Home Our community Member directory Johannes Castner


What I offer


Ponder the big issues; climate change, species extinctions, financial crises, famines etc. All of them have in common that they are human failures; a small number of humans make decisions that have tragic consequences for large numbers. The solution is collective intelligence.

Post Urban Venture Builder

Post Urban is a UK-based AI and deep tech venture builder. We work with universities and entrepreneurs to create science based technology companies.

Intelligence Factory

Data Science, Deep Learning, Machine Learning, Consulting, Training, Artificial Intelligence, Business Strategy Consulting, Project Management, Intelligent Automation, Chatbots, Computer Vision, Forecasting, Anomaly Detection, Marketing Automation, Recommendation Systems, Decision Support Systems.


Data Engineer (Google Cloud)

Ancoris is an award-winning Cloud Services Provider helping customers innovate and transform through the use of Google Cloud. The data team worked on projects in the public and private sector, with clients such as the Moorfields Eye Hospital, Limerick Council and Sigma Sports (bicycle retailer).

Data Science Manager

I worked with two excellent data scientists, in a hands-on management capacity, on a conversational experience for an insurance technology company.

Senior Data Scientist

Worked on various NLP problems with free form ebay titles. These were based on knowledge graphs as well as traditional NLP methods.

Betting Is Believing Research

As part of my masters research at Columbia, I built an experimental platform for cognitive economics experiments and I called it "Betting is Believing" (from a Charles Pierce quote "All believing is betting").

Research Assistant to Christopher Foote at the Federal Reserve Bank

I graduated with a BA in economics, right before the financial crisis of 2007 and I joined the research department of the Federal Reserve Bank of Boston, where I built econometrics software and analysed the financial crisis.


My portfolio career

Career experience

My portfolio career

Career experience


  • Interdisciplinary Problem Solving
  • Ethics of AI in Society
  • Communicating Technical Topics
  • Scalable Data Science; Tensorflow, Spark
  • Data Engineering (AWS/GCP)
  • Machine Learning Engineering (AWS/GCP)


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