RENATO DE SANTANA SILVA

The projects are focused on the payment system ecosystem, requiring high availability and low latency. Technologies used in the project include Spring Boot, Java 17, Elasticsearch, MariaDB, and ActiveMQ.

Responsibilities:

• Contributed towards building micro-services architecture-based applications that resulted in improved scalability, maintainability, and fault tolerance.
• Optimized database queries for faster response times, significantly improving end-user satisfaction rates.
• Spearheaded migration from legacy systems to modern architectures, reducing maintenance costs and improving overall efficiency.
• Reviewed code and debugged errors to improve performance.

Key achievements:

• Resolved critical ActiveMQ queue bottleneck, enhancing application efficiency by implementing code and configuration optimizations. Achieved 70% reduction in message consumption time, significantly boosting operational efficiency, lowering infrastructure costs, and improving end-user experience.

Projects targeted at the tourism sector, specifically, developed solutions for the air ticket sales industry. The solutions included the use of Java, Groovy, and Golang languages, along with the Spring Boot and Quarkus frameworks.

Responsibilities:

• Investigated issues and defects to determine problem root cause and formulate corrective action recommendations.
• Integrated third-party APIs into existing applications, enhancing functionality and creating seamless user experiences.
• Mentored junior developers, fostering culture of continuous learning and professional growth.
• Utilized containerization technologies like Docker for easier deployment management, leading to reduced downtime during updates.
• Applied agile methodologies to streamline development processes, resulting in faster product releases.
• Contributed towards building microservices architecture-based applications that resulted in improved scalability, maintainability, and fault tolerance.

Key achievements:

• Developed innovative products and integrations that resulted in 30% increase in air bookings in 2021, expanding revenue and market competitiveness. This success not only drove company's growth but also significantly improved customer satisfaction and loyalty.
• Led migration of RESTful APIs to the gRPC protocol, achieving 3x performance improvement. This strategic shift significantly enhanced communication speed and service efficiency, bolstering IT infrastructure scalability and performance.

Engaged in projects within the private pension sector, I played a key role in developing several products and transitioning from monolithic architecture to microservices. The solutions utilized Java language and the Spring Boot framework, along with Docker and Kubernetes for containerization and orchestration.

Responsibilities:

• Established effective communication channels with stakeholders to gather requirements, provide updates, and address concerns promptly.
• Enhanced application performance by optimizing Java code and implementing efficient algorithms.
• Participated in requirements gathering and design development meetings.
• Lead code reviews and estimated required changes.
• Wrote, modified, and maintained software documentation and specifications.
• Corrected, modified and upgraded software to improve performance.
• Reduced software bugs by conducting thorough unit testing and collaborating with QA teams.
• Participated in regular sprint planning meetings to align project priorities with business objectives.

Key achievements:

• Successfully deployed CI/CD process using Azure platform, streamlining development workflows and enhancing deployment 100% efficiency.

The focus was on creating solutions for the local government's public security intelligence service. I was responsible for designing and developing solutions that facilitated the organization's internal and external processes. Java, JBoss, and Spring constituted the main technology stack.

Responsibilities:

• Collaborated with cross-functional teams to ensure seamless integration of back-end systems with front-end interfaces.
• Developed scalable web applications for improved functionality and user satisfaction.
• Contributed to architectural decisions, shaping direction of multiple projects from inception to deployment.
• Used NodeJS, ORM and SQL/No-SQL to develop and manage databases.
• Participated in requirements gathering to solidify prerequisites and determine best technical solution to meet business needs.
• Conducted data modeling, performance and integration testing.
• Created proofs of concept for innovative new solutions.

Key achievements:

• Developed software system supporting local public security efforts, aiding in identification 85% of stolen vehicles and wanted individuals, significantly enhancing law enforcement capabilities.