feature.

SECTION 08Test yourself — interview agent quiz

Five questions. No sign-up.

0 / 5

Pick an answer to see why it is right or wrong.

SECTION 09Frequently asked questions

What's the best LLM for interview question generation?

GPT-4 and Claude are both excellent. GPT-3.5 is also good for simpler applications.

How does the speech-to-text work?

I used OpenAI's Whisper API to transcribe audio recordings into text for evaluation.

Can the agent handle different roles?

Yes — you can customize questions for different roles by changing the prompt or using role-specific templates.

How long does this project take?

3-4 weeks — 1 week for question generation, 1 week for speech integration, 1 week for evaluation, 1 week for app and deployment.

Do I need an OpenAI API key?

Yes — for the LLM and Whisper API. You can also use open-source alternatives if you prefer.

Classroom & online · Noida

Build AI agent projects — get hired

Our Artificial Intelligence Training Course includes AI agent and other AI projects with step-by-step guidance.

₹18,500 · full programme ₹28,000
  • 8 AI projects
  • LLM integration
  • Mock interviews
  • Weekday & weekend batches
Build This Project

More AI project guides

Career resources

Build your career

Latest articles

Fresh this week