MERN Stack developer

Location : Sector 62, Noida (On-site Only)

Type : Full-Time

Experience : 3–5 Years

Company : Ultrashield Technology

We collaborate with global clients across industries such as FinTech, Healthcare, Logistics, OTT, and AI-driven platforms. We’re seeking a highly skilled Full-Stack Developer with deep expertise in the MERN stack, hands-on experience in Spring Boot and Next.js, and practical knowledge of real-time communication technologies like Agora or Twilio.

• Develop and maintain scalable, end-to-end applications using the MERN stack and Next.js.
• Design and implement robust backend services and APIs using Spring Boot (Java).
• Build real-time features like chat, voice, and video calls using Agora, Twilio, or WebRTC.
• Manage both frontend (Next.js / React) and backend (Node.js / Spring Boot) integrations efficiently.
• Work with MongoDB / PostgreSQL for data modeling, optimization, and transactions.
• Implement authentication, authorization, and security using JWT / OAuth2 and Spring Security.
• Integrate third-party APIs, payment gateways, notifications, and cloud media storage (AWS S3, Firebase).
• Optimize performance for web and backend systems (caching, lazy loading, indexing).
• Follow Agile methodologies, participate in sprint planning, and perform code reviews.
• Write clean, reusable, and testable code (unit / integration tests) and maintain proper documentation.

& :

• 3–5 years of proven experience in MERN Stack (MongoDB, Express.js, React.js, Node.js) development.
• Hands-on expertise in Spring Boot (Java) for backend microservices and APIs.
• Strong proficiency in Next.js (SSR, SSG, routing, API routes, caching, and performance optimization).
• Experience implementing real-time communication using Agora, Twilio, or WebRTC.
• Strong understanding of JavaScript, TypeScript, and ES6+.
• Knowledge of Redux / Context API for state management and component architecture.
• Familiarity with AWS / Firebase, RESTful APIs, and modern DevOps practices (CI / CD).
• Proficiency in Git and collaborative workflows.
• Strong debugging, analytical, and problem-solving skills.

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• Experience in React Native for cross-platform mobile applications.
• Familiarity with GraphQL, Socket.io, Redis, or Docker.
• Experience deploying and managing apps on AWS (EC2, S3, CloudFront, RDS) or Firebase.
• Exposure to microservices architecture and performance monitoring tools (Sentry, Datadog, CloudWatch).

✨ Work on high-impact international projects combining web, mobile, and AI-driven tech.

Exposure to modern full-stack architectures and real-time systems.

Email : career@ultrashieldsoftware.com

Include : Resume + GitHub / Portfolio + Live Project Links

Subject : “Full-Stack Developer (MERN + Spring Boot)”