React Developer

Quantum Technologies. LLC; Rhode Island; On-site; USD 110,000 - 160,000; Full time

Job summary

Quantum Technologies. LLC is seeking a highly skilled React/Front-End Developer to design and implement responsive, scalable UI components using React and TypeScript.

You will write clean code, implement comprehensive tests, and collaborate with backend teams to optimize the full web stack. Candidates should have 6–8 years of React/TypeScript experience, strong testing library skills, and a solid background in CI/CD practices.

Qualifications

• 6-8 years hands-on experience with React and TypeScript.
• 6-8 years experience with testing libraries like Jest, React Testing Library, Enzyme.
• 6-8 years experience in responsive UI design and development.
• 5+ years across the full web stack, including protocols and web server optimization.
• 5+ years with CI/CD pipelines and related tools.

Responsibilities

• Design and build responsive, scalable, high-performing UI components using React and TypeScript.
• Write clean, maintainable code following best practices.
• Implement and maintain unit and integration tests with Jest and Testing Library.
• Collaborate with backend teams for seamless full-stack integration.
• Participate in CI/CD pipelines to automate build, test, and deployment.
• Contribute to code reviews and mentor junior developers.

Skills

React

TypeScript

Testing libraries

Jest

React Testing Library

Enzyme

UI/UX responsive design

Full web stack

CI/CD

Web performance

Education

Bachelor's degree in Computer Science

Tools

Webpack

Vite

GitHub Actions

Job description

We are looking for a highly skilledReact/Front-End Developerwith deep expertise in building responsive, high-performing web applications. The ideal candidate will have extensive experience with modern front-end technologies, testing frameworks, and CI/CD practices, along with a strong understanding of the entire web stack.

Key Responsibilities:

• Design and develop responsive, scalable, and high-performing UI components using React and TypeScript.
• Write clean, maintainable, and efficient code following best practices.
• Implement and maintain unit and integration tests using libraries such as Jest, React Testing Library, and Enzyme.
• Optimize web applications for speed, scalability, and performance, including server-side considerations.
• Collaborate with backend teams to ensure seamless integration across the full web stack.
• Work with CI/CD pipelines to automate build, test, and deployment processes.
• Participate in code reviews and provide mentorship to junior developers.

Required Qualifications:

• 6-8 yearsof hands-on experience withReactandTypeScript.
• 6-8 yearsof experience withtesting librarieslikeJest, React Testing Library, Enzyme.
• 6-8 yearsof experience inresponsive UI design and development.
• Strong experience in writingclean, high-quality, scalable code.
• 5+ yearsof experience across thefull web stack, including protocols and web server optimization techniques.
• 5+ yearsof experience withCI/CD pipelinesand related tools.

Preferred Skills:

• Familiarity with modern build tools (Webpack, Vite, etc.).
• Knowledge of performance monitoring and optimization techniques.
• Strong problem-solving and debugging skills.
• Excellent communication and collaboration abilities.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.