Designing and developing a serverless service that, for each new purchase made using a credit card, receives data via webhook triggers from another application and communicates with a credit card API to generate the purchase. (Lambda AWS - NodeJs).Developed an interface and backend of a loan simulator that calculates and shows the amount of interest generated, the monthly payment, and the taxes.Typescript, ReactJs, NestJs, Prisma, Postgres.Developed an API Gateway to centralize all incoming company requests, increasing efficiency with multiple Pods, increasing security with Authentication and Rate Limit that operators can see on interface. Typescript, NodeJs.Developed a CI/CD system that is used to overseeing pull requests, updating container images, manage running applications, monitor deployments, and visualize the states of applications running in containers. Typescript, ReactJs, NestJs, Shell Script, Docker API, Docker Hub and Github Actions.Developed a customer control system, where operators can deactivate a customer and view all inactive customers along with their respective reasons for deactivation. Typescript, ReactJs and NodeJsDeveloped a microservice validator of requests from RabbitMq, ensuring data integrity and security in backend operations.Typescript and NodeJsDeveloped and maintained reader system for processing bank debit submissions and returns, optimizing backend operations. Typescript and NodeJs.