• Led an international team of 8 engineers on a project critical to the company’s success, developing aJava/Tomcat service linking customers’ contact centers to our company’s cloud• Architected a Consistent Hashing-based mechanism, enabling the application to scale to 100,000+ userswhile ensuring high availability through session persistence in Cassandra• Facilitated onboarding of more than 25 engineers through mentoring, personal consultations, extensivewritten documentation and tech talks• Significantly contributed to the design of a push notification delivery system for iOS devices, allowing thecompany to retain its customer base despite new iOS restrictions

• Served as the team’s foremost technical expert, spearheading the implementation of core features in acalling application using Java, Tomcat, and Nginx, while guiding and mentoring other team members• Conducted comprehensive traffic testing using JMeter and implemented crucial optimizations enablingthe application to service 10,000+ users per node• Refactored 60% of the application’s core codebase, ensuring safer, more efficient future code changes foryears to come• Ensured FIPS 140-2 compliance for the application by integrating appropriate security librariesthroughout the system

• Addressed over 250 issues in a complex IP telephony application, contributing to the release of multipleservice packs as a top performer