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Andrii – JavaScript, React, React Native, experts in Lemon.io

Andrii

From Ukraine (GMT-7)

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Mobile DeveloperSenior
Front-end Web DeveloperSenior
Hire developer
7 years of commercial experience
Adult
Advertising
Analytics
Communications
Consulting services
Data analytics
E-commerce
Human resources
Machine learning
Media
Pet care
Project management
Real estate
Retail
Sales
Telecommunications
AI software
Collaboration tools
CRM
HRMS
Mobile apps
Platforms
Utilities
Lemon.io stats
2
projects done
1284
hours worked
Open
to new offers

Andrii – JavaScript, React, React Native

Meet Andrii — a Senior Mobile/Web Developer who has a pretty mature level of React/React Native application development skills. Andrii has a good experience with React ecosystem. He worked as Team Lead and has experience as a Scrum Master. His previous projects include an analytics automation platform, a media platform, and an app for discounts marketplace.

Main technologies
JavaScript
6 years
React
6 years
React Native
3 years
Next.js
3 years
Expo
1 year
Additional skills
Node.js
Typescript
HTML
Git
Bootstrap
Redux
Recompose
Semantic UI
GraphQL
PostgreSQL
Sentry
Android
Formik
Firebase
Lottie
WebRTC
Material UI
Nest.js
WebSocket
REST API
Amplify
AWS
Google Analytics
Cypress
Jest
Express.js
Tailwind CSS
shadcn
Vite
Chart.js
JSON
Rewards and achievements
Client's favourite
Swift communicator
Testimonials
"Hey! Andrii’s doing great; lots of work, but the communication’s been great & he’s a rockstar "
Ready to start
ASAP
Direct hire
Potentially possible

Ready to get matched with vetted developers fast?
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Experience Highlights

FE Team Lead
May 2024 - Nov 20245 months
Project Overview

The project was created as an internal tool for a real estate company to manage documents and reports. The client is one of the best fast-growing companies Andrii has ever seen.

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Responsibilities:
  • Debugged and resolved the application issue
  • Was in charge of team management
  • Set up the project structure
  • Took part in project discussions from a business point of view
  • Integrated few partner companies' software
Project Tech stack:
React
React Query
React Hook Form
Tailwind CSS
Redux Toolkit
Vite
shadcn
SCSS
Chart.js
GitLab CI
CD
TeamCity
TelegramBotAPI
Lead Front-End developer
Jul 2023 - May 202410 months
Project Overview

A specialized search engine designed for discovering creators on OnlyFans. It allows users to search for profiles using keywords and filters, addressing the platform's lack of a robust native search function. Key features include the ability to refine searches by content type, subscription price, and popularity, helping users find relevant creators efficiently

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Responsibilities:
  • Built and maintained the user Interface using the most relevant tech stack
  • Searched and filtered functionality development and maintaining
  • Took care of security and privacy
  • Integrated advertising services
  • Took care of API integration, BE team requirements management
Project Tech stack:
React
Next.js
Tailwind CSS
CSS
SCSS
Redux Toolkit
Axios
i18next
Xcode
Yarn
Google API and Services
Formik
Typescript
Chrome extensions
Senior Front-End Developer
Apr 2023 - Aug 20234 months
Project Overview

Internal planning system for corporate needs provides a wide range of utilities for project planning, estimations, scheduling, and role delegation. Based on NextJS and AWS services.

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Responsibilities:
  • Integrated project lists displaying functionality with wide filtering and search features
  • Provided unit testing
  • Implemented full project creating and editing process with nested forms and charts
  • Created complex nested expenditure items management system using React Query and Axios libraries
  • Performed semantic and performance optimization of the website pages
  • Provided debugging lessons for the customer-side team
Project Tech stack:
React
Next.js
Redux Toolkit
Amazon Cognito
Typescript
Jest
Unit testing
JavaScript
Semantic UI
Figma
Axios
React Query
Enzyme
Tech Lead
Feb 2023 - Jun 20234 months
Project Overview

An app for corporate clients to monitor colleagues' performance, provide guided tours to maintain mental stability and wellbeing.

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Responsibilities:
  • Created app from scratch
  • Optimized performance
  • Deployed to Google Play market and App Store
  • Took part as a decision-maker to make the app more usable and effective
Project Tech stack:
React
React Hooks
React Native
React Hook Form
Redux
Redux Thunk
AWS
Amazon Cognito
Firebase
Google Analytics
JavaScript
React Native CLI
Visual Studio Code
Xcode
Android Studio
JavaScript Software Engineer, Scrum Team Lead
Mar 2021 - Feb 20231 year 11 months
Project Overview

This Analytics Automation Platform delivers end-to-end automation of analytics, machine learning, and data science processes.

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Responsibilities:
  • Integrated React website and Sitecore service;
  • Developed many features like filtering, form handling, various navigation behavior, and third-party services integration;
  • Managed 3-4 front-end team members;
  • Planned processes and assigned workload to each member, communicated with customers daily.
Project Tech stack:
React
HTML
CSS
JavaScript
Git
Bootstrap
Next.js
Redux
Sitecore
SCSS
Front-End Developer
Jul 2022 - Sep 20221 month
Project Overview

Mobile app for pet owners with ability to manage data about pet, map with pet shelters etc

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Responsibilities:
  • Took part in redesign and implementation of new app screens;
  • Refactored existing codebase;
  • Implemented new atomic structure of app components, reworked models to more optimized ones.
Project Tech stack:
React
JavaScript
React Native
Typescript
CSS
HTML
GraphQL
React Native Camera
Figma
Software Engineer
Oct 2020 - Feb 20214 months
Project Overview

Product's Watch Together white-label solution (SDKs & APIs) powers the world’s best co-viewing experiences for media companies, telcos, sports leagues, and OTT vendors inside their platforms. These include BT Sport, NPO, T-Mobile, FFF, Eurovision Song Contest, ScreenHits, and others.

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Responsibilities:
  • Developed front-end demos;
  • Implemented layout styles with Semantic UI library, CSS, SCSS, Material UI;
  • Created demo apps for users using customer's SDKs (Web SDK, Sync SDK);
  • Developed SDKs (Web SDK, Sync SDK), worked with WebRTC;
  • Restricted customer's back-end part;
  • Developed Admin console for global configuring of SDKs.
Project Tech stack:
React
Redux
PostgreSQL
JavaScript
HTML
CSS
React Native
Hybrid App Development
GraphQL
Material UI
Semantic UI
Reselect
Recompose
Nest.js
WebRTC
Software Engineer
Mar 2020 - Sep 20205 months
Project Overview

A mobile app with a discount list for EU and US stores. Provides some features related to sales, linking to store websites with cashback offers.

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Responsibilities:
  • Implemented discount lists;
  • Built and redesigned app layouts;
  • Integrated deep linking services;
  • Integrated analytics tracking services;
  • Reworked App navigation;
  • Integrated push notifications services;
  • Optimized performance.
Project Tech stack:
React Native
React
Redux
Sentry
Android
JavaScript
Firebase
Lottie
Hybrid App Development
Formik
Branch io
Amplitude
Intercom
Software Engineer
Jan 2019 - Feb 20201 year 1 month
Project Overview

Andrii worked with two applications on the same project. The first was a service for cannabis delivery drivers, and the second was a web store for cannabis delivery companies. The project was bought by another company; now it doesn't work.

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Responsibilities:
  • Developed front-end part with React Native tools;
  • Created driver status service;
  • Created tracking service;
  • Created sorting functionality;
  • Created catalog list;
  • Created product page;
  • Created driver positions map;
  • Implemented layout styles with CSS.
Project Tech stack:
React
React Native
JavaScript
Redux
Next.js
Material UI
PostgreSQL
Recompose
Intercom
Google Notifications
Formik
Reselect

Education

2022
Computer Science
Masters’s degree

Languages

English
Advanced

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