Senior React Developer (React 19, Performance-First, Web API Integration)

Senior React Developer (React 19, Performance-First, Web API Integration)

Location: Hyderabad , Bangalore, Chennai

Function: Engineering - Application Development

Long Term Contract with possible CTH

Mandatory Skills: React 19, JavaScript (ES6+), TypeScript, Web API / REST API Integration, Microservices, Extensively Claude Code no Claude alone

About the Role

We are hiring a hands-on Senior React Developer with 5-7 years of experience building production-grade frontend applications. You will design and deliver scalable, high-performance React 19 applications that integrate with Web APIs and microservices-based backend systems. Hands-on expertise in React 19, JavaScript (ES6+), TypeScript, and performance optimization is required. Experience using Claude Code in day-to-day development workflows is mandatory or strongly preferred.

What You'll Do

• Design and build scalable, maintainable frontend applications using React 19, JavaScript (ES6+), and TypeScript.
• Architect reusable UI components and frontend modules with clear boundaries and strong code quality.
• Integrate frontend applications with RESTful Web APIs and service endpoints in microservices-based environments.
• Implement robust state management patterns using libraries such as Redux, Zustand, or Context-based architectures.
• Drive performance optimization across load time, rendering, bundle size, and runtime responsiveness.
• Collaborate with product owners, architects, QA, backend engineers, and DevOps to deliver high-quality releases.
• Use Claude Code for implementation support, refactoring, debugging, and test generation.
• Participate in code reviews, root-cause analysis, and production issue resolution.
• Contribute to CI/CD readiness, release excellence, and frontend engineering best practices.

Required

• 5-7 years of software development experience with strong focus on frontend engineering.
• Strong hands-on experience in React 19, modern JavaScript (ES6+), and TypeScript.
• Proven experience building and maintaining scalable UI applications in production.
• Practical experience integrating frontend applications with Web APIs.
• Solid understanding of microservices-based architectures and frontend-backend interaction patterns.
• Hands-on experience with state management libraries (Redux, Zustand, MobX, or equivalent patterns).
• Demonstrated expertise in frontend performance optimization (Core Web Vitals, bundle optimization, lazy loading, memoization, and rendering efficiency).
• Experience using Claude Code in professional development workflows (mandatory or highly preferred).
• Strong understanding of SDLC, code quality, testing, and CI/CD practices.
• Ability to troubleshoot complex technical issues and deliver reliable solutions.
• Familiarity with version control systems (Git) and branching strategies.

Core Competencies

• Performance-First Frontend Engineering Mindset
• Scalable React 19 Architecture and UI Design
• API Integration in Microservices Environments
• State Management and Application Reliability
• Clean Code, Testing, and Maintainability
• Collaboration and Ownership
• AI-Assisted Development Discipline (Claude Code)