Hello.
It's glad to make a proposal for your project. I have checked this project description and know that you are looking for a senior developer who has mastered Javascript.
I am the just one you are looking for, who has 12 years of exp. and mastered all the features of java, spring boot,gitlab. pcf. Jenkins, Splunk, Shell Scripting, Linux, etc.
I also have rich experience in frontend and Firm grasp of the JavaScript {{and TypeScript or ClojureScript}} language and its nuances, including ES6+ syntax, Knowledge of {{functional or object-oriented}} programming, Ability to write well-documented, clean Javascript code, Rock solid at working with third-party dependencies and debugging dependency conflicts, Familiarity with native build tools, like XCode, Gradle {{Android Studio, IntelliJ}}, Understanding of REST APIs, the document request model, and offline storage, Experience with automated testing suites, like {{Jest or Mocha}}
And so far, I developed with ReactJS/NodeJS/VueJS for European countries.
I hope to hear from you soon.