Senior Developer (Node.js, React, PWA, MongoDB)

Technology, Data & Digital · Software & Web Development · Software Engineering · Web Development · Frontend

In short

Emerson is seeking a Senior Application Developer with full-stack expertise in Node.js, React, PWA, and MongoDB for a hybrid role in Chandigarh, India. This position involves leading the design and delivery of complex web applications, architecting scalable backend services, and mentoring junior developers.

Responsibilities

Lead the design and delivery of complex full-stack features, owning technical decisions from data model and API contract design through React PWA front-end implementation and production deployment.
Architect and build scalable Node.js backend services and RESTful APIs using Express.js or NestJS, defining patterns for authentication, error handling, versioning, and performance.
Lead PWA architecture decisions, including service worker strategy, offline-first caching design, push notification infrastructure, and app installability.
Design MongoDB data models and aggregation strategies, enforce NoSQL data modeling best practices, and guide data architecture decisions.
Deliver mobile-friendly React front-end interfaces, including responsive layouts, touch-optimized interactions, and performance tuning.
Drive code quality across the team, set standards, lead code reviews, and identify and resolve technical debt proactively.
Mentor and support mid-level and junior developers through code reviews, pair programming, and technical guidance.
Conduct root cause analysis on complex production incidents, lead performance profiling and optimization.
Contribute to technical roadmap discussions, providing engineering input on feasibility, risk, and build-vs-buy decisions.
Participate in Agile ceremonies, contribute to sprint planning, and support delivery of team commitments.

Requirements

Bachelor's degree in Computer Science, Software Engineering, or a related field.
8+ years of full-stack web development experience with demonstrated depth in Node.js backend and React frontend delivery.
Expert-level proficiency in building and operating production Node.js services with Express.js or NestJS, including RESTful API design, middleware architecture, authentication (JWT/OAuth2), performance tuning, and service reliability.
Deep expertise in React development, including component architecture, hooks, state management (Redux or Context API), code splitting, performance optimization, and delivering consistent experiences across device sizes.
Proven experience architecting and shipping Progressive Web Applications (PWA) solutions, including service worker lifecycle management, offline-first caching strategies, web app manifest, push notifications, and installability.
Proven experience delivering web applications optimized for mobile and tablet, responsive and touch-optimized design, mobile performance profiling, Core Web Vitals, and cross-device testing.
Strong hands-on experience with MongoDB, including document and collection design, aggregation pipelines, indexing strategies, performance optimization, and data model design.
Expertise in designing, documenting, and governing REST APIs, including authentication patterns, versioning, contract design, and integration with third-party enterprise services.
Solid familiarity with Git branching strategies, Azure DevOps or similar CI/CD pipelines, and sprint-based delivery; strong English communication skills.

Desired Qualifications

Experience with advanced Workbox strategies, such as background sync, periodic background fetch, and complex multi-layer caching architectures.
Familiarity with Web Push API and push notification infrastructure (FCM, VAPID keys).
Experience with GraphQL or WebSocket-based real-time application patterns.
Knowledge of microservices architecture, including service decomposition, inter-service communication, and API gateway patterns.
Experience with automated testing at scale such as Jest, Cypress, Playwright, PWA-specific offline and installability testing.
Familiarity with Docker and containerized deployment pipelines, and Azure DevOps CI/CD experience.
Exposure to cloud platforms preferably Microsoft Azure, for application hosting, monitoring, and deployment

Benefits

Competitive benefits plans
Variety of medical insurance plans
Employee Assistance Program
Employee resource groups
Recognition
Flexible time off plans
Paid parental leave (maternal and paternal)
Vacation leave
Holiday leave

Skills

Node.jsReactPWAMongoDBExpress.jsNestJSJWTOAuth2ReduxContext APICache APIWorkboxWeb Push APIGraphQLWebSocketGitAzure DevOpsJestCypressPlaywrightDockerMicrosoft Azure

#Node.js#React#PWA#MongoDB#Full Stack#Developer#Senior Developer#Application Developer#Web Application

About Emerson

Emerson is a leading global technology, software, and engineering company providing innovative solutions for customers in industrial and commercial markets. We help customers in the world’s most essential industries solve the biggest challenges of modern life. Every day, our global workforce fulfills our unified Purpose and lives out the Values we hold close as an organization: Integrity, Safety & Quality, Support Our People, Customer Focus, Continuous Improvement, Collaboration, and Innovation. Across the globe, we are united by a singular Purpose: We drive innovation that makes the world…

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