Senior React JS Developer - (On Site)

As a Senior React JS Developer at Cognizant, you will lead the development and implementation of Commerce Microservices, ensure scalability and reliability of microservices, provide secure coding practices for applications, develop high-quality user interfaces using React JS, mentor junior developers, and collaborate with cross-functional teams to meet project requirements effectively.

To qualify for the Senior React JS Developer position at Cognizant, you should have at least 5 years of experience in React JS development, a strong background in Microservices, expertise in secure coding practices for React applications, and a proven track record of building user interfaces. Familiarity with agile development processes is also beneficial.

The salary range for the Senior React JS Developer position at Cognizant varies from $68K to $120K, based on experience and other qualifications. Additionally, this position is eligible for Cognizant’s discretionary annual incentive program, which is performance-based.

Cognizant offers a robust set of benefits for the Senior React JS Developer position, including medical, dental, vision, and life insurance, paid holidays and time off, a 401(k) plan with contributions, long-term and short-term disability, paid parental leave, and an employee stock purchase plan.

Cognizant supports professional development by providing training opportunities through its award-winning Academy team, where you can access hundreds of technical trainings, acquire certifications in the latest technologies, and participate in projects that enhance your skills and knowledge.

Absolutely! React's lifecycle methods, such as componentDidMount, componentDidUpdate, and componentWillUnmount, allow developers to run code at specific points in a component's lifespan. Familiarizing yourself with these methods is crucial for effective state management and side effects in your components.

To ensure security in React applications, I follow best practices such as implementing secure coding techniques, utilizing libraries for sanitization, and regularly conducting code reviews. Employing tools for static code analysis helps catch vulnerabilities early in the development process.

I have extensive experience in designing and deploying microservices with React, focusing on creating modular and scalable applications. I emphasize API-first development and employ consistent communication protocols among services to enhance integration and functionality.

Performance optimization in React is critical. I utilize techniques such as React's memoization, lazy loading, and code splitting. Additionally, I analyze the component rendering process with React's Developer Tools to identify areas needing performance enhancement.

Certainly! Recently, I faced an issue with slow rendering in a large application. I diagnosed the problem to unnecessary re-renders and optimized the components using React.memo and the useCallback hook, which significantly improved performance.

In code reviews, I prioritize clarity and maintainability. I look for adherence to coding standards, efficiency, and proper testing coverage. Constructive feedback is key, as it promotes learning and growth in team members.

When mentoring junior developers, I prioritize hands-on guidance while encouraging independent problem-solving. I provide resources, conduct pair programming sessions, and foster an open environment where they can ask questions freely.

My approach to troubleshooting involves systematic debugging methods, such as using console logs, React DevTools, and libraries for performing error tracking. Understanding where the issue originated assists in crafting an effective solution.

I keep my React skills current by participating in online courses, attending local meetups, contributing to open-source projects, and engaging with the React community through forums and blogs to stay abreast of the latest advancements.

In large-scale React applications, I use state management libraries like Redux or Context API to centralize state management. This approach keeps the application organized and ensures that all components have access to shared state without prop drilling.