Senior Frontend Developer React / Typescript / Javascript / Ruby / Node.js

Experience

Senior Frontend Developer, Freelancer 09.2021 – now
Projects: Online casino, Ad aggregator, Project management
Acomplishments:
Covered complex code base with unit / integration tests, mentored other developers in writing tests
Developed components for A/B testing which allowed to increase income by decreasing development time to 30%
Made major refactoring, which allowed to develop faster by 20%
Technologies: React, Next.js Javascript, Typescript, Redux-toolkit, materialUI, testing-library/react, jest, Formik, Google maps.
Senior Frontend Developer, Brocoders
06.2019 – 09.2021
Project: HR management system, team of 10
Acomplishments:
Covered both frontend and backend projects with tests, which reduced
manual testing and regression time by 45%.
Made significant refacoring which improved development speed by 30%
Migrated project from javascript to typescript / React
Technologies: React, Javascript, Typescript, Node.js, Nest.js, ruby, rails, Postgres, jest
Frontend Developer, Soft Industry (FedEX outstaff)
11.2017 – 06.2019
Project: package tracking, 3D package modeling, conveyor line realtime simulator
Acomplishments:
Created friendly local development and test environment which increased development time by 20%
Migrated two existing projects from javascript to npm ecosystem
Refactored the application to make it easier to customize, which improved product sales
Technologies: React, Redux, vanilla javascript, three.js, canvas, CSS 3
Autotests engineer, Netcracker
08.2016 – 11.2017
Project: Network management system for Ecuador telecom
Acomplishments:
Increased project integration testing coverage by 30%
Increased tests development speed by 20% by creating utils
Created factories for generating test data
Technologies: Javascript, Java, Selenium

Skills

JavaScript Node.js Redux CSS3 TypeScript React Jest testing-library/react React Hooks Nest.js Ruby RSpec Ruby on Rails Playw Webpack Figma Jira Material UI Next.js HTML5

Highlights

• Covered project by tests, made available easy test-debugging, significantly reduced need in api manual testing
• Refactored complex codebase and made scalable existing frontend project.
• Covered frontend project with integration tests which reduced manual testing and regression time by 25%.
• Made significant refacoring which improved development speed by 30%
• Migrated project from javascript to typescript
• Transfered react projects from class-components to hooks (using tests), from javascript to react + typescript, javascript to typescript.
• Created friendly local development environment instead of editing remote files, which decreased development time by 20%
• Mentored team members in tests wrighting

Looking for

Currently looking for a remote job with flexible schedule and friendly team. Salary negotiable.

Preferred language

Українська, English