AI Engineer & Data Scientist
Innovating at the Nexus
My name is Karan Rajesh Talwalkar, and I am an AI Engineer and Data Scientist currently working at QualityKiosk Technologies. My passion lies in building intelligent, scalable, and impactful AI systems that bridge the gap between cutting-edge research and real-world applications. I have completed my B.Tech in Artificial Intelligence & Data Science from NMIMS University, and I am driven by a constant curiosity to explore how AI can solve meaningful problems across industries.
I have a deep foundational understanding of machine learning, deep learning, computer vision, and advanced signal processing. My work includes building a comprehensive AI-powered vitals detection system capable of estimating heart rate, respiratory rate, SpO₂, BMI, age, gender, stress, and more using just a 20-second facial video. I have developed robust systems for deepfake detection, mental health analysis using foundational LLMs, rPPG-based pipelines, and multimodal AI architectures. I have also worked extensively with Retrieval-Augmented Generation (RAG) systems—designing intelligent, context-aware pipelines that improve accuracy, reliability, and scalability of LLM-based applications.
Alongside my AI expertise, I have hands-on experience in full-stack and frontend development using React, Tailwind CSS, JavaScript, Flutter, Dart, and Firebase. This enables me to build powerful, user-friendly applications that seamlessly integrate advanced AI models with clean and intuitive interfaces.
I am always seeking opportunities to apply my knowledge, collaborate on innovative projects, and contribute to impactful AI-driven initiatives. I believe my strong technical foundation, problem-solving mindset, and dedication to learning allow me to deliver solutions that are both efficient and meaningful. Whether it's AI research, intelligent automation, RAG pipelines, or building immersive user interfaces, I aim to bring precision, creativity, and real-world value to every project I work on.

[2021 - 2025]

[2019 - 2021]
I developed an advanced AI-Powered Vitals Detection System that analyzes a 20-second facial video to estimate essential health vitals with high accuracy. The system leverages computer vision, deep learning, and signal processing to extract real-time physiological and biometric insights from facial cues.
🔹 Key Features:
✔️ Detects multiple vitals such as Heart Rate, Respiratory Rate, SpO₂, Stress, Age, Gender, BMI, Jaundice indicators, Facial Symmetry, Pupil Dilation, and more.
✔️ Uses state-of-the-art deep learning models for age, gender, BMI, and stress prediction.
✔️ Utilizes rPPG and Eulerian Video Magnification techniques to analyze subtle skin tone variations for heart rate and SpO₂ estimation.
✔️ Extracts and processes video frames to compute accurate health parameters within seconds.
✔️ Designed for high accuracy, robustness, and real-world usability.
✔️ Includes a clean, user-friendly UI interface for smooth interaction and report generation.
This project highlights my expertise in computer vision, deep learning, biomedical signal processing, and AI-driven health analytics — bringing cutting-edge research into practical, real-world application.
I developed an advanced Deepfake Detection System using a hybrid deep learning model to identify manipulated videos with high accuracy. The system is built on top of CNN and GRU layers, leveraging powerful architectures like DenseNet121, EfficientNet-B1, InceptionV3, and Xception.
🔹 Key Features:
✔️ Utilizes state-of-the-art deep learning models for enhanced detection.
✔️ Integrates CNN for feature extraction and GRU for temporal analysis of video frames.
✔️ Processes videos frame-by-frame to detect manipulated content effectively.
✔️ Designed for high accuracy and efficiency in deepfake identification.
✔️ Comes with a user-friendly UI interface for seamless interaction.
This project showcases my expertise in computer vision, deep learning, and AI-based video analysis while tackling the critical challenge of detecting synthetic media.


🔹 Key Features:
✅ Advanced CNN Architectures:
✔️ Implemented and compared AlexNet, GoogleNet, and ResNet for facial spoof detection.
✔️ Achieved the highest accuracy with AlexNet, demonstrating its efficiency in detecting presentation attacks.
✅ Robust Dataset & Training:
✔️ Created a dataset with real and spoofed face images using diverse attack scenarios.
✔️ Applied data preprocessing, augmentation, and noise injection to enhance model generalization.
✔️ Split the dataset into training, validation, and testing sets for optimal performance evaluation.
✅ Liveness Detection & Real-Time Testing:
✔️ Designed a model to accurately classify live vs. spoofed faces.
✔️ Evaluated the model with a webcam-based real-time liveness detection system.
✅ Performance Evaluation:
✔️ Used metrics like Precision, Recall, F1-score, and AUC-ROC to assess model effectiveness.
✔️ Conducted a comparative study, identifying the best-performing CNN model.
✅ Technology Stack:
✔️ Deep Learning Frameworks: TensorFlow / PyTorch
✔️ Programming Language: Python
✔️ Models Used: AlexNet, GoogleNet, ResNet
This project significantly enhances biometric authentication security, reducing vulnerabilities in facial recognition systems by effectively detecting spoofing attempts.
🔹 Key Features:
✅ Inventory Management:
✔️ Tracks medicine stock levels, expiration dates, and batch details.
✔️ Alerts for low stock and expired medicines to prevent shortages and wastage.
✅ Sales & Billing System:
✔️ Generates automated invoices and bills for seamless transactions.
✔️ Supports customer purchase history tracking for better service.
✅ Prescription & Customer Management:
✔️ Maintains digital records of prescriptions and patient details.
✔️ Provides a searchable database for quick retrieval of past prescriptions.
✅ Database & Security:
✔️ Designed with efficient relational database models (ER diagrams, SQL queries).
✔️ Implements data validation and security measures to prevent unauthorized access.
✅ Technology Stack:
✔️ Database: MySQL / PostgreSQL
✔️ Backend: PHP / Python (Django, Flask)
✔️ Tools: XAMPP, phpMyAdmint
This system ensures efficient pharmacy operations, reduces manual errors, and enhances customer service by automating critical processes.


Data Science Intern [Jan 2025 - Apr 2025 ]

Web Developer [Apr 2024 - July 2024 ]
• Developed Website.
If you'd like to get in touch, please feel free to connect with me on LinkedIn.
Feel free to connect with me on LinkedIn.
I'm a Data Scientist and AI Engineer enthusiast who enjoys writing on Medium. I share my experience, insights and lessons to help others learn. As I continue to work in this field, I aim to help build a global community where enthusiasts join forces and engage in meaningful conversations.