Senior React/Next.js Engineer — Remote & Flexible

TransilvaniaHR; United States; Remote; USD 110,000 - 150,000; Full time

Job summary

United States Digital Space LLC is seeking a Frontend Engineer focused on React and Next.js to build a web portal and enhance a Chrome extension. You will implement user-facing features, ensure seamless integration, and optimize performance in a fully remote setup.

Collaborate across teams, write tests, participate in code reviews, and stay updated with browser extension developments. The role requires 6+ years of React/Next.js experience, strong TS, HTML5, CSS3, and API integration skills.

Qualifications

• 6+ years of React/NextJS experience with TypeScript.
• Strong knowledge of HTML5, CSS3, JavaScript, and modern bundlers.
• Experience with state management (Redux, React Query, etc.) and API integration.
• Proficiency with testing frameworks (Jest, React Testing Library).
• Strong Git skills and familiarity with CI/CD workflows.
• Solid understanding of web and extension security practices.
• Effective communication and collaboration skills.

Responsibilities

• Develop and maintain responsive UI components in React/NextJS.
• Design and maintain Chrome extension features (Manifest V3, APIs, security best practices).
• Integrate with backend services via REST or WebSockets.
• Optimize performance through efficient state management and profiling.
• Write unit and integration tests; ensure cross-browser compatibility.
• Contribute to code reviews, documentation, and agile processes.
• Monitor, troubleshoot, and resolve UI, performance, and security issues.
• Stay current with React ecosystem and browser extension updates.

Skills

React

NextJS

TypeScript

HTML5

CSS3

JavaScript

Redux

React Query

API integration

Jest

React Testing Library

Git

CI/CD

Manifest V3

Tools

Jest

React Testing Library

Manifest V3

CI/CD pipelines

Job description

United States Digital Space LLC is seeking a Frontend Engineer focused on React and Next.js to build a web portal and enhance a Chrome extension. You will implement user-facing features, ensure seamless integration, and optimize performance in a fully remote setup.

Collaborate across teams, write tests, participate in code reviews, and stay updated with browser extension developments. The role requires 6+ years of React/Next.js experience, strong TS, HTML5, CSS3, and API integration skills.