Spearheaded comprehensive AWS EMR evaluation initiative involving production benchmarking across 1000+ jobs, and cost-performance analysis that informed the strategic decision not to adopt EMR, saving estimated $75K daily in potential cost increases

Designed and implemented fallback-to-On-Demand capability that automatically switches from spot to on-demand instances during capacity shortages, protecting 1200+ business-critical clusters from spot market volatility and reducing on-call incidents by 60%

Established technical mentorship program across distributed teams (Berlin, São Paulo), promoting 3 engineers to senior roles and creating bi-weekly knowledge-sharing sessions that became standard practice across data platform organization

Architected self-serve anomaly detection platform adopted by 50+ teams across 100,000+ daily jobs, reducing data quality incidents by 70%

Designed and implemented diagnosis and auto-remediation system that reduced mean time to resolution for data pipeline failures from 90 mins to 15 mins, improving platform SLAs and enabling the platform to scale without proportional headcount growth

Led cross-functional LGPD (GDPR in Brazil) compliance initiative spanning data platform, security, legal, and product engineering teams, architecting privacy-compliant caching layer affecting 60M+ customer records

Collaborated with product and field teams to define data requirements for new markets, translating complex public health needs into technical specifications and ensuring the data platform could adapt to different regulatory requirements across countries.