Javascript/Web
Node.js, Express, Angular.js, React, Jquery, CSS3, Bootstrap, D3
Android
Android SDK / Jetpack, Kotlin, Flutter, Java, NDK, Cordova/Hybrid, Xamarin
Database
NOSQL: MongoDb & Mongoose, Firebase, ArrangoDb, Redis, Couchbase,
Hadoop (HBase, xHive), Apache Cassandra, ArangoDB, Google
BigTable
SQL: MySql, SQL Server (Entities, LINQ, SSIS), Sequelize, Oracle, Google
BigQuery
Analytics & MultiDim: MS SSAS, Qlik Sense, Power BI, Apache Kylin,
Salesforce, Trifacta
Microsoft
C#, .Net, XAML, WPF, Azure, Asp.Net MVC, WCF