Data scientist at Nexer Insight

Jonathan Jayes

PhD in economic history from Lund University. I turn messy text into data that can answer a question.

Jonathan, grinning and holding up a peace sign on a running track after a race

About

I'm a data scientist at Nexer Insight. Before that I spent four years on a PhD in economic history at Lund University, looking at how electrification shaped careers and labour markets in early twentieth-century Sweden.

The thread running through both is text as data. Biographical dictionaries, census returns, company reports and patent records all hold answers, if you can get them out of the PDF and into a table. These days that usually means a language model, a schema and a lot of checking.

I grew up in South Africa and studied economics at the University of Cape Town and Stellenbosch University before moving to Sweden.

“I enjoy some of the old and I enjoy the new. And if I can find a balance between it, that's where I find my satisfaction.”

Have a look around

Blog

Posts on data, economic history and the odd scraping project, going back to 2021.

blog.jonathanjayes.com

Talks

Slides from talks, seminars and workshops, plus course material from teaching.

talks.jonathanjayes.com

Projects

Scrollytelling pieces, websites and tools, each with a link to the code.

projects.jonathanjayes.com

Recipes

My personal cookbook. Mostly things I make more than once.

recipes.jonathanjayes.com

Insta

The latest photos from Instagram, for fun.

insta.jonathanjayes.com

Work

  1. 2025 – now
    Nexer Insight

    Data Scientist

  2. 2022 – 2025
    Codera Analytics

    Data Scientist

  3. 2022
    Fathom Data

    Data Science Intern

  4. 2020 – 2021
    Laboratory for the Economics of Africa's Past

    Researcher with Prof. Johan Fourie

  5. 2019 – 2020
    FTI Consulting

    Junior Economist

Study

  1. 2021 – 2025
    Lund University

    PhD, Economic History · Supervised by Prof. Kerstin Enflo

  2. 2020
    Stellenbosch University

    Master's, Economics · Cum laude

  3. 2018
    University of Cape Town

    Honours, Economics

  4. 2015 – 2017
    University of Cape Town

    Bachelor's, Economics and Economic History

Get in touch

The quickest way to reach me is email or LinkedIn.