JavaScript development portfolio

The challenge was to develop a widget for displaying cryptocurrency market dynamics. The widget was created using the ReactJS framework as a Single page application. Redux was used to store the state of the widget and market data. The visual part is implemented using the Highchart library. Data collection from third-party sources is organized through the REST API. Users of the application can be identified...

The challenge was to develop an application to track market changes based on data from various exchanges and form customized investment portfolios. Throughout the process of database structure development, we have taken into account various market entities such as Coins, Exchanges, Tokens, ICOs, Funds, Crypto Funds, etc. These entities may have child entities. To store all types of entities, we have implemented a universal table...

Sinaps is a system that allows you to determine the location of an object in real time. The system has become an integral part of healthcare. It is used in nursing homes and hospitals and based on RFID technology and a cloud-based security management system. RFID (radio-frequency identification) is a technology whereby a reader captures digital data via radio waves. RFID technology in the healthcare...

Service for planning and organizing events with several available dates to choose. Participants can vote for the date more convenient for them. There are 3 types of votes — “can attend”, “maybe” and “can’t attend”. Event creator specifies participants, location, date and time, organizers of the event. There are also additional options available, which allows limiting user’s vote options to “yes” and “no” only, to...

Fasivery is a service which combines restaurants and food delivery services into a single order system. It includes two clients and a server part. Users can place an order from the offered restaurants using a single personal cabinet. They can view past orders and don't have to re-enter contact information. The application is available in English and Italian. The service consists of three components: A...

This mobile application is a social network created to help students get into top colleges and to study for tough courses. You have to register and verifies email. Then you get access to the user page with information about the posts, subscriptions, subscribers, groups, etc. You can create lessons with video and photo attachments. Other users can view, comment and subscribe to news. The number...

Crypto Bank is the first licensed Bank providing services both in Crypto and Fiat currencies. This financial ecosystem is created to make cryptocurrencies simple and habitual for everyone. It provides the following services: Bank accounts both in fiat and cryptocurrencies. Deposits in fiat and cryptocurrencies. Instant money transfers. All the other traditional banking services. Visa/Master Card with BTC and other major cryptocurrencies as the hard...

GAB SMART BUILDING PROJECT is a platform which allows you to easily manage your smart building devices from anywhere in the world. Devices involve IP telephony, smart and IP TVs, digital signage, gate barriers, fire alarms, etc. This system is capable of importing and manipulating objects in the DWG maps of floors and rooms. DWG is a proprietary binary file format used for storing two-...

This is a platform designed to pass tests. The app consists of the following features: List of available tests Tests designated by administrator 6 types of questions: exact match, free presentation, comparison, addition, alternative and multiple choices Addition of new tests All kinds of questions with different-weighted answers, single correct answer, finite duration, customizable order, etc. Tests can be taken a limited and an unlimited...

Lifebox is a cloud storage service that allows you to save your pictures, videos, music and files. To access these files on phone, tablet or PC and share it you need to have internet access. On first login you will receive 5 Gb of storage space as a gift. To get additional space, you will need to purchase a storage subscription. Subscription fees are automatically...

Microservice architecture is a distinctive method of developing software systems that has grown in popularity in recent years. In short, a microservice architectural style is an approach to developing a single application as a suite of small services, each running in its own process and communicating with lightweight mechanisms, such as HTTP API. These services are built around business capabilities and independently deployable by fully...

WaveOrtho is an application gracefully combining appointment schedule and medical records for dental clinics. It was designed, developed and tested in collaboration with world’s best orthodontics practices.This application stores medical records on the patient, including photos and dental X-rays. WaveOrtho features a game-changing appointment book with a modern usable Retina-ready interface. Daily schedules can be neatly organized with color-coded procedure templates. Appointments can easily be...