Senior React Developer - UI, SSR & TypeScript

Quantum Technologies. LLC; Plano (TX); On-site; USD 110,000 - 165,000; Full time

Job summary

Quantum Technologies, LLC is seeking a senior frontend engineer to build scalable UI components in React.js. You will collaborate with designers, translate mockups into responsive interfaces, and connect frontend with backend services via RESTful APIs.

You will work with Redux/Context for state, adopt Next.js SSR, write tests with Jest, and optimize performance. Strong HTML5/CSS3, TypeScript, Git, Webpack, and accessibility practices are essential.

Qualifications

• Bachelor's degree in CS/Engineering or equivalent practical experience.
• 6+ years of professional React.js development experience.
• Hands-on with React Hooks, Context API, and lifecycle methods.
• Strong HTML5, CSS3, and responsive web development skills.
• Experience with Redux or MobX and RESTful APIs integration.
• Familiarity with Webpack/Babel; version control with Git.
• Experience with TypeScript and Next.js SSR; testing with Jest/RTL.
• Knowledge of frontend performance optimization and accessibility.

Responsibilities

• Build reusable, modular, scalable UI components.
• Collaborate with UI/UX designers to translate designs into responsive interfaces.
• Integrate frontend applications with backend services using RESTful APIs.
• Implement state management with Redux, Context API, or MobX.
• Optimize applications for performance, scalability, and responsiveness.
• Troubleshoot and resolve bugs and performance issues.
• Write clean, maintainable code and participate in code reviews.

Skills

React.js

React Hooks

Context API

Component lifecycle

HTML5

CSS3

Responsive web

Redux

MobX

RESTful APIs

TypeScript

SSR/Next.js

Jest

React Testing Library

Performance optimization

Web accessibility

Education

Bachelor's degree or equivalent practical experience

Tools

Webpack

Babel

Git

Next.js

Jest

Job description

Quantum Technologies, LLC is seeking a senior frontend engineer to build scalable UI components in React.js. You will collaborate with designers, translate mockups into responsive interfaces, and connect frontend with backend services via RESTful APIs.

You will work with Redux/Context for state, adopt Next.js SSR, write tests with Jest, and optimize performance. Strong HTML5/CSS3, TypeScript, Git, Webpack, and accessibility practices are essential.