Carlos Miguel Miranda Obando

Software arquitect of microservices for e-commerce and creating strategies to migrate from legacy systems

Situation: The legal department of Spain's Social Security system was operating with a legacy system that faced numerous slow and difficulty complying A complete was required to improve reduce and ensure Task: As an Application Architect, my main responsability was to lead the design and implementation of a modern microservices-based solution capable of integrating with both existing and future systems. Additionally, I had to coordinate multidisciplinary teams, ensure the scalability of the solution, and minimize risks associated with transitioning from legacy system. Action:

• Initial Analysis: Conducted a thorough technical audit of the legacy system, identifying key weaknesses and areas for improvement.

• Architectural Design: Designed a modern architecture based on hexagonal principles, leveraging microservices deployed in OpenShift and asynchronous communication patterns like Kafka.

• Integration Strategy: Developed a co-existence strategy between the legacy system and the new services using patterns like strangler fig and change data capture to ensure a gradual migration.

• Team Management: Directed a team of backend and frontend developers and QA specialists, organizing worl through agile methodologies (Scrum) to deliver functional iterative increments.

• Automation: Implemented CI/CD pipelines in Jenkins to enable controlled deployments and automated testing.

• Trainning and Adoption: Organized trainning sessions to upskill the team in technologies such as Spring Boot, Docker, OpenShift, and Snowflake, ensuring they were equipped to operate and maintain the solution Result: 1 . Reduced the average time requiered to resolved legal cases by 40%, signicantly improving citizen services. 2. Delivered a solution capable of handling increased workloads withput performance degradation

Technology Stack: Spring Boot 3.x, Docker and Docker Compose, C4 Model, Confluence, Jira, IntelliJ, Gitlab, Jenkins, OpenShift, Helm, Jenkins

Situation: Adidas aimed to consolidate its separate systems for budget management of footwear and clothing production into a single application Task: As a part of the project team, my role involved participating in the 'discovery phase' of the project, which was crucial for planning and task assessment. Action:

• Engaged in the initial 'discovery phase' to understand the requirements and challenges of merging the two systems.

• Collaborated in creating the project plan, weighing tasks, and formulating a technology plan with experts and tech leads.

• Contributed to discussions and decisions regarding tools, infrastructure, and other technical aspects to ensure these were incorporated into the planning and the initial spring (Spring 0) Result: Successfully laid the groundwork for the development of a unified application for Adidas's budget management, ensuring that all technical considerations were aligned and integrated into the project planning process.

Technology Stack: Confluence, Jira, IntelliJ, Gitlab.