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Alexey – React, Node.js, Typescript, experts in Lemon.io

Alexey

From Ukraine (GMT+3)

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LeadSenior
Full-stack Web DeveloperStrong senior
Hire developer
11 years of commercial experience
E-commerce
Healthcare
Marketing
Smart home
Marketplace
Mobile apps
Platforms
Lemon.io stats
1
projects done
348
hours worked
Open
to new offers

Alexey – React, Node.js, Typescript

Strong senior Full-stack Web Developer with a very decent understanding of JS fundamentals. He has both - impressive theoretical knowledge and serious practical experience in the software products development area. React is his primary technology for FE development, and he has experience with all the essential approaches/libraries from its ecosystem. As for BE development - Alexey also has pretty extensive experience in this area as well, his skill set spans SQL and nonSQL DBs, Nest.js, GraphQL, REST API development, testing, patterns, etc. With team-leading experience and great soft skills, he will be a valuable addition to any project he joins.

Main technologies
React
8 years
Node.js
5 years
Typescript
2 years
Additional skills
React Native
Nest.js
Docker
RaspberryPi
Redux
React Hooks
MobX
GraphQL
CSS
Styled-components
SQL
Express.js
REST API
Apollo Server
Sequelize ORM
PostgreSQL
PostGIS
RabbitMQ
PhoneGap
AWS
Kubernetes
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Tech Lead
Dec 2017 - Mar 20202 years 2 months
Project Overview

The goal of the project was to combine Smart home ecosystems into a single platform.

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Responsibilities:
  • Created architecture and implementation of a mobile framework for 3rd-party UI developers
  • Implemented a lightweight orchestrator for Docker containers that integrates with the system core and runs on the Raspberry Pi
  • Implemented a service for running JavaScript scripts in a sandboxed environment
  • Implemented a mechanism for routing data updates via WebSocket from the System Core on the Raspberries to the connected Cloud services and UIs
  • Reviewed code and mentorship of 2 junior developers
  • Implemented unit tests for different parts of the ecosystem
Project Tech stack:
React
React Native
Node.js
Docker
RaspberryPi
Senior JavaScript Developer
Mar 2016 - Apr 20182 years 1 month
Project Overview

The project's goal was to allow health care professionals to view diagnostics results and write clinical reports based on the video stream provided by the hardware produced by a leading American medical device company.

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Responsibilities:
  • Developed front-end applications for Health Care Providers in the United States and Europe and successfully launched a new product
  • Designed Front-end architecture
  • Led a team of 3 front-end developers
  • Performed code review
  • Performed technical interviews
  • Performed refactoring and code optimization
  • Covered the most critical part of the existing project with end-to-end tests
  • Implemented project-specific end-to-end testing system based on Nightwatch.js and integrated with TeamCity CI
  • Migrated the large (100k SLOC) front-end project from a legacy framework (Dojo) to React.js
  • Implemented the patient-oriented mobile application using React Native
  • Designed communication protocol for IoT devices communication based on MQTT protocol
  • Performed migration of the old huge 15-year repository from SVN to Git
Project Tech stack:
React
React Native
JavaScript
Front-end developer
Jan 2015 - Apr 20161 year 3 months
Project Overview

Complex Web application for Matlab and Excel models management and Cost-Effectiveness marketing application that allowed the company to customize its marketing campaigns.

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Responsibilities:
  • Developed mobile front-end application using React.js and PhoneGap
  • Developed backend services (user management, scenarios and model execution service) using Node.js and Express.js
  • Deployed the back-end project to Linux servers using Ansible
  • Expanded projects functionality
Project Tech stack:
React
Node.js
Front-end developer
Feb 2014 - Dec 201410 months
Project Overview

Groupon-like mobile application for the Israeli market.

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Responsibilities:
  • Developed mobile PhoneGap-based application
  • Migrated project from jQuery to React.js
  • Performed refactoring and optimizations
Project Tech stack:
PhoneGap
React
Tech Lead, React/Node.js
Apr 2020 - Unfinished4 years 2 months
Project Overview

The company's goal is to provide software for its own healthcare network to improve the speed and quality of physicians' work in the US.

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Responsibilities:
  • Led a team of 3 engineers
  • Created front-end and back-end architecture
  • Implemented advanced search and aggregation of data based on geo data from different locations
  • Implemented unit, integration, and e2e tests
  • Integrated with 3rd-party EHR to consume data from their backend
Project Tech stack:
React
Nest.js
Typescript
Apollo Server
Sequelize ORM
PostgreSQL
PostGIS
RabbitMQ
React Native

Education

2014
Automatics and Software Engineering
Master's Degree

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