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Yaroslav – JavaScript, React, Next.js, experts in Lemon.io

Yaroslav

From Ukraine (GMT+3)

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Front-end Web DeveloperMiddle-to-senior
Hire developer
7 years of commercial experience
Asset management
Marketing
Social media
Transportation
CMS
Dev tools
Mobile apps
Lemon.io stats
4
projects done
927
hours worked
Open
to new offers

Yaroslav – JavaScript, React, Next.js

Yaroslav is a skilled front-end developer with a keen eye for visual aesthetics. He began his career working with pure JavaScript and later specialized in React development. Yaroslav's natural curiosity drives him to explore new technologies, making him a valuable asset for any project.

Main technologies
JavaScript
7 years
React
5 years
Next.js
1 year
Additional skills
Node.js
MongoDB
React Native
Express.js
Typescript
GraphQL
Chart.js
Material UI
Redux
CSS
Socket.io
Bootstrap
Nest.js
React Flow
Three.js
Highcharts
Rewards and achievements
Client's favourite
Swift communicator
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior front-end developer
Jun 2022 - Jan 20237 months
Project Overview

A product that can help clients analyze their assets and their maintenance history to help optimize maintenance efforts. The company also offers advanced analytics services. It can help customers predict when their machine will fail so that they can be proactive in managing their assets while also minimizing costs.

Skeleton
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Skeleton
Responsibilities:
  • created front-end architecture;
  • implemented advanced custom charts and flow diagrams with React Flow;
  • redesigned the existing front-end;
  • built front-end components library;
Project Tech stack:
React
Next.js
Chart.js
React Flow
Senior front-end developer
May 2022 - Aug 20223 months
Project Overview

Project for creating shipments and trips to deliver goods from one point to another.

Skeleton
Skeleton
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Responsibilities:
  • created client-side architecture
  • designed REST API
  • implemented components library
  • optimized app requests and caching
Project Tech stack:
React
Redux
Bootstrap
Node.js
JavaScript Engineer
Feb 2018 - Apr 20224 years 2 months
Project Overview

A CMS system for managing articles content for news websites. A lot of different APIs (Twitter, Instagram, Facebook) were used there. Users were able to use rich text editors, and upload videos/images. After article creation, they had a possibility to publish articles to chosen destinations and select publishing date.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • built app architecture
  • added new features
  • fixed issues
  • wrote unit tests
Project Tech stack:
Node.js
React
Redux
css-in-js
EmotionCSS
Fluent-UI
React Native Developer
Jul 2021 - Sep 20212 months
Project Overview

It was an application where users were able to scan and upload photos of flower seeds and detect it’s type with Google Vision API , also rate this products and leave reviews.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • built app structure
  • developed API
  • added new features
Project Tech stack:
React Native
Redux
Node.js
RN UI Kitten
JavaScript Engineer
Jan 2020 - Jan 20211 year
Project Overview

The project was a big marketing survey tool. Users were able to take part in the survey, see their results, graphics, charts, etc.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • built app from scratch according to the design
  • wrote tests
Project Tech stack:
Nest.js
React
Redux
Material UI
JavaScript Engineer
Jan 2019 - Jan 20201 year
Project Overview

Monitoring tool for servers. It monitors different servers fails and warnings in realtime. It was a big calendar screen with events from monitored servers, which were updated via socket connection.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • created REST API
  • developed client web app with React + Material UI
Project Tech stack:
Bootstrap
Node.js
React
Socket.io
FullStack engineer
Dec 2017 - Dec 20192 years
Project Overview

A product for managing social medias. The main feature was to control all user's social profiles (IG, TW, FB) from one place. Users were able to like posts, comment them, publish photos / videos to all their social accounts from one place.

Skeleton
Skeleton
Skeleton
Responsibilities:
  • developed NodeJS server with sockets
  • rewrote ReactJS app from scratch
Project Tech stack:
Node.js
React
Redux
Material UI
MongoDB

Education

2015
Engineering, computer-aided design
Master's

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