Software Developer (Node.js & Angular)

Job Description Software Developer (Node.js, Angular & PostgreSQL/TimescaleDB)

Position: Software Developer – Node.js & Angular
Experience: 3+ Years
Employment Type: Full-Time
Work Location: Karol Bagh, New Delhi
Company: Nucleus Microsystems / M2Cloud
Company Website: M2Cloud
Department: Software Development

About the Role

We are looking for an experienced Full-Stack Software Developer with strong hands-on experience in Node.js, Angular, PostgreSQL, and TimescaleDB.

The selected candidate will be responsible for developing and maintaining a Node.js-based middleware/API platform, a modern Angular web application, and database-driven business modules.

The role involves developing custom modules including user management, inventory, reporting, payment processing, API integrations, dashboards, and time-series data functionality.

Key Responsibilities

1. Node.js Backend & Middleware Development

• Develop and maintain scalable backend applications using Node.js.

• Design and develop RESTful APIs for frontend and third-party applications.

• Develop middleware/API services for integrating multiple systems and services.

• Implement JWT-based authentication and authorization.

• Develop user management, roles, permissions, and access control.

• Develop custom modules including:

• User Management

• Customer Management

• Inventory Management

• Device/Asset Management

• Reports

• Notifications and Alerts

• Configuration and Settings

• Subscription/Service Management

• Other custom application modules

• Develop GET, POST, PUT and DELETE APIs for third-party integrations.

• Implement API validation, authentication, error handling, logging, and security.

• Optimize backend performance and API response times.

2. PostgreSQL & TimescaleDB

• Develop and maintain applications using PostgreSQL.
• Work with TimescaleDB for time-series and telemetry data.
• Design efficient database schemas for transactional and time-series data.
• Develop complex SQL queries, joins, aggregations, and database operations.
• Work with large volumes of time-series data.
• Understand TimescaleDB hypertables, chunks, retention policies, and time-based queries.
• Optimize database queries and indexes.
• Implement data retention and archival strategies.
• Troubleshoot database performance and connectivity issues.
• Maintain data integrity and transaction consistency.

3. Payment Gateway Integration

• Integrate and maintain online payment gateways with Node.js and Angular applications.
• Implement payment initiation, transaction processing, and payment status management.
• Integrate payment gateway APIs and SDKs.
• Implement secure payment callbacks and webhooks.
• Handle successful, failed, cancelled, pending, and expired transactions.
• Implement server-side transaction verification.
• Maintain payment transaction records and history.
• Implement refund and transaction-status functionality where supported.
• Handle payment reconciliation.
• Experience with Razorpay, PayU, Cashfree, Stripe, or similar gateways is an advantage.

4. Angular Frontend Development

• Develop responsive web applications using Angular and TypeScript.
• Build frontend modules consuming APIs from the Node.js middleware.
• Develop dashboards, forms, tables, reports, charts, and administrative interfaces.
• Develop payment-related screens and transaction interfaces.
• Implement JWT-based authentication and session management.
• Implement role-based access and permissions.
• Develop reusable Angular components, services, and modules.
• Integrate REST APIs using RxJS and Angular services.
• Debug and optimize frontend performance.

5. API & Third-Party Integration

• Design and develop APIs for external application integration.
• Integrate third-party APIs and services.
• Work extensively with REST APIs and JSON.
• Implement secure API authentication and authorization.
• Integrate payment, notification, communication, and other external services.
• Prepare and maintain API documentation.
• Troubleshoot API and data synchronization issues.

Mandatory Requirements

The candidate must have professional hands-on experience with all of the following:

• Node.js – Backend and REST API development
• Angular – Frontend application development
• PostgreSQL – Database development and SQL
• TimescaleDB – Time-series data
• REST API development and third-party integrations
• JWT authentication and authorization
• Payment gateway integration
• Git-based development workflow
• Minimum 3 years of relevant professional experience

Candidates with experience limited to only Node.js or only Angular will not be considered.

Technical Skills

Backend

• Node.js
• Express.js or equivalent framework
• REST API development
• JWT authentication
• Role-based authorization
• JSON
• Asynchronous programming
• API security
• Error handling and logging

Frontend

• Angular
• TypeScript
• HTML5
• CSS3
• Angular Services
• Angular Routing
• Reactive Forms
• REST API integration
• RxJS
• Responsive web development

Database

• PostgreSQL
• TimescaleDB
• SQL
• Database design
• CRUD operations
• Joins and aggregations
• Indexing
• Query optimization
• Time-series data management
• Database transactions

Payment Integration

• Payment gateway API/SDK integration
• Payment callbacks and webhooks
• Transaction verification
• Payment status handling
• Refund processing
• Transaction reconciliation

Preferred Additional Skills

Experience with the following will be an advantage:

• IoT / telematics / asset-management applications
• Large-scale time-series data
• Razorpay, PayU, Cashfree, Stripe or similar payment gateways
• Subscription and recurring payment systems
• Real-time applications
• WebSockets
• Docker
• Nginx
• Linux server administration
• Cloud/VPS deployment
• Firebase / push notifications
• Swagger/OpenAPI
• CI/CD
• Postman
• Data visualization and reporting libraries

Candidate Profile

The ideal candidate should:

• Have 3+ years of professional software development experience.
• Be comfortable working across both backend and frontend development.
• Have experience building complete features from database Node.js API Angular frontend.
• Have experience with third-party API and payment gateway integration.
• Understand authentication, authorization, and application security.
• Be capable of independently developing, testing, debugging, and deploying application modules.
• Have strong problem-solving and troubleshooting skills.
• Be comfortable working with an existing codebase and extending functionality.
• Have good communication and documentation skills.

Key Deliverables

The developer will contribute to:

• Node.js middleware and API platform
• Angular web application
• PostgreSQL and TimescaleDB development
• User and role management
• Inventory and asset management
• Reporting modules
• Dashboards and administrative interfaces
• Payment gateway integration
• Third-party API integrations
• Custom business modules
• API documentation
• Testing, debugging, and performance optimization

Education

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field is preferred.

Equivalent practical software development experience may also be considered.

Work Location

Karol Bagh, New Delhi

This is an office-based, full-time position. The selected candidate will be required to work from the company's office in Karol Bagh, New Delhi.

Company: Nucleus Microsystems / M2Cloud
Website: M2Cloud