Angel Iskrev is the creative director and co-founder of proof. — an independent agency born in
Sofia, Bulgaria, and part of By The Network.

With over 12 years in the game, his work for brands like Telenor, Carlsberg, Lidl, fritz-kola, TELUS, four paws, and more has picked up 250+ awards across national and international shows.

 

He co-founded proof. in 2018. Since then, the agency has:
– won Creative Agency of the Year at FARA (2022)
– been named Digital Agency of the Year four times at IAB MiXX (2018, 2020, 2021, 2022)
– earned 10 Effie Awards, including 7 Golds

In 2025, Angel’s campaign The Witness became the first-ever Global Effie Contender from
Bulgaria. His work has been recognised at The One Show, Epica, Cresta, MAdStars, AdBlackSea, The Drum, Lisbon Ad Fest, White Square, IAB MiXX, and more — bringing in 40+ international awards.

He’s also judged almost everything that matters: The One Show, ADC*E, Lisbon Ad Fest, MAdStars, Kyiv Festival, WINA, IAB Europe, Effie Bulgaria — and chaired the creative jury at IAB MiXX Bulgaria three times.

Angel is a board member at IAB Bulgaria, guest lecturer at NBU & SoftUni, and speaker at
Webit, Digitalk, and Ad Academy Busan. Outside of advertising, he’s the voice behind 8 Olympic Games as a sports commentator for Eurosport.