✨ AI

NebuFit

AI-Powered Fitness & Health Platform

Role: Full-Stack Engineer

PythonFastAPIReact NativePostgreSQL (Supabase)RedisRAGClaude AIOpenAI GPT-4oAnthropicElevenLabsStripeJWTSharp

NebuFit is an AI-powered fitness and health platform consisting of a scalable backend infrastructure and a React Native mobile application. The platform provides personalized fitness coaching through computer vision, AI-generated workout and nutrition plans, bloodwork analysis, health insights, voice-based recommendations, and a Retrieval-Augmented Generation (RAG) fitness assistant. The system manages the complete user journey, including authentication, onboarding, subscriptions, health assessments, progress tracking, AI coaching, and administrative operations while supporting real-time AI interactions and scalable processing pipelines.

Project walkthrough

Demo & Platform Overview

What we built

React Native Mobile Application

Developed a cross-platform mobile application for iOS and Android focused on fitness coaching, nutrition planning, progress tracking, and health monitoring.
Built onboarding flows, profile management, subscription management, AI chat experiences, workout tracking, and health analytics dashboards.
Integrated real-time AI responses, health reports, and personalized recommendations.

AI-Powered Body Analysis

Implemented computer vision workflows using Claude and GPT-4o to analyze body images and generate personalized fitness assessments.
Generated body composition insights, improvement recommendations, and progress comparisons over time.
Built image-processing pipelines using Sharp for optimization, resizing, and analysis preparation.

AI Workout & Nutrition Planning

Developed AI-driven workout generation tailored to user goals, fitness levels, equipment availability, and health conditions.
Created personalized meal plans, nutritional guidance, calorie recommendations, and macro calculations.
Supported dynamic plan adjustments based on user progress and engagement data.

Bloodwork Analysis & Health Intelligence

Impact

Delivered a comprehensive AI fitness platform combining computer vision, health analysis, personalized coaching, and conversational AI.
Reduced manual coaching requirements through intelligent workout generation, nutrition planning, and health assessments.
Enabled real-time AI experiences with scalable streaming infrastructure and multi-provider redundancy.
Created an end-to-end mobile health ecosystem integrating payments, authentication, AI services, and personalized fitness guidance.

← Back to Healthcare & Wellness

Built document-processing pipelines capable of extracting and analyzing health data from uploaded bloodwork reports.
Generated AI-powered health summaries, risk indicators, and actionable recommendations.
Integrated ElevenLabs text-to-speech capabilities to convert health reports into audio explanations.

RAG-Based Fitness Assistant

Designed and implemented a Retrieval-Augmented Generation (RAG) system that provides contextual fitness, nutrition, recovery, and health guidance.
Enabled semantic retrieval from curated fitness knowledge bases, research documents, and health resources.
Delivered highly personalized AI coaching experiences through conversational interfaces.

Subscription & Payment Infrastructure

Integrated Stripe subscription management, billing workflows, and webhook processing.
Implemented subscription lifecycle handling, plan upgrades, cancellations, renewals, and payment recovery mechanisms.
Built secure entitlement management tied directly to premium AI features.

Authentication & Security

Implemented Supabase authentication with multi-factor authentication (MFA).
Developed role-based access controls, authorization guards, and secure API access patterns.
Built user onboarding, profile management, and administrative management tools.

Real-Time AI Infrastructure

Developed multi-provider AI orchestration supporting Anthropic Claude, OpenAI GPT-4o, and ElevenLabs services.
Implemented streaming AI responses using Server-Sent Events (SSE) for real-time user experiences.
Added intelligent model fallback strategies, retry mechanisms, and provider failover handling for reliability.

Data & Platform Architecture

Built scalable PostgreSQL data models and migration workflows using Supabase.
Leveraged Redis for caching, session optimization, and performance improvements.
Designed a modular service architecture with reusable middleware, guards, interceptors, and shared infrastructure components.
Implemented environment-driven model routing and AI provider selection for operational flexibility.