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jitsejan/README.md

πŸ‘‹ Hello, I'm Jitse-Jan!

πŸš€ Senior Data & AI Platform Engineer | AWS, Snowflake, dbt, Azure

10+ years building enterprise cloud data platforms across regulated financial services and investment management. I combine architecture depth with hands-on delivery β€” personally shipping production pipelines, dbt models, and governance frameworks β€” while leading teams, aligning stakeholders, and driving platform strategy at increasing scope and seniority within investment management and regulated finance.

GitHub Stats Top Languages


πŸ” What I Do

  • Architecting governed lakehouse platforms using medallion architecture, Dagster, and dbt.
  • Designing cloud-native data solutions across AWS, Azure, Snowflake, and Databricks.
  • Building AI-ready data platforms with LLMs, RAG, Snowflake Cortex, and AWS Bedrock.
  • Establishing data governance β€” contracts, schema evolution, lineage, observability, and RBAC.
  • Building and leading data teams, from first hire through domain-oriented, multi-engineer functions.

πŸ›  Tech Toolbox

Programming & Query Languages:

Python SQL

Cloud & Data Platforms:

AWS Azure GCP Snowflake Databricks BigQuery

Data & Transformation Tools:

dbt Dagster Airflow DuckDB Polars dlt PySpark Parquet Delta Lake

AI & LLM:

OpenAI AWS Bedrock Snowflake Cortex RAG

Development & Infrastructure:

Kubernetes Docker Terraform GitHub Actions uv


πŸ† Career Highlights

  • Architected a governed medallion lakehouse and Dagster orchestration platform, cutting new source-system connector delivery from 3–5 months to 2–3 weeks.
  • Designed and shipped production Python and dbt data products with schema validation, contracts, lineage, and automated testing across multiple enterprise platforms.
  • Built and led a data function from 7 to 22 engineers, establishing roles, career paths, standards, and domain-oriented delivery.
  • Delivered CI/CD modernisation and GitFlow adoption across a 249-repo estate, unblocking a stalled release process and raising platform engineering maturity.
  • Delivered enterprise AWS, Azure, and Snowflake lakehouse platforms with RBAC, classification, and audit-ready governance across investment management, banking, lending, and energy.

πŸš€ Currently Working On

  • AI-driven data pipelines combining Snowflake Cortex, RAG, and LLMs for AI-ready platforms.
  • Data contracts and observability (freshness monitoring, volume checks) for Snowflake-backed data products.
  • CI/CD and engineering standards β€” pre-commit hooks, linting, and branch protection across data platform repos.

πŸ“Œ Featured Projects

  • github-trend-insights πŸ“Š – Data pipeline analyzing GitHub trends using dlt, DuckDB, and dbt.
  • agile-ai ⭐ – AI-powered agile project management tools.

πŸ“« Let's Connect!

Pinned Loading

  1. python-flask-with-javascript python-flask-with-javascript Public archive

    This repository contains an example app to communicate between JavaScript and Python.

    HTML 68 24

  2. notebooks notebooks Public archive

    This repo contains my public notebooks together with the Docker files to get the Anaconda environment up and running.

    Jupyter Notebook 4 4

  3. vps-provision vps-provision Public archive

    Another experiment to provision my VPS

    Shell 1 1

  4. mario-api-python-eve mario-api-python-eve Public

    Python

  5. pyspark-101 pyspark-101 Public archive

    A PySpark course to get started with the basics for a Data Engineer

    Jupyter Notebook 9 9