Blockchain, Ethereum, R3 Corda, Hyperledger Fabric, Quorum
,JavaScript ,JSON, Angular, React,
Ionic Cordova, Jasmine ,Mocha
Firebase, Secure Rest Apis ,NodeJs
,ExpressJs ,MongoDB ,
Swagger ,OAuth Microservices,
Dockers System Inetgrations,
Application design Alexa Skill
NodeRed, ES6 ,Rasberry PI