Skip to content
View jbeleno's full-sized avatar
9 followers · 8 following

Achievements

Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pull Sharkx3Achievement: Pair Extraordinairex3Achievement: QuickdrawAchievement: YOLO

Highlights

  • Pro

Block or report jbeleno

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
jbeleno/README.md

👋 Hi, I'm Jesús — Software Engineer

Backend · Full-Stack · Data & AI

💡 Who am I?

Software engineer based in Colombia 🇨🇴, building production-ready backends, mobile apps, and AI/ML integrations.

I'm driven by curiosity and a builder mindset — I enjoy turning real problems into shipped products, learning across the stack, and connecting backend, data, and product decisions into systems that work.

🚀 What I'm working on

  • 🏋️ Symmetry — Product Engineer on a fitness app with 1M+ downloads and 4.8★ across 200k+ reviews. Backend in Python/Django, mobile in Flutter, monetization with RevenueCat / Superwall / App Store Connect, analytics with Mixpanel & PostHog.
  • 🎮 Skillion Studios — Co-founder & Mobile Engineer building a gamified habit app generating recurring monthly revenue. Offline-first with Drift (SQLite), Riverpod, Clean Architecture.
  • 🤖 AI/ML side projects — RAG systems, ML classification, computer vision (see pinned repos).

🌟 Featured Projects

Project What it is
🔗 local-rag-chatbot Production-ready RAG with FastAPI, Ollama, ChromaDB, PostgreSQL, LangChain. Hybrid search, reranking, async.
📈 streaming-churn-prediction-model ML model with 93.47% AUC-ROC using Random Forest, XGBoost, Logistic Regression.
🎭 mood-detector Real-time emotion detection with MediaPipe + OpenCV.
📚 biblioteca-rest-api Clean FastAPI + PostgreSQL + SQLAlchemy with CRUD, search, filters, pagination.
🚗 vehicle-telemetry-simulator Real-time vehicle telemetry over WebSockets with synthetic data streams.

💻 Tech Stack

Backend & APIs

Python FastAPI Django Flask JWT

Mobile

Flutter Dart Firebase

Databases

PostgreSQL MySQL SQLite Supabase

Data, ML & AI

NumPy Pandas scikit-learn OpenCV Plotly Jupyter

DevOps & Cloud

Docker GoogleCloud Vercel Git

Frontend

React JavaScript TypeScript TailwindCSS

🌐 Connect with me

LinkedIn

📩 Open to remote roles, contracts, and freelance work — backend, full-stack, or data/ML.

Pinned Loading

  1. residence-back residence-back Public

    Async REST API for residential condominium SaaS — FastAPI + SQLAlchemy 2.0 + PostgreSQL with PIN-based JWT auth, visitor control, PQRS, billing, amenity bookings, and an AI chatbot (RAG with Gemini…

    Python

  2. local-rag-chatbot local-rag-chatbot Public

    Fully local RAG chatbot — Ollama LLM + Sentence-Transformers embeddings + ChromaDB. Cross-encoder reranking, query expansion, multi-layer caching, 5 chunking strategies, conversational memory (Post…

    Python

  3. Back_rosaline Back_rosaline Public

    FastAPI e-commerce backend with JWT roles, automatic audit logging via SQLAlchemy events, Alembic migrations, domain-based test suite, and full Ubuntu deployment pipeline (gunicorn + nginx + systemd).

    Python 1

  4. streaming-churn-prediction-model streaming-churn-prediction-model Public

    Binary classifier predicting subscription churn for a streaming service. Trained on 125K users × 20 features. Random Forest reaches AUC-ROC 0.9347 and F1 0.85. Methodology: StratifiedKFold + Random…

    Jupyter Notebook 1

  5. mood-detector mood-detector Public

    Real-time emotion detection (happy/sad/angry) from webcam using MediaPipe Face Mesh + OpenCV. Modular architecture (Core/Service/UI/Models layers), heuristic classifier on geometric facial metrics …

    Python 1

  6. parqueadero-backend parqueadero-backend Public

    REST API for parking lot management with real-time spot availability (WebSocket/STOMP) and geolocation queries (PostGIS). Spring Boot 3.5, Java 21, JWT auth, Dockerized, deployed on AWS RDS.

    Java