# Russell Razo Carranza > Sr Software Engineer at Prepared Location: San Jose, California, United States Profile: https://flows.cv/russellrazocarranza I am a Senior Software Engineer with over 15 years of experience building the high-performance backend systems that power global brands and mission-critical services. My career has evolved from a deep foundation in the Java/JVM ecosystem to architecting distributed, fault-tolerant environments at scale—from the high-traffic e-commerce engines of apple.com to life-safety 911 data pipelines. Throughout my career, I’ve navigated the unique challenges of both enterprise giants and high-growth startups. I take a "high-ownership" approach to engineering, focusing not just on writing clean code, but on delivering measurable business ROI. This includes: * Cost & Operational Efficiency: Re-architecting platform components to reduce cloud spend by 35%+ and automating manual toil to turn a 3-hour process into a 5-minute workflow. * System Architecture: Leading the design of multi-tenant, multi-datacenter marketplaces and real-time communication systems using Java, Go, Kafka, and Kubernetes. * Mission-Critical Reliability: Engineering systems where failure isn't an option, such as automated emergency response tools for 911 dispatchers. I am a lifelong learner and a collaborative partner who enjoys mentoring teams, influencing technical strategy, and solving complex distributed systems problems with modern stacks like Java 21, Go, and GCP. Core Expertise: Java (21), Go, Distributed Systems, Microservices, Cloud Infrastructure (GCP/AWS), Kubernetes, Kafka, and Database Design (SQL/NoSQL). ## Work Experience ### Software Engineer @ Prepared Jan 2025 – Present | San Jose, CA * Role Context: As a core member of the call-handling and call-taking teams, I focus on the high-stakes intersection of real-time communication and emergency services. * Key Achievement: Architected a high-concurrency VOIP telephony system (AWS) integrating gRPC (Go), Kamailio, RTPEngine, and NATS for backend signaling, with React and LiveKit for the UI. * Impact: Engineered an automated abandoned-call response system that saved critical time for 911 dispatchers, allowing them to prioritize life-safety emergencies. * Collaboration: Partnered on the evolution of audio and data pipelines to ensure resilient, low-latency call processing for first responders. ### Staff Software Engineer @ Keebo Jan 2022 – Jan 2025 | California, United States * Impact: Spearheaded cloud infrastructure re-architecture that delivered a 35%+ reduction in operational spend across GCP and Snowflake. * Efficiency: Automated environment provisioning, slashing manual toil from 3 hours to under 5 minutes with a 99% reliability rate. * Product Growth: Led the implementation and launch of the Keebo Snowflake Native App (Python/Streamlit), expanding the company’s marketplace footprint. * Leadership: Acted as a strategic technical advisor and one of the first 20 engineers, influencing feasibility and effort estimation for high-priority initiatives. * Technical Stack: Developed core services using Java, Golang, and Google Cloud (GCP). ### Staff Software Engineer @ Medallia Jan 2022 – Jan 2022 | San Mateo, CA ### Sr Software Engineer @ Medallia Jan 2017 – Jan 2021 | San Mateo, CA * Architectural Ownership: Early member of the engineering team that architected the Medallia Apps Marketplace, a distributed, multi-tenant, and multi-datacenter system. * Data Strategy: Designed and implemented a highly available data-processing pipeline for complex transformation and integration of global customer data. * Tech Stack: Scaled the marketplace ecosystem across global regions using Java EE, Spring, Kafka, Cassandra, and PostgreSQL. ### Sr. Software Engineer @ Apple Jan 2015 – Jan 2017 | Sunnyvale, CA * Impact: Led the development of the Centralized Web Client and collaborated on the architecture and implementation of the backend services for a global RESTful CMS, supporting zero-downtime publishing for apple.com. * Specialized Systems: Engineered subsystems for Security (AuthN/AuthZ), Search, and Data Asset Portability. * Innovation: Built a high-performance Image Service (Java/Node.js) and utilized Machine Learning to reverse-engineer legacy logic for 100% backwards compatibility. ### Sr. Software Engineer @ Dell Jan 2013 – Jan 2014 | San Jose, CA * SaaS Delivery: Delivered full-stack features for Dell Cloud Client Manager using a Java Enterprise (JEE) stack. * CI/CD Leadership: Spearheaded the transition to automated pipelines using Maven, Jenkins, and Nexus, significantly improving deployment velocity. ### Sr. Software Engineer @ Apple Jan 2010 – Jan 2013 | Cupertino, CA * E-commerce: Engineered backend services for the Apple Online Store to support high-traffic global engagement. * Feature Design: Designed customer-facing modules including Ratings & Reviews, Apple Support Community, Trending Wall, and the "Ask a Specialist" real-time tool. * Social Discovery: Developed social discovery and sharing features to drive interaction across the platform. ### Java Lead Developer @ HP Enterprise Services Jan 2009 – Jan 2010 | Mexico City Area, Mexico Led the Java development effort for the 'Technological Modernization for Customs, Second Wave' project, a team of 20 engineers. This project modernized the Mexican Customs Department's railway import management system, migrating from outdated 4gl and C# applications to a modern SOAP and Java-based architecture, aiming for high availability and scalability. • Led the design and implementation of SOAP web services using Java 5, Axis2, Spring, Hibernate and iBatis. • Developed core business logic using JRules. • Integrated IBM MQ and Message Broker to create a robust and scalable messaging infrastructure for handling high volumes of import transactions. ### Java Developer @ Indra Jan 2006 – Jan 2009 | Mexico City Developed and implemented enterprise-scale Java applications for global clients including BBVA, DuPont, and CONSAR. Developed multiple Java-based web applications for private companies like DuPont, BBVA, AltiusPAR and Azertia; and for the government agencies PROCESAR and CONSAR. ## Education ### Bachelor's degree in Computer Software Engineering Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM - CEM) ## Contact & Social - LinkedIn: https://linkedin.com/in/russell-razo --- Source: https://flows.cv/russellrazocarranza JSON Resume: https://flows.cv/russellrazocarranza/resume.json Last updated: 2026-04-10