Architect advice for desing of concurrence in Kotlin Spring

I have professional experience to work with Web Applications, Mobile Apps and Desktop Software development. My professional skillfulness: • Spring Boot: I have been working Backend and Frontend with single or Multiple Modules, and with user Authentications and Authorization with roles based access. Java persistence API(JPA), Hibernate, H2 Database, MySql or Oracle 19c Database, Bootstrap5, JQuery, JavaScript. • Mobile Apps: Android and iOS have been working with Web and native apps using Java/Kotlin or Flutter framework, Dart, and also swift programming languages, with Supported Android Studio and xcode development environment. • Desktop Software: I am working Desktop Software using java and C++ Programming and also spring boot some clients choose with browser. • WordPress: I have been working Wordpress theme and plugins according to client’s instructions. I have ready layout theme and plugins, I’ll just design and add codes according to requirements. • Magento and Magento2 platforms: I have experience to work with Magento and Magento2 platforms. I have ready layout theme and plugins. • Shopify: I have experience to work with Shopify theme and plugins, I’ll complete requirements according to requirements. • Oracle Apex: I have ready projects using Oracle Apex, Oracle Database, Bootstrap, Javascript, PL/SQL. ***Some words about my reviews: I had covid-19. I requested then to wait or mentioned to hire others but he didn't heard me and gave me bad reviews.

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