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Sasha – React, Redux, JavaScript, experts in Lemon.io

Sasha

From Ukraine (GMT+3)

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Front-end Web DeveloperSenior
Hire developer
8 years of commercial experience
Communications
Cryptocurrency
E-commerce
Edtech
Fintech
Healthcare
Healthtech
Management
Marketing
Productivity
Project management
Retail
Collaboration tools
Communication tools
Platforms
SaaS
Lemon.io stats
2
projects done
4200
hours worked
Open
to new offers

Sasha – React, Redux, JavaScript

A Senior JS developer specializing in building web apps and web optimization with 8+ years of experience behind her back. Our technical interviewer described Sasha as an open-minded person with great problem-solving skills. She combines it with a decent knowledge of JS and React fundamentals and principles. Her experience includes working as a developer of social proof features for e-commerce websites, creating an impact map addon for Jira, and a healthcare web platform.

Main technologies
React
5 years
Redux
4 years
JavaScript
4 years
Typescript
2 years
Next.js
2 years
Additional skills
Vue.js
Express.js
REST API
Sentry
AWS
Styled-components
Firebase
Socket.io
Webpack
HTML
Prisma
Ant Design
React Native
Redux Toolkit
Web 3.0
Canvas
Tailwind CSS
Redux Saga
Vuex
Redux Thunk
SASS
Material UI
CSS
Node.js
Ready to start
ASAP
Direct hire
Potentially possible

Experience Highlights

Senior front-end developer
May 2023 - May 20241 year
Project Overview

A financial media and education platform, and a global online community.

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Responsibilities:
  • implemented redesign UI for platform 2.0
  • implemented features existing in 1.0 for 2.0 app
  • implemented new features (form/state heavy features, realtime messaging), fixed bugs
  • worked on refactoring of logic heavy parts of application
  • maintained storybook and unit tests
  • maintained e2e tests (cypress)
  • was taking a part in feature refinement and estimation processes
Project Tech stack:
Next.js
React Query
GraphQL
Storybook
Cypress
Jest
Typescript
Lottie
Quill.js
Microsoft Azure
Senior Front-end developer
Nov 2021 - Jan 20231 year 2 months
Project Overview

Fintech project providing social layer to investment (focusing on web3: tokens and NFTs). Web app provides anyone with an easy way to explore what others are investing in, see stats and leaderboards based on investment performance, make/copy trades, create/explore/follow/join groups, get notified when trades happen.

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Responsibilities:
  • setup web app structure
  • built visually attractive (and reusable) components and interactions for the best look and feel of the app
  • built complex animations for the home page
  • worked with customisable graphs and data representation components
  • created a unified approach to handle different 3rd party libraries for web3 authentication using hooks
  • built minimal image editor for creating NFTs/Ads based on AI-generated images

Routine responsibilities:

  • kept codebase maintainable
  • kept the app performant both on desktop and mobile
  • kept improving app usability: better handling of existing case scenarios within provided design guides
Project Tech stack:
React
Typescript
Redux Toolkit
Ant Design
react-router
Styled-components
Web 3.0
Prisma
Tailwind CSS
React Native
Canvas
Next.js
Front-end developer
Jul 2018 - May 20212 years 10 months
Project Overview

Reporting UI for measuring company performance powered by Jira data designed to help cross-functional team supervisors to better manage team/client delivery and cross team work. UI consists of graphs, tables, filters and colour coding in order to put emphasis on weak/problematic points, help plan and estimate weekly goals, better allocate resources. Allows to analyse deliverables on company/team/client/contract level.

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Responsibilities:
  • was responsible for implementing UI and connecting it to Jira API while keeping the code base clear, maintainable, and easily extensible/reusable
  • kept logic implementation compatible with other related reporting solutions planned for implementation or update (such as Slack bot report, MacOS bitbar app).
Project Tech stack:
React
Redux
Redux Thunk
Styled-components
Atlaskit
Jira REST API
Firebase
Front-End Developer / Technical Consultant
Oct 2019 - May 20211 year 7 months
Project Overview

Set of features for marketers to deliver personalized dynamic experience to retail website users. Fixed cross website banner powered by marketing schedule data displays current promotion, user's progress with it and navigation suggestions. Based on setup by marketing team banner can display multiple promotions in form of a carousel, each can contain timer respecting user's timezone, progress bar updated real time in response to user's actions, can have different styling for each promotion, can be switched on and off or updated easily by marketing team.

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Responsibilities:
  • was involved in all stages of this project: ideation, requirements gathering, and front-end implementation
  • set up A/B tests and results interpretation, functionality monitoring and maintenance
  • wrote and updated documentation
  • supported marketing team
  • improved existing features and implemented new ones
  • implemented setup that will enable the distributed marketing team to use google docs they are comfortable with as a self-documented database and a preview/launch tool
Project Tech stack:
ECMAScript 6
Rollup.js
SASS
Google Docs API
Google Apps Script
AWS
Sentry
Front-end developer
May 2019 - May 20212 years
Project Overview

Strategy management visualization tool that allows account managers to see tree-like representation of business goals and their respective actors, impacts, deliverables with its relations and statuses; create new ideas within map that will automatically create/update respective tickets in Jira; rearrange impact map in order to emphasize current priorities; share visualization with others while respecting each user's access rights.

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Responsibilities:
  • was responsible for integrating the mind-map library with Jira API
  • implemented UI elements
  • worked with user feedback in order to improve existing functionality
Project Tech stack:
Vue.js
Vuex
Jira REST API
Atlaskit
Firebase
Front-end developer
Oct 2016 - May 20181 year 7 months
Project Overview

The app for hospitals designed to connect medical personnel with patients. Users can manage their public and medical profiles and connections, use one-to-one and group chats, share files, manage and use health surveys, create and get access to online groups, and create posts and comments. The app has a complex permission system to handle access rights and UI for each user depending on its role(s) in a patient context that may occur simultaneously (primary health practitioner, healthcare team member, patient, family member, caregiver, legal attorney).

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Responsibilities:
  • was involved in building the application from scratch: app structure, UI kit, and components, API middleware, access logic handling in UI, accessibility features, improving UI performance, and javascript chat library to handle a large number of connections
Project Tech stack:
React
Redux
Redux Saga
CSS Modules
Socket.io
Intl
Webpack

Education

2013
Management
Bachelor's

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