Rafael Polo is a Software Engineer & Tech Lead with 20+ years building full-stack products across Brazil, Germany, Portugal, and Switzerland. From data pipelines turning public datasets into tools for journalists and researchers, to leading engineering teams and modernizing interfaces, infrastructures and platforms - now amplified by AI/LLM.
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Open-source platforms, tools and data visualizations:
baseldosdadosOrganized ~675 GB (533 datasets) of Brazilian open
data2026
BraVizVisualize in a map the 8M Brazilian registered
companies2026
datativeData Investigation platform with force graphs2026
helvetiscanScanner of 2.5M+ Swiss .ch domains &
vulnerabilities2026
swissvizAll Swiss companies on interactive map2026
DependencyMapWebGL force-graph of .ch domains DNS
dependencies2026
malafaiaUpdated map of a religious empire for
Journalists2026
PT2026Experimental dataviz of polarized Portuguese
elections2026
Pegadas TigrinhoCorporate network of Tigrinho gaming Scam in
Brazil2025
VISOVisualize parliamentary expenses with rich dashboard
& live SQL2025
fincrimeVisualize corporate networks cited as
money-laundering2025
IBGE13Analyses of 150 years of Brazilian census and
statistics2025
sumariaYouTube transcript summarizer with LLM2025
RAIS500 companies with most employees in BR2025
FribaNova Friburgo 3D population2025
Dataviz HubCartography of territories, networks, and
demographics2025
VERAΞFIKOAwarded Web3 SmartContracts bridging fees into
carbon credits2022
speculariVisual crypto arbitrage analysis between exchanges 2022
Acervo MPBSpotify-alternative with 100 years of Brazilian
Popular Music2020
TribunaOrganized all TSE electoral DB for
journalists2018
RendaFramework for crypto-economic experiments2018
ConnectasInvestigation published on The Intercept2018
Exposing the InvisibleInvestigation resources for Tactical Tech2016
Av. Atlântica 1101Beautiful visualization for a RJ luxury
property2014
SteganosConvert any digital file as an image (Rust
rewrite)2014
Mostre!me CulturaAll Ministry of Culture data visualizations2013
Água na EscolaWater education platform for RJ Secretary of
Environment2013
rastrosVisual experimentation with motion detection 2012
WebDoc GraffitiAward-winning Web-Documentary project2012
Pensar PúblicoPublic policy Studio platform2012
Gráfica UtópicaMain RJ Printing collective website2011
Razão e AmbienteExhibition website for Museu de Arte Moderna of
SP2010
Consulta NaturalSPARQL/Google Talk NLP conversational agent2009