DevTeam.Space Developer Profile, Konstantin 

Konstantin 

DevTeam.Space Developer Profile, Konstantin  Java and Node.js Developer

Europe
Availability: Full-time
Hire Konstantin 
Europe
Availability: Full-time
Java and Node.js Developer at DevTeam.Space since January 1, 2016

Konstantin is a senior full-stack developer​​ with​ 6 years of experience​​ in​​ backend​​ and frontend development.

Expert In
Java Node.js React
Location:
Europe
Availability: Full-time
Skills and Qualifications

Languages

  • Java
  • JavaScript
  • HTML
  • CSS

Frameworks

  • Spring Core
  • Spring Data JPA
  • Spring Security
  • Spring Boot
  • Spring MVC
  • Hibernate
  • ReactJS
  • Express.js

Libraries/APIs

  • jQuery
  • Redux
  • REST API

Tools

  • JUnit
  • Maven
  • Jenkins
  • Jira
  • GIT
  • Gerrit
  • SVN
  • npm
  • IntelliJ Idea

Platforms

  • Node.js
  • Ethereum

Other

  • Drools
  • RabbitMQ
  • WebSocket
  • Android SDK
  • Solidity
  • Smart Contracts

Data bases

  • MySQL
  • MySQL Workbench

Featured DevTeam.Space Projects

Think Empire

AWS, Backend, Blockchain, CRM, Database Optimization, Fintech, Frontend, Geolocation, Javascript, Next.js, Node.js, React, Real Estate, Search, SQL, Twilio, Web

This platform for real estate businesses has several parts: it collects data from dozens of sites with scrapers, has a built-in messenger, and offers adjustable search options for real estate, people, and deals.

Details
Decenture

Backend, Blockchain, Education, Fintech, Javascript, Mobile, Node.js, React, React Native, Smart Contracts, WordPress

Decenture

Details

Some of Konstantin ’s Projects

CRM Integrations

Full-stack Developer

Konstantin successfully linked Kazoo IP telephony with platforms such as Zoho Products, Salesforce CRM, Hubspot CRM, Zendesk, Slack, and Zapier. He was responsible for creating systems for balancing, logging, retrieving call records, and guaranteeing data security. He also designed the user interface, controlled CRM integration settings, and contributed to the CI/CD processes using Jenkins and SaltStack. Test and production server was implemented via Prometheus and Grafana.

Konstantin successfully linked Kazoo IP telephony with platforms such as Zoho Products, Salesforce CRM, Hubspot CRM, Zendesk, Slack, and Zapier. He was responsible for creating systems for balancing, logging, retrieving call records, and guaranteeing data security. He also designed the user...

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  • Node.JS
  • JavaScript
  • Websocket
  • AES
  • Express.js
  • Monster UI

Frontend Development of Online Translation Management System

JavaScript Developer

Konstantin used React and Redux to create a dynamic and responsive online application for translation agencies. He created an administrator account and custom wrappers to streamline Redux code and contributed to the app's modular component architecture.

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  • JavaScript ES6
  • React
  • Redux
  • HTML
  • CSS3
  • WebSocket
  • gRPC
  • npm
  • WebPack
  • Slack
  • Trello
  • Drone.io
  • GitHub
  • Sentry

Management System for Localization Projects

JavaScript Developer

This project involved a corporate web application for managing localization projects. Konstantin took part in developing the interface based on a spreadsheet, which included powerful user interaction capabilities. He implemented several new functions and improved and refactored the existing code.

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  • HTML
  • CSS3
  • SASS
  • ReactJS
  • Redux
  • JS ES6

IoT Platform

Java Developer

Konstantin was involved in developing and testing an IoT system that facilitates the exchange of data between the system and external applications. He took part in developing and testing message protocol converters between server-side and target devices.

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  • Java8
  • Maven
  • JUnit
  • Git
  • Kaitai
  • Lombok

Creating the Extended Game Mechanics for the Client Role-playing Game

Java Developer

This application is a game based on the rules of the well-known game Dungeons and Dragons. Konstantin performed the following work on the game engine: Development of the new functionality; Expansion of the model; Bug fixing. The UI was developed with Swing and JavaFX technologies since players need a user-friendly and easy-to-use interface for interacting with the game.

This application is a game based on the rules of the well-known game Dungeons and Dragons. Konstantin performed the following work on the game engine: Development of the new functionality; Expansion of the model; Bug fixing. The UI was developed with Swing and JavaFX technologies since players need...

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  • Java 8
  • Swing
  • JavaFX
  • GIT
  • Jira
  • JUnit
  • Maven
  • Intellij Idea.

Blockchain Research and Development Web Application Using Smart Contracts

Full Stack Developer

Konstantin developed this automated system for decentralized data storage and smart contract execution. He researched and considered different methods of smart contract implementation before implementing the most suitable one for the resources available.

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  • Ethereum
  • Smart Contract
  • Truffle
  • Solidity
  • Metamask
  • Solidity
  • Web3.js
  • Angular

A Platform for Attracting Users to Events

Java Developer

The platform he was asked to work on collects statistics of visits to various kinds of events and their responsiveness to various methods of notification (SMS, phone, VK) before ranking users by interests. During the project, Konstantin took part in designing the architecture, the backend development, the creation and implementation of layers, and writing the Unit tests.

The platform he was asked to work on collects statistics of visits to various kinds of events and their responsiveness to various methods of notification (SMS, phone, VK) before ranking users by interests. During the project, Konstantin took part in designing the architecture, the backend...

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  • Java 8
  • RabbitMQ
  • MySQL
  • Spring Core
  • Spring Data JPA
  • Spring Security
  • Spring Boot
  • Spring MVC
  • REST API
  • JUnit
  • Mockito
  • IntelliJ IDEA
  • Maven
  • Jenkins
  • JavaMail API

Learning Platform

Java Developer

A web app for a learning platform. For this project, Konstantin implemented the following features: Course designer (e.g. an opportunity to create a course) Choosing and passing the courses Module for convenient planning of studying. He used Angular for the frontend side and Spring for backend. The connection was implemented using Rest API.

A web app for a learning platform. For this project, Konstantin implemented the following features: Course designer (e.g. an opportunity to create a course) Choosing and passing the courses Module for convenient planning of studying. He used Angular for the frontend side and Spring for backend....

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  • Java 7
  • Spring Core
  • Spring Data JPA
  • Spring Security
  • Spring Boot
  • Spring MVC
  • JWT
  • REST API
  • JUnit; TypeScript
  • Angular
  • Angular Material
  • Materialize
  • Angular CLI.

Mail-client for Android

Java Developer

This was an Android mail client mobile application. Konstantin solved the existing problems relating to users working with emails. He also designed interfaces that adhered precisely to the material design.

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  • Java 7
  • Android SDK
  • JavaMail
  • Android Studio