React.js Frontend Engineer: Build Fast, Scalable UIs

Robotics Technologies LLC; Chicago (IL); On-site; USD 90,000 - 130,000; Full time

Job summary

Robotics Technologies LLC in Chicago, IL is seeking a skilled React.js frontend engineer to develop responsive, user-friendly web apps and SPAs. You will build reusable components, integrate REST APIs, and implement authentication with JWT/OAuth while collaborating with cross-functional teams.

The role emphasizes performance optimization, modern UI frameworks, testing with Jest, and adherence to Agile/Scrum processes. Strong tooling knowledge (Webpack, Vite, npm) and CI collaboration are valued.

Qualifications

• Experience with React.js and modern frontend tooling.
• Ability to build scalable SPAs and reusable UI components.
• Familiarity with RESTful APIs and JWT/OAuth security.

Responsibilities

• Develop responsive and user-friendly web applications using React.js.
• Build reusable components and frontend libraries for future use.
• Develop single-page applications (SPAs) using React.js.
• Work with React Hooks such as useState, useEffect, useContext, and useMemo.
• Integrate RESTful APIs and backend services.
• Develop responsive UI layouts using HTML5, CSS3, Bootstrap, and Material UI.
• Optimize application performance and improve page loading speed.
• Debug and resolve UI and application-related issues.
• Collaborate with UI/UX designers, backend developers, and QA teams.
• Participate in code reviews and follow coding standards.
• Implement authentication and authorization using JWT and OAuth.
• Write unit tests using Jest and React Testing Library.
• Use Git for version control and collaborate through Agile/Scrum methodologies.
• React Concepts: Components, Props, State, Hooks, Lifecycle Methods.
• UI Frameworks: Bootstrap, Material UI, Tailwind CSS.
• Routing: React Router.
• Testing: Jest, React Testing Library.
• Build Tools: Webpack, Vite, npm.
• Version Control: Git, GitHub, Bitbucket.
• Development Tools: VS Code, Chrome DevTools.

Job description

Robotics Technologies LLC in Chicago, IL is seeking a skilled React.js frontend engineer to develop responsive, user-friendly web apps and SPAs. You will build reusable components, integrate REST APIs, and implement authentication with JWT/OAuth while collaborating with cross-functional teams.

The role emphasizes performance optimization, modern UI frameworks, testing with Jest, and adherence to Agile/Scrum processes. Strong tooling knowledge (Webpack, Vite, npm) and CI collaboration are valued.