Stephen Njoroge

I've built secure backend systems including e-commerce, digital wallet, and social media APIs using Python, FastAPI, PostgreSQL, SQLAlchemy, and Docker.

At Artsam Technologies Ltd, I translate business requirements into conceptual, logical, and physical data models for enterprise applications. I design scalable relational structures, enterprise data flows for ETL and reporting, and technical documentation including data dictionaries and ERDs.

My projects include JWT authentication, role-based authorization, normalized schemas, ACID-compliant transactional structures, optimized SQL queries, and automated testing with Postman and Pytest.

I've also developed a Sales Analytics Data Warehouse with Databricks, Delta Lake, Delta Live Tables, and Bronze, Silver, and Gold ETL pipelines. I bring systems thinking, process optimization, and cross-functional collaboration from engineering and production roles.