Filippo Pacifici is a Staff Engineer in San Francisco with 7 years of focused experience building high-scale backend systems and business-critical enterprise applications. He has led teams and driven technical direction at Sentry and Facebook, shipping reliability improvements, payment infrastructure for Messenger, and operator billing systems that required careful data-model, abuse-prevention, and integration work. Comfortable across Java, Python, PHP and C++, he combines hands-on coding with systems design and a penchant for introducing reliability culture and measurable monitoring (notably contributing metrics and indexing improvements to the widely used Sentry platform). His background includes large-scale JEE platform work at Amadeus and academic research in model-driven design, reflecting both industrial rigor and formal foundations. Colleagues rely on him for solving thorny design problems, mentoring engineers, and quickly ramping on unfamiliar languages and technologies.
7 years of coding experience
12 years of employment as a software developer
Laurea, Computer Engineering, Laurea, Computer Engineering at Politecnico di Milano
MSC, Computer Science, 4.0, MSC, Computer Science, 4.0 at University of Illinois at Chicago
Developer-first error tracking and performance monitoring
Role in this project:
Back-end & DevOps Engineer
Contributions:553 reviews, 55 commits, 133 PRs in 3 years 2 months
Contributions summary:Filippo contributed to the Sentry platform by implementing new metrics and monitoring features, specifically focusing on indexing and batch processing. They added gauges to track string lookups, timers to measure batch build times, and reorganized the metrics indexer code to improve modularity. Additionally, the user was involved in addressing issues related to rate limiting and made code changes to the ingest consumer and the options automator script. Their contributions also encompassed configuration management, particularly in the options automator script.
Contributions:2 reviews, 36 PRs, 39 pushes in 1 year 1 month
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Filippo Pacifici - Staff Engineer at Sentry (sentry.io)