Sr. MERN Developer

3 days ago

Surat, Gujarat, India Knovator Technologies Pvt Ltd Full time ₹ 1,50,00,000 - ₹ 2,50,00,000 per year

Job Title : Full-Stack Developer (MERN – Scalable Applications)

Location: Surat (NO WFH )

Experience Minimum 1 + year

Job Summary:

We are looking for a Full Stack Developer (MERN) with hands-on experience in building highly scalable, performance-driven applications. The ideal candidate should have a deep understanding of both front-end and back-end development, microservices, and database optimization for large-scale systems. You will be responsible for designing, developing, and maintaining applications that can handle high concurrency (1,000+ active users) while ensuring performance, reliability, and scalability.

This role involves working closely with cross-functional teams — including product managers, designers, and DevOps engineers — to deliver cutting-edge, enterprise-grade solutions.

Roles & Responsibilities:

  • Design and develop scalable and distributed web applications using the MERN stack (MongoDB, , , ).
  • Build and optimize RESTful APIs for high-performance, concurrent environments.
  • Architect and manage MongoDB databases, ensuring high availability, efficient query performance, and scalability.
  • Implement queueing systems (e.g., BullMQ, RabbitMQ, Kafka, or Redis Queues) for background jobs and asynchronous processing.
  • Optimize server and client performance to support real-time data updates and high concurrent user loads.
  • Collaborate with DevOps to improve deployment pipelines, containerization (Docker), and cloud scalability.
  • Conduct thorough testing, profiling, and debugging to identify performance bottlenecks and optimize both code and infrastructure.
  • Participate in code reviews, architecture discussions, and sprint planning to ensure technical excellence and scalability across all layers.

Qualification / Requirements:

  • Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience).
  • 1+ years of hands-on experience in full-stack development using the MERN stack.
  • Proven experience working on applications supporting 1,000+ concurrent users or large-scale distributed systems.

Strong expertise in:

  • (asynchronous programming, clustering, performance optimization)
  • & (SSR, CSR, and dynamic rendering)
  • MongoDB (aggregation pipelines, indexing, schema design for scalability)
  • Practical experience with message queues (BullMQ, RabbitMQ, Kafka, or Redis Streams).
  • Familiarity with caching mechanisms (Redis, Memcached) to optimize performance.
  • Experience with Docker and microservices-based architectures is a plus.
  • Good understanding of API design, authentication mechanisms (JWT, OAuth), and security best practices.
  • Experience working in Agile environments and using Git-based version control.

Nice to Have:

  • Exposure to serverless computing (AWS Lambda).
  • Experience with monitoring tools (New Relic, Datadog, ELK Stack).
  • Knowledge of CI/CD pipelines and automated deployment workflows.
  • Experience in real-time communication (WebSockets, ).

What We Offer:

  • Opportunity to work on high-traffic, scalable platforms used by thousands of active users.
  • A collaborative environment with a strong focus on technical innovation and system scalability.
  • Competitive compensation and a culture that values growth and learning.

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