Frontend Engineer (Javascript, React)
Sundayy
hybridseniorpermanentfrontend United States Today via LinkedIn
See how well this job matches your profile
Sign up to get an AI match score and generate a tailored application in seconds.
Get your match scoreTags
ReactTypeScriptFrontend PerformanceDesign SystemState ManagementData FetchingCachingComponent ArchitectureTestingOpen Source
About the role
Role overview
Build and champion shared frontend libraries and reusable UI components for a multi-chain crypto wallet platform. You’ll improve frontend performance, evolve the design system, and help ensure a consistent, scalable user experience across teams.
Responsibilities
- Build, own, and promote shared frontend libraries and reusable components to accelerate development and maintain UI consistency
- Lead frontend performance improvements (e.g., optimize bundle sizes, rendering efficiency, and establish best practices)
- Maintain and enhance the design system, keeping it robust, well-documented, and integrated into development workflows
- Collaborate with product and engineering teams to deliver scalable, user-centric features for a multi-chain crypto wallet
- Stay current with emerging frontend technologies and industry best practices
- Ensure code quality via testing, code reviews, and adherence to coding standards
- Support cross-team initiatives to foster a cohesive development environment
Requirements
- Bachelor’s degree in Computer Science/Software Engineering (or equivalent experience)
- 5+ years of full-time software engineering with a strong frontend focus
- Strong proficiency in React and TypeScript (component architecture, state management, performance optimization)
- Experience with data fetching, caching, and efficient application state management
- Interest in open-source/community-driven software
- Excellent communication skills in English
Nice to haves
- Demonstrated open-source involvement and community contributions
About Sundayy
Phantom is a company in the digital finance and crypto ecosystem, building a modern, user-friendly multi-chain crypto wallet. The platform focuses on simplifying blockchain interactions while prioritizing security, speed, and an intuitive user experience for millions of users worldwide.
Scraped 7/30/2026