Jul 2024 – Jul 2025 · 1 yr · San Francisco Bay Area · Remote

• Led comprehensive B2C technology transformation for the leading financial literacy platform. Oversaw engineering teams responsible for Payments, Risk & Compliance, Card Processing, Card Issuance, Customer Support Engineering, Accounts, Plans & Notifications, and B2B Partnerships portfolio driving enterprise financial institution integrations.
• ➤ AI & Fraud Detection: Oversaw strategic rollout of Databricks AI models on AWS for real-time transaction fraud detection, modernizing legacy risk management systems and enhancing customer protection capabilities.
• ➤ Platform Modernization: Led successful splitting of monolithic AWS RDS database into 12 domain-specific databases across multiple regions, eliminating systemic reliability risks and aligning with micro-services architecture principles.
• ➤ Quality & Automation Excellence: Implemented unified testing framework achieving 5x reduction in functional bugs through automated testing of critical customer flows, significantly improving platform stability and user experience.
• ➤ Cultural & Process Transformation: Re-architected incident management and response processes company-wide, fundamentally shifting detection, triage, mitigation, and post-mortem analysis culture. Established unified quality improvement processes focused on end-to-end test automation across mobile and backend platforms.

Mar 2024 – Jul 2024 · 4 mos · San Francisco Bay Area · Remote

• Directed the Data Movement & Streaming organization responsible for enterprise data architecture, ensuring seamless data flow from OLTP applications to Snowflake and GEICO's internal Data Lake built on Apache Iceberg on Azure, plus integration with GEICO Data Warehouse systems. Left after 4 months to join a startup.
• ➤ Organizational Excellence: Revamped hiring processes across the entire data infrastructure organization, establishing scalable talent acquisition frameworks and improving engineering team quality and diversity.

Jul 2023 – Mar 2024 · 8 mos · San Francisco Bay Area · On-site

• Progressed through multiple leadership and technical roles, culminating in Director of Engineering positions. Architected, built, and scaled critical platforms powering PayPal's global operations, developer ecosystem, and payment processing infrastructure serving billions of transactions and hundreds of billions in Total Payment Volume (TPV).
• ➤ Developer Platform Leadership: Managed primary DevOps platforms serving 5,000+ developers across all PayPal brands, including global staging environments on Google Kubernetes Engine (GKE) and ephemeral testing frameworks.
• ➤ Testing Innovation: Pioneered component testing framework with isolated capture and playback capabilities, achieving 10x speed improvement compared to traditional managed staging approaches, dramatically accelerating development cycles.
• ➤ Infrastructure Optimization: Managed Stage and TestEnv platforms enabling isolated microservices testing and n-version dependency management, supporting PayPal's continuous deployment culture.

Jul 2020 – Jul 2023 · 3 yrs · San Francisco Bay Area · On-site

• ➤ Enterprise Platform Modernization: Launched Unified Configuration Platform replacing 3+ unreliable legacy systems in under 6 months, now supporting 2,500+ micro-services with enhanced regulatory compliance and availability.
• ➤ Cross-Brand Integration: Created EventHub platform seamlessly bridging traditional PayPal messaging systems with CNCF Cloud Events, enabling event synchronization across PayPal, Venmo, Braintree, and Honey brands globally.
• ➤ Global Routing Infrastructure: Played critical role in PayPal's China datacenter infrastructure buildout, developing Egress Router with specialized encryption solutions in 2 months for cross-geo public internet RPC, self-contained topology systems, and synchronized operations without code/config drift.
• ➤ API Gateway & L7 Routing Platform Modernization: Led complete overhaul of PayPal's routing infrastructure powering api.paypal.com and www.paypal.com, developing new Edge Router in Golang for traffic engineering with CDN integration. Unified handling of web and API traffic architecturally, established SRE teams for operational excellence, and implemented comprehensive DDoS protection strategies moving core routing/filtering functionality to POP locations. Improved site reliability from 99.9% to 99.999% across 2,500+ applications while ensuring resilience during peak traffic periods including Cyber 5 and high-volume attack scenarios.
• ➤ Massive Scale Processing: Scaled Kafka-based streaming platforms to reliably process 1.5T+ daily messages with 99.99% availability in active-active configurations, supporting critical analytics, risk models, and OLTP data synchronization.
• ➤ Topology Architecture: Rearchitected core topology platform connecting 3,000+ microservices without service interruption, enabling PayPal's distributed systems to scale efficiently.

Apr 2017 – Jul 2020 · 3 yrs 3 mos · San Francisco Bay Area · On-site

• ➤ Messaging Platform Strategy: Defined and executed comprehensive 3-year messaging platform evolution, reducing portfolio from 7 legacy products to 2 modern, reliable platforms while maintaining business continuity.
• ➤ Operational Excellence: Managed reliable messaging platforms processing 1B+ daily messages including PayPal's entire Total Payment Volume (TPV), ensuring payment transaction reliability and customer experience.
• ➤ Database Scaling Innovation: Engineered horizontal scaling solution for PayPal's core MONEY transaction database in under 2 months , ensuring platform stability during peak holiday traffic by working across 50+ teams.
• ➤ Complex Migrations: Successfully executed seamless datacenter migration of entire messaging infrastructure without downtime, despite significant complexity from legacy systems and interdependencies.
• ➤ Global Workforce Strategy: Implemented multiple rounds of strategic workforce relocations across platform portfolios, successfully migrating entire platforms to different global locations while maintaining reliability and customer experience.

Jul 2016 – Apr 2017 · 9 mos · San Francisco Bay Area · On-site

• ➤ Card Processing Architecture: Designed highly available System of Record (SoR) for PayPal's Card Processing Platform using combination of Apache Cassandra and Oracle backends, ensuring data integrity and performance.
• ➤ Data Consistency Innovation: Architected "eventually consistent" model ensuring integrity through advanced journaling and reconciliation of failed/aborted transactions, maintaining financial accuracy at scale.

Jul 2013 – Jul 2016 · 3 yrs · San Francisco Bay Area · On-site

• ➤ Platform Architecture Leadership: Served as architect for PayPal's Card Processing Platform handling 1B+ monthly transactions with <50ms P99 latency , responsible for design, development, and code reviews for 40-engineer team.
• ➤ Performance Optimization: Led performance improvements for next-generation Payment Planning service resulting in 2x latency reduction , and enhanced Payment Fulfillment service quality reducing testing overhead.
• ➤ High-Scale Transaction Processing: Built systems processing $44B+ quarterly TPV with sub-50ms response times, ensuring PayPal's payment processing competitiveness and reliability.

Sep 2007 – Jul 2013 · 5 yrs 10 mos · Natick, MA · On-site

• Led advanced engineering initiatives for MATLAB and Simulink platforms, focusing on meta-modeling infrastructure, distributed systems, and performance optimization for enterprise-scale engineering applications.
• ➤ Meta-modeling Infrastructure: Architected and implemented meta-modeling services including XMI serialization, model merging, and transformation, achieving 40x speedup in model serialization for large-scale user models.
• ➤ Extensibility Framework: Designed and implemented extensible specification framework for asynchronous task execution within Simulink, eliminating need for custom blocks and improving developer productivity.
• ➤ Engine Modernization: Architected dynamic plugin interface enabling major refactoring of Simulink's engine infrastructure, eliminating compile-time dependencies between components and improving maintainability.
• ➤ Distributed Architecture: Developed robust support for designing interfaces to Simulink models, facilitating seamless deployment over distributed architectures for enterprise applications.

May 2005 – Aug 2005 · 3 mos · Greater Seattle Area

• ➤ Designed a prototype deployment tool that generates WiX files for applications built using the Distributed System Designers.
• ➤ Analyzed deployment using VS 2005, identified gaps, provided a road-map for the next version and published a MSDN whitepaper to guide users of VS 2005.

Jan 2003 – Sep 2007 · 4 yrs 8 mos · Nashville Metropolitan Area

• ➤ Design and implement tools and techniques to allow model-driven development of applications built using component middleware technologies
• ➤ Design and implement optimizations in middleware using application specific information available in the models.

Jan 2000 – Jan 2002 · 2 yrs · Greater St. Louis

• Research on new techniques in composition and deployment of CORBA Component Model (CCM) components using XML annotations.