I learned the car rental basics, improved my skills at AWS services such as: AWS Fargate, AWS Rds and much more. I added integration of the TypeScript in some of existing micro services which were written on pure js which makes them more stable and readable. I worked using the OpenAPI specification which also brings much helpful things in NodeJs based projects like auto documenting and validating of API requests. Another great achievement was an integration of the LiberKey (keyless access) flow into our vehicles which allows our customers to easily book vehicles using their phones and nothing else is needed. Using our microservice architecture we deliver a special digital key to their smartphones which is used for locking/unlocking doors so no physical presence is needed. We could even remotely stop or start the vehicle’s engine. I personally implemented about ~80% of the code base.

It was decided to completely rewrite the company’s old dating application written on Ionic 2 in favor of Flutter. I did a great research comparing the most popular mobile frameworks like React native, Flutter, Ionic and Native Script. And the flutter was chosen as a preferred because of some important things like: easy development, the count of custom modules, a good support of at least 3 platforms: Ios, Android, Web (as a PWA). I personally added the basic functionality as: firebase auth, user search, messaging, tinder cards, i18n, permissions, forms, error handling, server updates (aka sockets), unit testing, etc. I learned the Dart language which is used in flutter in a very short time period, and that allowed us to fully rewrite a really big application in only 6 months!

While working at CrediWire I learned the accountant basics, now I'm familiar with such terms as: debit, credit, t-accounts, cashflow, etc. I added a few great abstraction layers for working with the AWS's lambda and caching. Made an integration of reports generation in Excel format using a micro service architecture based on rabbitMQ. Added a few payment integrations like "Xena", helped the project's lead make a deep code refactoring.

While working at MEDvision360 I improved my skills at Angular 7 and also figured out with a quite difficult protocol "FHir" (a protocol for medicine data exchanging). The next great addon which was introduced be me it's a tool called "Story Book" which allows to create and edit components in isolation level (it means components can be displayed without a real data source, http and so on). Also I covered about 80% of the code base by unit tests which of course lead to more stable and predictable behavior. The last great achievement was an introduction of dynamics measurements like: blood pressure, glucose, weight, height, etc. All those measurements are built by a special scheme based on the JSON format which includes every aspect like form elements and validators, a presentation layer, etc. The format allows developers to add any other type of measurements in a very quick time.

While working at Skalfa (a free and open source social network and dating script) - I have gotten a lot of experience in such technologies and languages as: Java Script (ES2016-18, Typescript), Ionic / Angular / Cordova Js, meteorJs, IOS / ObjectiveC, REST API, Web Sockets. Using the Ionic and Angular 2 we realized a mobile app for the dating business model. Personally I have realized more than 60% of functionalities, some of them were: a web chat (using the web sockets technology for data exchanging with a server), tinder cards (swipeable users card), push notices for IOS, Android and web, a REST API based on the Silex framework, etc. Also I introduced a continuous integration based on: TravisCI, Behat, Karma, Amazon services (S3)

I participated in many kinds of projects like e-commerce, blogs, business card sites, etc based on the YII framework which I Had successfully learned working with. Also I have gotten a big experience working with different kinds of Russian’s CRM systems like Bitrix, Megaplan, etc.