Developed backend components in Java and Spring Boot, integrating PostgreSQL and Amazon DynamoDB databases, achieving a 20% reduction in critical query response time. Implemented a module for reading and processing files from Amazon S3, extracting key information and storing it in DynamoDB, increasing efficiency in massive data handling by 35%. Integrated asynchronous messaging with Amazon SQS for event processing, improving scalability and reducing latency in microservice communication. Strengthened software quality through code reviews and the creation of unit and integration tests with JUnit and Mockito, increasing test coverage and reducing production errors. Developed user interfaces with Angular, implementing reusable components, form validations, and consuming REST services, achieving a smoother user experience. Achievements: Optimized data processing time by 35% by optimizing interaction between S3, SQS, and DynamoDB. Increased unit test coverage to over 80%, reducing critical defects in production. Implemented asynchronous messaging with Amazon SQS, achieving a more fault-tolerant system capable of processing load peaks without data loss. Contributed to the development of views and components in Angular, improving user usability.

Developed and maintained microservices in Spring Boot and Java for managing user transactions and bank accounts in a payment gateway. Implemented security in the system's MVP using OAuth 2.0 and JWT, ensuring endpoint protection and reliable user authentication. Applied hexagonal architecture and reactive programming, improving the system's scalability, maintainability, and response capacity under high concurrency. Managed financial data using PostgreSQL, optimizing queries and ensuring the integrity of critical information. Achievements: Ensured a high level of security and compliance in payment flows through the integration of OAuth and JWT. Contributed to reducing latency in critical operations with the use of reactive programming. Implemented best practices of hexagonal architecture, guaranteeing a decoupled and easy-to-maintain design.