Senior Software Engineer - MERN Stack
relanto· Digital Transformation
About this role
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
Frequently Asked Questions
Is the salary disclosed for the Senior Software Engineer - MERN Stack position at relanto?
The salary for this Senior Software Engineer - MERN Stack role at relanto is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Senior Software Engineer - MERN Stack position at relanto located?
This Senior Software Engineer - MERN Stack role at relanto is based in Bengaluru, KA, India, Hyderabad, TG, India, Pune, MH, India. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior Software Engineer - MERN Stack role at relanto full-time or part-time?
This is listed as a FULL TIME position. It is posted as a Senior Software Engineer - MERN Stack role in the Digital Transformation department at relanto.
Which team or department does the Senior Software Engineer - MERN Stack at relanto belong to?
This Senior Software Engineer - MERN Stack position is part of the Digital Transformation department at relanto. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior Software Engineer - MERN Stack position at relanto?
Click the "Apply Now" button on this page. You will be redirected to relanto's official application portal hosted on keka where you can submit your application directly.
When was the Senior Software Engineer - MERN Stack job at relanto posted?
This Senior Software Engineer - MERN Stack position at relanto was posted on Sep 30, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior Software Engineer - MERN Stack
relanto
You'll be redirected to relanto's official application page on keka.