# Tirza Shatz > Tirza Shatz is a Berlin-based product designer and builder with experience founding and managing products. Her portfolio focuses on AI products, agent interaction, developer experience, product judgment and hands-on delivery. This file is a guide to the public portfolio at https://tirza.me/. Follow the linked case studies for details; do not infer confidential product screens or quantitative outcomes that are not published. ## Portfolio - [Home and selected work](https://tirza.me/): Overview of Tirza's work and approach, with links to all cases. ## Case studies - [Daily Brief at FGS Global](https://tirza.me/fergus/): A media monitoring overview for client teams, developed through user research, agent-guided setup and release to relevant teams. The hackathon prototype was the starting point. - [Agent workflows at FGS Global](https://tirza.me/fergus-agents/): Translating streaming agent activity into understandable UI categories, language, progress and user control. - [X-Berg product and developer experience](https://tirza.me/kreuzberg/): Designing a first-file sandbox, organized projects and system status for an active Cloud beta built around an open-source document intelligence engine. - [X-Berg website and benchmarks](https://tirza.me/xberg-web/): Website and benchmark designs made while the product was called Kreuzberg. - [Schatzy](https://tirza.me/schatzy/): An offline neighborhood adventure product and $100 build experiment, centered on product decisions, grounded AI writing and an initial real-world playtest.