Senior Software Engineer - MERN Stack

Role Overview:

We are looking for a senior full-stack developer with strong expertise in building and managing API integrations at scale. This is a full-stack role involving both backend service development and frontend application development, with a strong focus on scalable systems and API integrations.

Key Responsibilities:

• •Design and develop scalable backend services using Node.js.
• •Build and maintain RESTful APIs and integration layers with external systems.
• •Develop frontend applications using React.js (or TypeScript-based frameworks).
• •Own end-to-end feature development across backend and frontend.
• •Design and implement API integrations with third-party platforms and internal services.
• •Handle webhooks, event-driven architectures, and async processing.
• •Ensure security, authentication (OAuth/JWT), and data protection.
• •Implement logging, monitoring, and performance optimization.
• •Work closely with product, QA, and DevOps teams for delivery.
• •Mentor junior developers and drive engineering best practices.

Required Skills:

Core Stack

• •8+ years of software development experience
• •Strong expertise in Node.js (must-have)
• •Hands-on experience with React.js or TypeScript-based frontend frameworks
• •Strong proficiency in JavaScript / TypeScript

API & Integration

• •Proven experience designing and implementing REST APIs
• •Strong experience with third-party API integrations
• •Hands-on experience with:
• •Webhooks / event-driven systems
• •Rate limiting, retries, and fault tolerance
• •Data transformation between systems
• •Experience working with external platforms (payments, SaaS tools, enterprise systems, etc.)

Backend Engineering

• •Strong understanding of asynchronous programming and event-driven architecture
• •Experience with database design (MongoDB or other NoSQL/SQL)
• •Ability to build scalable, high-performance services

Security

• •Strong understanding of OAuth 2.0
• •JWT-based authentication
• •Secure API design and data handling

Cloud & DevOps

• •Experience with AWS / Azure / GCP
• •Familiarity with CI/CD pipelines
• •Experience with logging, monitoring, and observability tools