Professional Data Visualization

Turning Data into visuals

ABOUT
I'm Tamas Szemann a professional dataviz expert. I understand the power of data and how it can drive decisions, shape strategies, and unlock new opportunities.

Currently managing a longterm project for the European Climate Foundation, bringing expertise for partners of the foundation.

Before I worked for the largest online portal, Index for seven years in a lead dataviz role. Worked for the investigative portal Atlatszo as a contractor for two years.

My freelance portfolio includes working on projects for NGOs such as the Hungarian Helsinki Committee, OCCRP (Organized Crime and Corruption Reporting Project), European Climate Fundation, K-monitor (Anticorruption watchdog), The Engine Room (International tech support organisation), WWF Hungary, Greenpeace Hungary, Energiaklub (Climate Policy Institute Aplied Communications), MEHI (Hungarian Energy Efficiency Institute).


Built-up Lands Extent and Change
Lake Balaton and Budapest | 2000-2020

Housing in Hungary

Report on housing for Periféria Központ

Pandora Papers 
Is Your Neighbor a Shell Company?
interactive story

for OCCRP (Organized Crime and Corruption Reporting Project)
SpeakerCamera
Property price boom in Budapest
Change in average sqm prices by streets, based on actual sales

for index

Birth experience survey

for K-Monitor

Danube river basin
SpeakerCamera
China Tobacco Goes Global
Illegal Chinese Cigarettes Flooding Latin America Flow Through Panama / What is China Tobacco?

for OCCRP (Organized Crime and Corruption Reporting Project) 
Cemented into Their Seats
interactive site and social media campaign

for the Hungarian Helsinki Committee

SpeakerCamera
Biomass campaign
Social Media Campaign - Precious natural woods in the fire wood

for WWF
The Engine Room
Website design

for The Engine Room
What you get for last year's price
Food inflation in Hungary, 2022

for Atlatszo
The cost of the Apollo program
An attempt to show how the money spent on the Moon landing compares to other large projects and events from the past few decades.

for index
Energy efficiency of Budapest
for Metropolitan Research Institute and the Budapest Climate Agency, 

Other works

  • for the European Climate Fund

  • for WWF

  • for Atlatszo

  • for Atlatszo

  • for Atlatszo

  • for the Hungarian Energy Club

  • for Atlatszo

  • fro REKK

  • for ELTE Meteorology

  • for Green Investments

  • for Atlatszo

  • for Pandemic Response

  • for Atlatszo

  • for Pandemic Response

  • for Atlatszo

  • for Atlatszo

  • For a Supreme Court petition

  • for Atlatszo

  • for Green Policy

  • for MEHI

  • for REKK

  •  

    for the Hungarian Helsinki Committee

  • for Atlatszo

  • for Atlatszo

  • Social Media Campaign project Management for Greenpeace (art by Dora Nemeth)

Services

 

Processing Data

Efficiently process large data sets to uncover valuable insights.

 

Finding the Story

Having an extensive experience in news media, I'm capable of finding news worthy stories in data and shaping the massage for its' special needs, strengthening your story.

 

Visualizing the Story

Create stunning visualizations that bring your data stories to life. Adjusting formats for the specified communication channels.

  • Budapest, Hungary