José Peixoto

- AWS Messaging & Event-Driven Architecture: Built and operated asynchronous systems using Amazon SQS and SNS, enabling decoupled services, resilient message consumption, retries, and DLQ strategies in cloud-native environments. Tech: AWS SQS, SNS, Java, Spring Boot, AWS Step Functions, AWS EventBridge - Containerized Deployments on AWS: Deployed and maintained Spring Boot applications running on AWS ECS and EKS, managing container orchestration, scaling, and service stability in production. Tech: AWS ECS, EKS, Docker, Kubernetes, Spring Boot - CI/CD Automation with Jenkins: Designed and maintained CI/CD pipelines with Jenkins, automating build, test, and deployment processes to ensure reliable and repeatable releases. Tech: Jenkins, Java, Spring Boot, Maven - Backend Development with Spring: Developed backend services using Spring Boot and Spring Data JPA, focusing on clean architecture, transactional consistency, and maintainable domain models. Tech: Java, Spring Boot, Spring Data JPA, Hibernate, Maven - Legacy Systems & Modern Java: Worked across legacy Java 7 systems while leading modernization initiatives and new developments using Java 21, improving performance, security, and long-term maintainability. Tech: Java 7, Java 21, Spring Boot, Maven - High-Throughput Queue Consumers: Implemented scalable consumers for AWS SQS, handling high message volumes with fault tolerance, retries, and dead-letter queues to ensure system reliability. Tech: AWS SQS, SNS, Spring Boot, Java

- AWS Deployments: Deployed Spring Boot applications directly to AWS EC2 and managed supporting infrastructure with S3, RDS, and IAM; improved system availability and streamlined release process. Tech: Java, Spring Boot, AWS EC2, S3, RDS, IAM, Maven - CI/CD Automation: Created and maintained deployment pipelines using Bitbucket and Bamboo for Spring Boot applications, enabling automated builds and environment-specific releases. Tech: Java, Spring Boot, Bitbucket, Bamboo, Maven, AWS EC2 - Modernized Core Platform: Upgraded every project to the latest Java 17 + Spring Boot 3 stack, hardening security and cutting average API latency by 25 %. Tech: Java 17, Spring Boot 3, Maven, Docker - Front-end Evolution: Led two-step migration from Angular 11 → Thymeleaf → HTMX, trimming bundle size by 70 % and reducing first-paint time from 2.8 s to 1.1 s on moderate connections. Tech: HTMX, Thymeleaf, JavaScript, Webpack - High-speed Caching Layer: Introduced Redis across critical services, slashing database hits by 60 % and stabilizing peak-hour response times. Tech: Redis, Spring Data Redis - Database Performance Overhaul: Tuned 100 % of Oracle PL/SQL packages; rewrote complex queries, added indices, and refactored pipelined functions, cutting the runtime of a flagship report from 10 min to 30 s. Tech: PL/SQL, Oracle 19c, SQL Developer

- Requirements Analysis & Full-Stack Development: Interpreted client documentation to extract functional requirements and deliver complete systems using Java, JSF, Hibernate, and Spring Boot. Ensured clean architecture and modular design across multiple applications. Tech: Java, JSF, Spring Boot, Hibernate - PL/SQL Engineering & Query Optimization: Designed and maintained Oracle database objects including functions, procedures, triggers, packages, and indexes. Beyond development, I actively sought performance improvements, applying SQL tuning techniques that reduced query cost by up to 50% in several critical reports. Tech: Oracle, PL/SQL, SQL Developer

- Requirements Analysis & Full-Stack Development: Interpreted client documentation to extract functional requirements and deliver complete systems using Java, JSF, Hibernate, and Spring Boot. Ensured clean architecture and modular design across multiple applications. Tech: Java, JSF, Spring Boot, Hibernate - PL/SQL Engineering & Query Optimization: Designed and maintained Oracle database objects including functions, procedures, triggers, packages, and indexes. Beyond development, I actively sought performance improvements, applying SQL tuning techniques that reduced query cost by up to 50% in several critical reports. Tech: Oracle, PL/SQL, SQL Developer

- Multi-System Healthcare Integration: Built real-time data exchange among three independent healthcare platforms as part of the first integrated healthcare system in Brazil, enabling unified patient data access across institutions. Tech: Java, Spring Boot, PL/SQL - Technical Leadership: Managed and guided developers throughout the project, defining system architecture, writing technical documentation, and establishing development standards and best practices using Java, Spring, and PL/SQL. Worked within a Scrum-based agile team, applying SOLID principles, conducting code reviews, and ensuring code quality through automated testing with JUnit and Mockito. Tech: Java, Spring Boot, PL/SQL, SOLID principle, JUnit, Mockito

- PL/SQL Consulting & System Development: Provided consulting services in PL/SQL programming, delivering customized functionalities and solutions based on client needs. Also participated in the development of systems using Java. Tech: PL/SQL, Oracle Database, Java - Oracle Forms/Reports & Requirements Analysis: Developed features using Oracle Forms and Reports, and conducted requirements analysis directly with clients to map processes and propose tailored solutions. Tech: Oracle Forms, Oracle Reports - ERP Implementation & User Training: Supported ERP system implementation across various clients, ensuring alignment with business processes and delivering training sessions to onboard end users effectively.

- Supported the Tasy healthcare system and conducted user training on system tools. Developed reports using Oracle 12c and participated in ERP system implementations. Designed and developed APIs and real-time integrations using Java, Spring Boot, and PL/SQL. Contributed to a key integration project connecting medical consultations with client budgeting, which reduced patient stay time by 50% and streamlined operational workflows across departments.

- Assisted in the maintenance of SQL Server 2012 databases. - Developed desktop systems using Java, Hibernate, and the MVC pattern. - General Support