• Co-designed and built Block’s centralized data retention platform, automatically deleting 250K+ unused tables (~3 PB) and reducing storage costs by $500K+ annually.

• Architected a centralized encrypted-data vault platform replacing fragmented implementations across dozens of teams and standardizing secure data handling across the company.

• Technical lead and architect for Square’s 0→1 internal banking platform powering savings and financial services for 200K+ sellers, ~$400M in total balances, $3.86B in deposits, and ~91% CSAT (highest among Square products).

• Designed core banking primitives including account lifecycle, money movement, onboarding, savings automation, and regulatory controls across multiple countries.

• Led cross-org delivery across risk, compliance, treasury, legal, finance, audit and operations to launch regulated financial products.

• Co-led migration of a 50 TB Apache HBase cluster to Google Cloud Spanner, scaling write throughput to 2K QPS while improving reliability and reducing operational overhead.

• Designed backend systems powering sales and billing analytics for all Square sellers.

• Delivered critical reporting capabilities including Delivery Fulfillment (accelerated during COVID‑19), Cash App integrations, partial payments, fractional quantities, and compliance tooling for CCPA/GDPR.

• Built a distributed caching layer for seller transaction queries, eliminating search timeouts and resolving session-management CPU stalls.

• Designed a company-wide infrastructure ownership tracking system enabling automated host accountability across datacenter fleets.

• Built an automated patching system capable of upgrading the entire infrastructure fleet (10,000+ servers) safely at regular intervals. Some of the servers were not upgraded in 7+ years.

• Designed and deployed a cross‑coast redundant package mirroring system (rpm‑server) to improve reliability of infrastructure dependency distribution.

Co‑founded and led ERG with 500+ members; grew to multiple city chapters, organized events with CEO/CFO/CTO/senior leaders/external speakers, sellers/artists/influencers, managed budgets, and built mentorship programs impacting 140+ people.

• Welcome to Block presentation

• Presented in company wide town halls, eng all hands

• On promo panel, reviewed dozens of promo packets

• Mentored dozens of engineers

• Conducted hundreds of interviews

• Campus recruiting