> Markdown version of [/jobs/ext/4639233-react-developer](https://www.wearedevelopers.com/jobs/ext/4639233-react-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # React Developer - **Company:** Intone Networks - **Location:** San Leandro, CA, United States - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Testing (Software), HTML, JavaScript (Programming Language), Web Accessibility, Application Programming Interfaces (APIs), JIRA, Automation of Tests, Unit Testing, Cascading Style Sheets (CSS), Code Review, Programming Tools, Web Development, Github, Design of User Interfaces, Human-Computer Interaction, HP Systems Insight Manager, Ada Compliance, Software Engineering, TypeScript, Web Applications, Web Application Frameworks, Web Services, RxJS, ReactJS, Pixel Perfect, Webpack, Information Technology, Figma, Web Technologies, Front End Software Development, React Redux, React Testing Library, JestJS, Restful APIs, Es2015, Splunk, Software Version Control, Jasmine - **Published:** November 8, 2026 - **Apply:** https://www.careerbuilder.com/job-details/react-developer-san-leandro-ca--40580120-5d84-432e-84d0-58109b9be897 ## About the Role Internet Technology, JavaScript Frameworks, User Interface/Experience (UI/UX), Internet Application, React.js, REST (Representational State Transfer), Web Services, Application Programming Interface (API), Unit Test, Software Testing, * Required * 5+ years of Software Engineering experience * Preferred * 4+ years of experience with modern HTML, CSS, JavaScript (ES6+), and TypeScript * 5+ years of Web Development experience with modern JavaScript frameworks such as React * Experience creating pixel-perfect, robust, and developer-friendly user interfaces and web applications * Experience with ReactJS * Experience with JestJS * Experience with React Testing Library (RTL) * Experience with Webpack * Experience with StorybookJS * Experience with StencilJS * Experience building RESTful APIs and web services * Experience creating large-scale web applications with ReactJS * Familiarity with complex state management tools such as Redux or RxJS * Experience writing UI unit tests with Jest, Jasmine, or similar frameworks * Knowledge of BDD and automated testing practices * Knowledge of Accessibility and ADA compliance * Experience with code hosting and version control platforms such as GitHub * Experience with project tracking software such as Jira * Experience with application monitoring tools such as Splunk * Experience with Content Management Systems (CMS) * Experience with interface design tools such as Figma or InVision ## Description We are hiring a React Developer for a contract position based in San Leandro, California. This is a 6+ month engagement focused on front-end development with modern JavaScript frameworks and web technologies., * Develop and maintain user interfaces and web applications using React and modern JavaScript * Write clean, high-quality, and developer-friendly code for front-end components * Build RESTful APIs and web services * Create and execute UI unit tests using testing frameworks * Collaborate with cross-functional teams on large-scale web application development * Implement state management solutions for complex application requirements * Optimize applications for high performance * Mentor and guide other developers on projects and initiatives * Troubleshoot and resolve technical issues using developer tools * Participate in code review and version control practices