Mateo Velez Email & Phone Number

San Francisco, Ca, Us

- Developed a key moment system for virtual events, analyzing user interaction data and integrating AI analysis, achieving efficient data processing by using Kafka Pub/Sub, NodeJS, Oracle SQL, ElasticSearch, GCP, and Docker.- Designed and implemented multiple data warehouses and data background workflows for big data analysis using Kafka, Oracle, and NodeJS.-Enriched analytic system by developing new dynamic graphs and BI reports from daily events by using real-time data using Logi Analytics, ReactJS, Javascript, Typescript, Java, and Maven.- Reduced the analytics app loading times by 80% by restructuring the SQL Queries with better approaches Oracle, and PostgreSQL.- Migrate the application core module from Oracle-based code to NodeJs microservices with PostgreSQL improving data fetching in current technologies and migrating features to the latest technologies ReactJS, Apache ECharts, Logi Analytics, ElasticSearch, GCP, and Docker.- Increased the Analytics app performance and UX by 70% by implementing new cache services for data fetching using Java, Maven, Logi Analytics

Cali, Valle Del Cauca, Co

- Developed and designed a new enterprise-level web app with microservices architecture and horizontal scalability, as measured by faster loading times, and managing multiple requests for massive export groups of classified and organized data, by integrating ETL services and utilizing ReactJS, Java/Spring Boot, JPA, PostgreSQL, Docker, Postman, Swagger, Python.- Developed ETL services for massive data sources of over 21 million users, as measured by accurate and efficient data processing, by extracting, and transforming data related to pension, healthcare, and housing using PostgreSQL, and Java.-Improved team efficiency, by 80% project completion times, by implementing Scrum methodology.

Cali, Valle Del Cauca, Co

-Led the analysis, design, and development of an automated reporting system by analyzing source data from a Smartflex ERP in utility companies, creating legal consumer reports for over 2 million clients. As a result, we improved reporting time by 70% for the government regulations, using Oracle SQL, and PLSQL.-Increased process efficiency in billing, payments, and amortization by 80% by reprogramming SAP integrations in web app APIs using Java, Prime Faces, SOAP, and Maven.-Developed new data visualizations, and screens to display relevant information by improving the UX/UI components by reducing extra steps and adding fluency in the functionality process flow Java Spring, Prime Faces, JavaScript, and Oracle SQL (PLSQL). -Increased the number of users on electricity pre-paid web app services by 80%, by developing integrator microservices to communicate with SOAP from Smartflex ERP and converting them into REST API using Java SpringBoot, Maven.

Cali, Valle Del Cauca, Co

- Enhanced Smartflex ERP support for a utility company, as measured by a 40% reduction in billing, charges, collections, and workforce-related errors, by resolving software issues in the app using Oracle SQL (PLSQL).- Restored an essential web application for contractors of two major electric companies, supporting over 1 million people, as measured by operational functionality and 100% data integrity in billing and payments, by fixing errors in the UI components and business model rules, using Java, Spring, Prime Faces and Oracle SQL (PLSQL).- Increased client communication effectiveness, as measured by a 75% improvement in resolution times and accuracy, and client satisfaction, by creating a creative standardized template for error reporting and feature requests.

Systems Engineer, Bachelor'S Degree In Systems Engineer

Student, Data Science Diploma