Context
At Infosistemas, I worked on platforms for rental companies, fleets, automakers, and mobility operations. It was an enterprise environment of integrations, fiscal flows, and high-volume services, where I worked closely with DevOps, SREs, and DBAs.
How I worked
My work combined architecture with hands-on delivery. I redesigned flows between microservices, led NestJS and Go integrations, and implemented critical-event traceability with NestJS and MongoDB. I also evolved APIs, investigated security issues, and contributed to digital journeys and webapp components when backend and interface continuity was needed.
The principle that guided my work was making failures observable and manageable from the design stage. In messaging, I treated durability, retry, idempotency, and consumer control as part of the flow rather than later fixes.
What I took from it
This experience expanded my work in systems with many dependencies and specialists. I learned to turn requirements, risks, and operational constraints into decisions that stayed clear through client validation.