MERN Stack developer

4 weeks ago

Delhi, India ULTRASHIELD TECHNOLOGY Full time

- ( + )Location: Sector 62, Noida (On-site Only)Type: Full-TimeExperience: 3–5 YearsCompany: Ultrashield TechnologyWe 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.{ }• 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: Include: Resume + GitHub/Portfolio + Live Project LinksSubject: “Full-Stack Developer (MERN + Spring Boot)”

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