About

Stelios Frantzeskakis is a Staff Engineer at Perry Street Software, publisher of SCRUFF and Jack’d, serving a community of over 40 million members worldwide.

He has been leading and developing mobile apps for more than 10 years, with a strong focus on architecture and testability across platforms. He’s passionate about Test-Driven Development, Behavior-Driven Development, Extreme Programming, Domain-Driven Design, and Clean Architecture.

He enjoys speaking at technical conferences and writing about architecture, testing, and developer experience.