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VRAJ PATEL

Projects

A selection of my technical projects ranging across ML pipelines, robust backends, and cloud infrastructure.

Machine Learning

Full-Stack Biometric Marathon Platform (SeeMyRace)

Private GitHub Repository

Architected a full-stack containerized web application enabling sub-50ms semantic facial recognition for race participants. Implemented an asynchronous ingestion pipeline to decouple heavy DeepFace inference, achieving <100ms UI latency during bulk uploads.

Flask Docker PostgreSQL pgvector OpenCV

Generative AI Mental Health Pipeline (BERT & Llama-3)

Private GitHub Repository

Fine-tuned BERT and Llama-3 (using 4-bit QLoRA) for clinical NLP classification, achieving a 0.79 Macro-F1 score while reducing VRAM usage by 50%+. Orchestrated a robust ETL pipeline to process 53,000+ clinical text samples for supervised fine-tuning.

PyTorch Hugging Face Llama-3 Unsloth Pandas

Real-Time NLP Detection Engine (HateBlocker)

Private GitHub Repository

Built a real-time threat detection system coupling a Chrome Extension with a FastAPI backend to achieve <1s inference latency on live Twitter feeds. Stacked TF-IDF vectors with custom linguistic features to train a robust XGBoost classifier (90.7% accuracy).

FastAPI XGBoost Scikit-Learn Chrome Extension

End-to-End Disease Prediction Pipeline

Private GitHub Repository

Developed a dynamic Deep Learning classifier with Neural Architecture Search (Keras Tuner) to optimize network topology. Engineered multi-stage GridSearchCV pipelines for SVMs and integrated SHAP modules to translate raw tensor weights into interpretable health risk factors.

TensorFlow Keras Scikit-Learn SHAP

Automated Interview Scoring Engine

Private GitHub Repository

Designed a multimodal predictive regression pipeline fusing dense text embeddings with 100+ prosodic audio features. Used SentenceTransformers and Cosine Similarity to structure multi-turn dialogue, deploying K-Fold Cross-Validation to minimize prediction error.

SentenceTransformers TensorFlow Scikit-Learn SHAP

Systems Infrastructure

Self-Hosted Cloud Infrastructure

Private GitHub Repository

Engineered a TrueNAS Scale home server cluster with a 24TB storage array. Orchestrated containerized microservices (Jellyfin, Immich, Tdarr) for high availability and seamless media transcoding, secured via Cloudflare Tunnels and Tailscale VPN.

TrueNAS Docker Swarm Portainer Cloudflare Tunnels Tailscale

Software Engineering

Full-Stack Student Marketplace Application (Ralphie Bites)

Private GitHub Repository

Architected a secure, containerized full-stack marketplace application using Node.js and PostgreSQL. Implemented robust RESTful APIs with bcrypt encryption and asynchronous controller logic to aggregate persistent SQL user records with real-time session states.

Node.js Express PostgreSQL Docker