J++

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Rethinking journalism with data.

J++ is an international team of data journalism specialists, with offices in Stockholm and Porto. The team integrates experts in research, data analysis, data-driven storytelling, newsroom programming and full-stack design. J is for Journalism. Journalism++.

Rethinking journalism with data.

Academy

Learn coding for journalists

Our by far most popular course “Coding for journalists” is back in March 2026
Build an editorial data team

We help you build a team of data journalists.

Show older courses++

Team

Ana Isabel Carvalho

Porto
Jens Finnäs

Stockholm
Ricardo Lafuente

Porto
Martin Olsson

Stockholm
Leonard Wallentin

Stockholm

Manifesto

The J++ Network directs its actions according to a manifesto that lays out its vision and principles, proposing a consistent and ethical perspective over the practice of data journalism.

Read our manifesto++

Academy

Team

Ana Isabel Carvalho

Jens Finnäs

Ricardo Lafuente

Martin Olsson

Leonard Wallentin

Manifesto