Ariel Weinberger

I've been working with JavaScript for years. I can help you get a better understanding of vanilla JavaScript - both ES5 and ES6. JavaScript basics such as variables, declarations, expressions, statements, loops. Concepts such as Object Oriented Programming (OOP) and Functional Programming. I will teach you ways to handle the asynchronous nature in JavaScript - callbacks, promises, async-await and RxJS. I can help you learn how to write tests for your JavaScript code using common technologies, as well as spice up your plain HTML website with some JavaScript magic.

I have been working with React extensively for the past years, developing Single Page Applications and mobile apps with React and React Native (as well as Expo). I am aware of common standards of developing Recat applications and can teach you core concepts such as hooks, high order components, modular components, presentational and container components and more. Let's make your React application use common stage management solutions such as Redux and MobX. Your app can consume a REST API with the right architecture or perhaps be real-time using web sockets. I can help you learn how to test your React applications (unit tests and UI tests) using Jest and Enzyme.

I've been working with Angular since its version 1 release - Angular JS. Over the years I have used it from version 2 until now - Angular 7. I've applied it in various Single Page Applications as well as a hackathon-winning Ionic application. I can help you write unit tests for your Angular applications using Karma and Jasmine, as well as E2E tests using Protractor. I can help you manage your application's state by properly using services and RxJS observables. Consuming APIs and having a predictable application flow where you have full control of what happens and when it happens.

I have very rich experience within Node.js. I can help you learn industry-wide accepted design patterns, architecture principals and good practices of writing modular, scalable and testable large-scale and small-scale Node.js applications. Experience with Express.js or NestJS, I will teach you how to properly create a RESTful API, that communicates with your single page front-end application (React, Angular, Vue). I will also teach you how to work with databases, namely MySQL, MongoDB or DynamoDB. How to properly set up a database, indexing, querying and using an ODM (object document mapper) or ORM (object relational mapping) such as Mongoose/TypeORM. We will go over security - authentication, authorization, securing resources in a REST API by roles and permissions and more. I will teach you how to create a real-time application with web sockets. That can be used for any purpose such as live notifications on your website/app, a chat application or anything that requires real-time data transfer with the cutting-edge technology of web sockets.

No more Monoliths. The world needs more single-purpose services that are resilient, secure, performant and scalable. Let's develop, test and deploy micro-services together - using your favourite technology (Node.js based).

I have been working with web technologies for over 7 years now, and coding in HTML and CSS as a part of my daily job as a Software Engineer for 8 to 10 hours every day. I am aware of the W3C standards, the newest version of HTML - that is HTML5, elements and the semantics of HTML code. Well-aware and experienced with CSS, the new CSS3 with its new properties and transitions/keyframes, selectors, pseudo-classes, :after, :before, the box model, blocks and responsive web design. I can help you enhance your CSS skills using a pre-processor such as Sass, Less or PostCSS - this will make your themes a lot more maintainable and fun to write.

Ramp up your application by adding tests to it. Make sure existing code never fails your users again. I can help you write unit tests, UI (black box) tests and E2E tests. Jasmine, Karma, Jest, Enzyme, Protractor - you name it. They are all quite simple. We will choose the right technology based on your application and your needs.