Building scalable backend systems, data platforms, and AI-powered applications with Python.

I'm a software engineer from Nairobi, Kenya passionate about solving real-world problems through backend engineering, data engineering, and machine learning.

Over the past few years I've been building projects in:

• Backend Development (Django, FastAPI)
• Data Engineering
• Machine Learning
• Aviation Technology
• Analytics & Data Warehousing

I enjoy designing systems that transform raw data into products that create measurable business value.

• Aircraft Charter Management & CRM Platform
• Divvy BikeShare Data Engineering Pipeline
• BookCMS (Django 6 Learning Project)
• Flight Operations Data Warehouse
• Machine Learning Portfolio Projects

• Advanced Data Engineering
• Apache Airflow
• dbt
• Docker & Kubernetes
• MLOps
• Distributed Data Systems
• LLM Applications
• System Design

• Backend Engineering
• Data Engineering
• Machine Learning
• Artificial Intelligence
• Aviation Technology
• Cloud Computing

• Python
• Django
• Django REST Framework
• FastAPI
• REST APIs

• PostgreSQL
• DuckDB
• SQLite
• SQL
• Pandas
• NumPy
• dbt
• ETL Pipelines

• Scikit-Learn
• XGBoost
• CatBoost
• Random Forest
• Gradient Boosting

• Docker
• Git
• GitHub Actions
• Linux
• Nginx

• HTML
• CSS
• Bootstrap
• Tailwind CSS
• JavaScript

A production-ready charter management platform built with Django featuring:

• CRM
• Fleet Management
• Flight Scheduling
• Crew Management
• Maintenance Tracking
• Operations Dashboard

A modern data warehouse implementing

• Bronze
• Silver
• Gold architecture

Built using:

• PostgreSQL
• SQL
• Python
• ETL Pipelines

End-to-end data engineering project featuring

• Data ingestion
• Data cleaning
• ETL pipelines
• Data warehouse
• Analytics-ready datasets

A content management system built while studying Django 5 by Example.

Technologies:

• Django 6
• Bootstrap
• PostgreSQL

• ALX Software Engineering
• WorldQuant University Data Science Program
• Civil Aviation Management — Moi University

• Django Projects
• Data Engineering Projects
• Open Source
• Machine Learning
• Aviation Software
• Backend APIs

Email: otienohjohncharles@gmail.com

Medium: https://otienoh.medium.com/

Dev.to: https://dev.to/john_otienoh//

LinkedIn: https://www.linkedin.com/in/john-otienoh/

Twitter/X: https://x.com/justotienoh/

Portfolio: https://portfolio-tau-red-kfnjwztdgj.vercel.app/

"Build software that solves real business problems through scalable backend systems, reliable data pipelines, and intelligent machine learning."

If you find any of my projects useful, consider giving them a star.