Lead ReactJS Developer — Build Scalable, Modern UIs

Capgemini; East Hanover (NJ); On-site; USD 90,000 - 97,000; Full time

Job summary

Capgemini is seeking a ReactJS Lead Developer to lead front-end and collaborate with back-end teams in Hanover, NJ/ NYC. You will build responsive interfaces using React.js, TypeScript and Redux, while shaping architecture and reusable components.

You will also design and integrate RESTful or GraphQL APIs with Node.js/Express, work with databases like MongoDB or PostgreSQL, and partner with DevOps on CI/CD and cloud deployment (AWS/Azure/GCP).

Qualifications

• Experience with React.js, TypeScript and Redux in building large-scale front-end applications.
• Strong knowledge of modern front-end testing and performance optimization.
• Familiarity with RESTful and GraphQL APIs, Node.js/Express back-end integration.

Responsibilities

• Develop responsive, user-friendly web interfaces using React.js, TypeScript, Redux, or other state management tools.
• Implement reusable components and front-end libraries for future use.
• Ensure UI/UX designs are technically feasible and performant.
• Build secure and scalable RESTful or GraphQL APIs using Node.js, Express, or similar frameworks.
• Integrate front-end applications with databases and services.
• Develop server-side logic, authentication, authorization, and data processing pipelines.
• Work with databases such as MongoDB, PostgreSQL, or MySQL.
• Collaborate with DevOps on CI/CD, cloud deployment (AWS/Azure/GCP), and containerization (Docker).
• Work in an Agile/Scrum environment delivering incremental product updates.
• Participate in code reviews, technical discussions, and architectural decisions.
• Collaborate with stakeholders to determine functional and technical requirements.
• Identify bottlenecks and optimize application performance.
• Ensure high code quality with testing frameworks (Jest, Mocha, Cypress, etc.).
• Troubleshoot and resolve production issues.

Skills

React.js

TypeScript

Redux

Node.js

Express

GraphQL

REST APIs

MongoDB

PostgreSQL

MySQL

Docker

CI/CD

AWS

Azure

GCP

Jest

Mocha

Cypress

Agile/Scrum

Code reviews

Architecture decisions

Tools

Docker

CI/CD Tools

GraphQL

Job description

Capgemini is seeking a ReactJS Lead Developer to lead front-end and collaborate with back-end teams in Hanover, NJ/ NYC. You will build responsive interfaces using React.js, TypeScript and Redux, while shaping architecture and reusable components.

You will also design and integrate RESTful or GraphQL APIs with Node.js/Express, work with databases like MongoDB or PostgreSQL, and partner with DevOps on CI/CD and cloud deployment (AWS/Azure/GCP).