Journey - Career Growth & Learning Timeline

July 2022 Transition

Joined Mercado Libre Fraud Prevention Platform

Started working on distributed fraud prevention systems for marketplace, payments, and shipping flows at massive scale across Latin America.

Skills:

Java
Go
Distributed Systems
Fraud Prevention
React

Scope

I joined Mercado Libre to work on high-throughput, low-latency fraud prevention systems connected to marketplace, Mercado Pago, and logistics operations.

My day-to-day work combined backend-heavy development with cross-functional collaboration:

Designing and implementing distributed services in Java and Go
Supporting internal fraud operations with React components
Improving architecture and reliability in critical payment and risk flows
Operating and monitoring production workloads with platform and observability tooling

What This Transition Reinforced

This role reinforced my focus on engineering for real production scale, where reliability, observability, and performance are first-class requirements.

March 2022 Transition

Joined Amaris Consulting for Leroy Merlin Project

Moved into a full stack role delivering retail APIs and React experiences, with strong focus on observability, documentation, and cloud delivery.

Skills:

Java
Spring Boot
React
GCP
OpenAPI

Scope

At Amaris Consulting, I worked on client-facing retail initiatives for Leroy Merlin Brazil, covering both backend APIs and frontend delivery.

The role required balancing product delivery speed with technical quality:

Building REST APIs with Java and Spring Boot
Developing SPA features with React
Creating and maintaining API documentation with OpenAPI/Swagger
Deploying through CI/CD pipelines on GCP
Tracking application behavior with Datadog and Kibana

What This Transition Added

This experience strengthened my ability to deliver full stack solutions while keeping operational visibility and integration quality as part of the development workflow.

February 2021 Transition

Joined Fulcrum Digital on Mastercard Engagement

Took ownership of batch and transaction processing initiatives, driving architecture choices and quality practices for financial workloads.

Skills:

Java
Spring Batch
Spring Cloud Data Flow
Oracle DB
SonarQube

Scope

At Fulcrum Digital, I worked on Mastercard-focused initiatives related to high-volume financial transaction and batch processing.

My responsibilities included both implementation and technical leadership:

Running tool evaluations and proof-of-concepts to guide technology adoption
Implementing batch processing pipelines with Java 11, Spring Batch, and Spring Cloud Data Flow
Expanding test coverage to improve confidence in production behavior
Reviewing code and introducing quality controls with SonarQube

What This Transition Developed

This period sharpened my experience with financial-domain reliability requirements and engineering quality gates for systems where correctness and scale are non-negotiable.

May 2020 Transition

Joined PowerTiss Healthcare Billing Platform

Contributed to healthcare billing software by improving distributed services, async integrations, and automated test coverage.

Skills:

Java
Spring Boot
Spring Cloud
RabbitMQ
AWS

Scope

At PowerTiss, I worked on healthcare billing management software with focus on backend feature delivery and platform stability.

Key contributions in this role:

Building and evolving Java 11 and Spring Boot features
Implementing distributed components with Spring Cloud
Integrating asynchronous processing with RabbitMQ
Writing unit and integration tests with JUnit and Mockito

What This Transition Strengthened

This role deepened my practical experience in service reliability, asynchronous workflows, and test-driven improvements for a domain with strict operational requirements.

January 2014 Transition

Joined University of Pernambuco as Full Stack Engineer

Led development of admission-related systems, automating institutional processes and improving reliability for high-impact academic operations.

Skills:

Java
Spring Security
Hibernate
JSF
PostgreSQL

Scope

At the University of Pernambuco, I supported and evolved web systems connected to the admission process and internal academic operations.

The work required a balance between delivery speed and institutional reliability:

Developing and maintaining core admission applications
Automating result processing and report generation
Designing and evolving relational data models in PostgreSQL
Implementing access control and data protection with Spring Security
Building user interfaces with JSF and PrimeFaces

What This Transition Built

This stage established my engineering foundation in end-to-end delivery, from data modeling and backend logic to user-facing interfaces and production support.