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OGsiji/README.md

Hi, I'm Ogunniran Oluwasijibomi (OGsiji) 👋

Lead AI / Data Engineer · Building multi-tenant data platforms and production LLM systems


About Me

I'm a data and AI engineer with 6+ years of experience taking systems from whiteboard to production. I currently lead AI, backend, and data engineering at Descasio, where I'm building a multi-tenant Data Intelligence Platform on AWS (EventBridge, Glue, Athena, Lambda, ECS Fargate, Bedrock) that ingests, transforms, and serves analytics and LLM-powered insights across tenants.

  • 🚀 Founder of MarketCore, an AI-native, multi-tenant marketing automation engine
  • 📦 Previously led data engineering at Circo, designing event-driven engagement and ledger systems on Kafka, FastAPI, and dbt
  • ✍️ I write about data engineering and ML on Medium and Hashnode
  • 🤝 Open to collaborating on data platforms, applied LLM systems, and open-source tooling

What I Work With

Area Tools
Cloud & Infra AWS (Glue, Athena, Lambda, ECS Fargate, EventBridge, S3, DynamoDB, Bedrock), GCP (BigQuery), Terraform, Docker
Data Engineering Airflow, dbt, Spark, Kafka, SQL, Pandas, Soda
AI / ML LangGraph, LangChain, RAG & GraphRAG, scikit-learn, computer vision
Backend Python, FastAPI, Django REST, PostgreSQL, MongoDB, microservices

Featured Projects

Project What it does
data-contract-validator Open-source CI guard that validates dbt models against FastAPI/Pydantic schemas, catching breaking contract changes before they ship
Enhanced GraphRAG Knowledge-graph generator extending the GraphRAG-SDK framework to handle PDFs via Unstructured-IO
Airflow + dbt + BigQuery Pipeline End-to-end orchestrated data pipeline with Airflow, BigQuery, dbt, and Soda data-quality checks
Audio Transcription System Production-style audio transcription tooling built for scale
Enhanced Spark Modelling Scalable Apache Spark solution for processing and analyzing large-scale task log datasets

Stats

OGsiji's GitHub activity summary

Top languages by repo Top languages by commit

GitHub contribution streak


⚡ Off the keyboard: drawing, volleyball, mentoring beginners into data careers, and making music.

Pinned Loading

  1. OLTP-TO-DATA-WAREHOUSE-Pipeline OLTP-TO-DATA-WAREHOUSE-Pipeline Public

    An end to end OLAP TO OLTP Implementation

    Python 1

  2. aws-pipeline aws-pipeline Public

    Zillow Data Analytics (RapidAPI) | End-To-End Python ETL Pipeline

    Python

  3. airflow-tutorial airflow-tutorial Public

    Data Engineer Project: An end-to-end Airflow data pipeline with BigQuery, dbt Soda, and more!

    Python 15 8

  4. Enhanced_GraphRAG Enhanced_GraphRAG Public

    A project to demonstrate work on GraphRAG building a Knowledge Graph generator that extends the GraphRAG-SDK framework to handle PDF files using the Unstructured-IO library.

    Python 9

  5. data-contract-validator data-contract-validator Public template

    An open-source contract validation system that prevents production breaks by ensuring data transformation outputs (DBT, Databricks, etc.) match REVERSE-ETL/API expectations (SalesForce, HubSpot, Fa…

    Python 6

  6. audio-transcription-system audio-transcription-system Public

    An audio transcription project with AI

    Python 1