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)