Flávio Gerab
About
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Senior Trust & Safety Leader | AI Moderation & LLM Evaluation • Child Safety • Behavioral Science | Ex-Riot Games
São Paulo, Brazil
Résumé
Jobs
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Trust and Safety ManagerPocket WorldsSep 2025 - Current (1 year 2 months)Lead Trust & Safety across product, policy, and operations for 40M+ users on Highrise and Everskies, processing hundreds of thousands of reports annually.
Own executive reporting on enforcement efficacy, revenue impact, and community protection.
Direct AI-assisted moderation end to end — policy-to-model translation, prompt governance, and human-in-the-loop review — cutting labeling time ~95% and time-to-action ~75%.
Govern the evaluation cycle behind the production classifier — human-reviewed ground truth, regression suites, and accuracy deltas gating each release; validated the Claude → Gemini migration at ~89% human agreement.
Manage a globally distributed 24/7 team of 20+, holding full repo- Program Manager - Trust and SafetyPocket WorldsMar 2025 - Aug 2025 (6 months)Shipped eight major child safety features, including age verification improvements, chat protections, and user-level controls.
Designed and launched a cross-regional safety perception study (8 regions, 7 languages, 3,400+ respondents per wave); identifying meaningful perception changes in the playerbase
Designed and evaluated A/B tests to validate feature effectiveness across regions.
Led regulatory readiness across U.S., EU, and Brazilian markets — DSA, UK OSA, COPPA, and ECA Digital — translating requirements into product and enforcement changes. - Trust and Safety AssociatePocket WorldsJan 2025 - Feb 2025 (2 months)Designed and launched a multi-region user education campaign on in-game reporting that ranked #1 in platform-wide engagement.
Drove the modernization of community guidelines to improve user safety and regulatory compliance. - Clinical PsychologistMindfulselfMar 2019 - Dec 2024 (5 years 10 months)Practiced for six years, specializing in behavioral science, conflict resolution, and crisis management — experience that later shaped my approach to online harm prevention and Trust & Safety system design.
- Player Behavior ExpertRiot GamesJan 2015 - Jan 2019 (4 years 1 month)Adapted the Good Behavior Game — a classroom behavior-management protocol validated in randomized trials — into League of Legends, reducing severe antisocial behavior by over 10% in the highest-risk player cohorts.
Shipped Acampamento Yordle, Brazil's first localized in-game event — 1M+ players in 10 days, delivered with a 30-person team.
Managed cross-functional initiatives — spanning engineering, UX, publishing, support, finance, and global leadership — across projects involving up to 30 people in multiple countries.
Owned the roadmap for community communication products, producing content (comics, videos, podcasts) that improved sentiment by 18%+, later adopted as a framework by regional teams in LATAM
Education
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- Master of Science - MSc, Experimental PsychologyUSP Universidade de São PauloJan 2011 - Jan 2014 (3 years 1 month)I strategized, designed, and implemented a comprehensive scientific study utilizing video games to investigate time perception in humans. I employed cutting-edge quantitative data analysis techniques and successfully published the findings in a peer-reviewed paper.
To accomplish this, I utilized a video game as a novel research tool and developed a robust mod for the game "Neverwinter Nights 2" from scratch using the Aurora toolset.
I executed a rigorous experimental design that ensured the collection of valid scientific data. I processed initial statistical analysis and conducted AB testing to derive insightful conclusions. - Bachelor, PsychologyUSP Universidade de São PauloJan 2004 - Jan 2009 (5 years 1 month)I am proficient in both quantitative and qualitative research methods, skilled in conducting customer research, AB testing, and statistical analysis.
I have demonstrated exceptional active listening techniques and empathy, supported by a solid scientific background and assertive communication skills.
I have honed my writing skills by crafting scientific reports, customer-facing communications, and navigating complex institutional environments.
Additionally, I have volunteered for various community services to give back to society and apply the skills and knowledge I have acquired.