React Js Developer

Ethereum Technologies; Chicago (IL); Presencial; USD 90.000 - 150.000; Jornada completa

Descripción de la vacante

Ethereum Technologies in Chicago, IL is seeking a frontend React.js developer to build responsive SPAs and reusable components. You will integrate RESTful APIs, implement authentication with JWT/OAuth, and optimize performance while collaborating with design and backend teams. Experience with testing, modern tooling (Webpack, Vite), and Git workflows is expected.

Join a diverse, Agile team committed to high-quality UI architectures and scalable frontend solutions.

Formación

• Proven experience building responsive web applications with React.js.
• Strong understanding of component architecture, state management, and hooks.
• Experience with RESTful APIs integration and authentication (JWT/OAuth).
• Familiarity with UI frameworks (Bootstrap, Material UI, Tailwind CSS).
• Ability to write unit tests with Jest and React Testing Library and perform code reviews.

Responsabilidades

• Develop responsive and user-friendly web applications using React.js.
• Build reusable components and frontend libraries for future use.
• Develop SPAs using React.js and React Hooks.
• Integrate RESTful APIs and backend services.
• Collaborate with UI/UX designers, backend developers, and QA teams.

Conocimientos

React.js

Frontend development

Hooks

REST APIs

UI/UX collaboration

Testing

Git

Agile/Scrum

React Router

Jest

Herramientas

Webpack

Vite

NPM

VS Code

Chrome DevTools

GitHub

Bitbucket

Jest

React Testing Library

Descripción del empleo

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Roles and 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.

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.