I'm a software engineer for 6 years at Adlink France and CGI.
I worked on middleware for IIoT (Industrial Internet of Things) clients. In Adlink I was involved in many projects such as authentication, access control, cryptography, load balancing, android apps etc ...
My second mission was at SNCF (CGI consultant), where I developed a mobile app (for ios and android), using React Native framework, for SNCF trains drivers which manages their work plannings, days of services, driving mode which contains a timeline that moves automatically using GPS location (and system time in the offline mode) and many other utilities. The app communicates with many other services using REST, SOAP, SFTP and XML.
I managed the back end using Java, Spring Boot and PostgreSQL.