• Experience using Java 8 JSF and Primefaces for integrated web application development;

• Worked with Java Spring Boot to create Rest API;

• Worked with Angular to create frontend applications and Rest API communication;

• Gitlab-ci for test automation and deployments;

• Implemented the use of Cucumber for test planning.

• Kept working with AWS CDK for deploy serverless applications;

• Responsible to create pipelines to CI/CD, using GitHub actions and AWS Code Build;

• Worked with React Native to develop mobile applications;

• Worked with embedded C for native mobile code with Android JNI and Objective C for iOS.

• Worked with React.JS to develop web application, using Next.JS together for server-side rendering;

• Used Nest.JS (express core) for reliable real-time backend application web socket, using Bull Queue System with Cron Jobs;

• For API handler also used AWS Lambdas with OAuth2 for authentication system;

• Worked with AWS CDK for deploy serverless applications;

• Experience working with AWS Lambda, Gateway API, DynamoDB, Elastic Beanstalk and other services;

• Responsible to create pipelines to CI/CD, using GitHub actions and AWS Code Build;

• Used Nest.JS (express core) for create API handler, using OAuth2 for authentication system, class validator for DTO checks and cron jobs;

• Worked with Firebase for authentication system and database;

• Experience using React for web development with class components and HOCs;

• Responsible to write GitLab CI files for continuous integration;

• Worked with Flutter to develop apps for Android and IOS, using Material Design;

• Android Studio was used when the project was Android only and needed performance. Also, we worked with RxJava to create reactive components in Android.