Senior React.js / Full-Stack Developer
Remote (Onsite Interview with Client) Cognizant
Candidate should be from these locations only
- Teaneck, NJ
- Bridgewater, NJ
- New York, NY / Hudson Yards
- Alpharetta & Atlanta, GA
- Plano, TX
- College Station, TX
- Tampa, FL
- Chicago / Naperville, IL
- Philadelphia, PA
- San Francisco & Westlake Village, CA
- Mesa, AZ
- Englewood, CO
We are looking for a Senior React.js Developer with backend experience in Java and/or Python (8-10 years of experience) to design, build, make, reliable and optimize scalable web applications.
Required Skills and Experience
- Design and develop scalable, high-performance React.js applications using modern frontend engineering practices.
- Strong professional experience developing modern web applications using React.js (4-6 years).
- Optimize React applications by reducing unnecessary renders and improving runtime performance using techniques such as useMemo, useCallback, React.memo, and efficient component design.
- Experience building, maintaining, or contributing to reusable component libraries or design systems.
- Strong understanding of frontend application performance, accessibility, maintainability, and scalability.
- Architect frontend solutions from the ground up, ensuring maintainability, reusability, performance, and long-term scalability.
- Build and maintain reusable component libraries and design systems to support consistent user experiences across applications.
- Implement complex state management patterns using Redux Toolkit, React Context, or similar solutions, selecting the right approach based on application complexity and scalability needs.
- Hands-on backend development experience with Java and/or Python (4-6 years), including building or integrating RESTful APIs, backend services, or microservices.
- Testing Strategy: Proficiency in setting up comprehensive testing pyramids, including unit testing (Jest), integration testing (React Testing Library), and E2E testing
- OAuth and Okta authentication experience (implementing secure sign-in, token handling, and integration with Okta/OIDC).
Nice to Have:
- Micro-Frontends: Experience breaking down large monolithic SPAs into independently deployable, loosely coupled micro-frontends.
- CI/CD & DevOps: Familiarity with deploying React applications to cloud platforms (AWS) and integrating frontend builds into CI/CD pipelines
- Cross-Functional Collaboration: Strong communication skills to collaborate effectively with UX/UI designers, backend engineers, and stakeholders.
