
MERN Stack Developer
Location: Surat, Gujarat (No WFH )
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, Express.js, React/Next.js, Node.js).
- 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:
- Node.js (asynchronous programming, clustering, performance optimization)
- Next.js & React.js (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, Socket.io).

About Knovator Technologies
About
Knovator create IT solutions that our clients love. From handling simple to complex business challenges, we provide custom and
in-depth technical advice and solutions.
We help businesses and startups to achieve growth, efficiency and cost reduction with custom-made technology solutions. We develop
custom web and mobile solutions using a technologies on which Facebook and Google relies on. One of our speciality is best post-
sales support. Get in touch with us if you are looking for any web or mobile solution with best post-sales support.
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Software Engineering
u Strong experience in agile methodologies and test driven development.
u Experience in software development using open source technologies.
u Experience in automated software testing.
u Knowledge in domain-driven design, design patterns and enterprise integration patterns.
u Must have experience in delivering software via complete Continuous Integration and Continuous Delivery (CI/CD) pipeline.
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u Must be able to code in Java (SpingBoot and Spring Cloud Services).
u Experience in some of the technologies below:
o PaaS: Pivotal Cloud Foundy/Openshift/ AWS/ Azure/ Docker/ Kubernetes
o Data: MySQL/ Postgres/ Oracle/ MongoDB/ Elasticsearch
o Cache: Redis/ Memcached
o UI: HTML5,Bootstrap, CSS, Angular 4/ ReactJS/RxJS
- Strong knowledge in CI/CD toolset such as Ansible, Artifactory, Jenkins, BitBucket, SonarQube, Fortify, Flyway, Jira and Confluence.
- Strong knowledge in automated testing toolset such as jUnit, Mockito, cucumber, Selenium etc.
- Strong knowledge in scripting languages such as Groovy and Linux shell.















