Olaya Argüeso Pérez

Olaya Argüeso Pérez is editor-in-chief at CORRECTIV, where she leads the international investigations since 2019. 

Olaya Argüeso Pérez is editor-in-chief at CORRECTIV, where she leads the international investigations since 2019. After more than a decade reporting about economy, business and finance at the most important radio network in Spain (Cadena SER), Olaya decided to expand her expertise into data journalism and joined the Lede Program at Columbia University. After joining CORRECTIV as a reporter, she took part in cross-border investigations like The CumEx Files and Grand Theft Europe, which exposed multi billion tax frauds happening all over Europe. In 2021, together with her colleague Justus von Daniels, she was appointed Editor In Chief of the Year in Germany.

Mar Cabra

Mar Cabra is a Co-founder, chairman of the Board and trainer at The Self-Investigation.

Mar Cabra is a Co-founder, chairman of the Board and trainer at The Self-Investigation. She is a Pulitzer prize-winning journalist, digital wellness educator and Acumen fellow working on raising awareness on how technology is changing the way we interact with ourselves, each other and as a society. She writes a column in Spanish newspaper El Confidencial on this topic. She’s committed to creating a healthier working culture in journalism to prevent others from burning out like she did after leading the technology and data work for the Panama Papers investigation.

Sam Joiner

Sam Joiner leads the visual storytelling team at the Financial Times — an interdisciplinary group of journalists combining data, design, coding and reporting skills.

Sam Joiner leads the visual storytelling team at the Financial Times — an interdisciplinary group of journalists combining data, design, coding and reporting skills. The team focuses on projects where visual elements play an essential role in communicating the story, working on everything from investigations to explainers across news and features.

In 2022 the team won a Press Gazette Future of Media Award for their coverage of the Ukraine war. They have also won multiple awards for The Climate Game.

Sam was previously head of data and digital storytelling at the Times and the Sunday Times.

Milica Stojanovic

Milica Stojanovic is a journalist for BIRN's Balkan Insight and Balkan Transitional Justice. She also regularly holds digital security training for local journalists in Serbia.

Before joining BIRN, Milica worked, for five years, at the Center for Investigative Journalism of Serbia (CINS), where she covered topics such as the judiciary, energy and public spending. Prior to CINS, Milica worked as a journalist and the daily/weekend editor at the online news portal Telegraf.rs.

As a member of CINS team, she won the 2017 European Press Prize for investigative journalism. She got an annual award for investigative journalism in 2015 from the Independent Association of Journalists of Serbia. She holds seven domestic and international awards in total, alone or as a member of CINS team, for stories about the judiciary, corruption, or the environment.

Milica has MA in Journalism from the Faculty of Political Sciences, University of Belgrade. She speaks Serbian and English.

Marija Ristic

Marija Ristic is an investigative journalist, with a decade-long experience in war crimes reporting, open-source research and emerging technologies.

She is currently a manager at Amnesty International Crisis Evidence Lab, running Digital Verification Corps – a network that supports Amnesty International teams in human rights documentation and fact-finding. Evidence Lab brings together investigators, engineers, developers and others to pilot new and expanding tools such as artificial intelligence, remote sensing, weapons identification and big-data analytics. Before joining Amnesty, Marija was an executive director of Balkan Investigative Reporting Network, leading media non-profit in Southeast and Central Europe. For her work as a journalist, she received numerous awards, including the Reporters Without Borders Annual Press Freedom award.  She graduated from Geneva Academy for International Humanitarian Law, as previously held fellowship positions at Columbia University New York and Free University Berlin.