Fullstack Developer

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).

What You will do

● Create beautiful software experiences for our clients using design thinking, lean and agile methodology.

● Work on software products designed from scratch using the latest cutting edge technologies, platforms and languages such as JAVA, python, Javascript, GoLang and Scala.

● Work in a dynamic, collaborative, transparent, non-hierarchical culture.

● Work in collaborative, fast-paced and value-driven teams to build innovative customer experiences for our clients.

● Help to grow the next generation of developers and have a positive impact on the industry.

Basic Qualifications

● Experience: 4+ years.

● Hands-on development experience with a broad mix of languages such as JAVA, Python, Javascript etc.

● Server-side development experience mainly in JAVA, (Python and nodeJS can be considerable)

● UI development experience in ReactJS or AngularJS or PolymerJS or EmberJS or Jquery etc. are good to have.

● Passion for software engineering and follow the best coding concepts. ● Good to great problem solving and communication skills. Nice to have

Qualifications

● Product and customer-centric mindset.

● Great OO skills, including design patterns.

● Experience with devops, continuous integration & deployment.

● Exposure to big data technologies, Machine Learning and NLP will be a plus.

Benefits

● Competitive salary.

● Work from anywhere.

● Learning and gaining experience rapidly.

● Reimbursement for basic working set up at home.

● Insurance (including a top up insurance for COVID).

Location Remote - work from anywhere.

About us:

Zemoso Technologies is a Software Product Market Fit Studio that brings silicon valley style rapid prototyping and rapid application builds to Entrepreneurs and Corporate innovation. We offer Innovation as a service and work on ideas from scratch and take it to the Product Market Fit stage using Design Thinking->Lean Execution->Agile Methodology.

We were featured as one of Deloitte Fastest 50 growing tech companies from India thrice (2016, 2018 and 2019). We were also featured in Deloitte Technology Fast 500 Asia Pacific both in 2016 and 2018.

We are located in Hyderabad, India, and Dallas, US. We have recently incorporated another office in Waterloo, Canada. Our founders have had past successes - founded a decision management company acquired by SAP AG (now part of Hana Big data stack & NetWeaver BPM), early engineering team of Zoho (leading billion $ SaaS player) & some Private Equity experience.

Marquee customers along with some exciting start-ups are part of our clientele.

 Strong experience in front-end design and development minimum 3+ Year to implement responsive, robust/secure, user-friendly/functional, network -sensitive web applications.  Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.  Experience with modern frameworks such as Nodejs, AngularJS Express  Experience in building API and WebSockets for client-server communication with security considerations.  Experience with server-side.  Experience with web services API integration (Rest, JSON, XML).  Ability to understand requirements and map to technical implementation.  Strong knowledge of best practices and modern web design trends is necessary.  Excel at rapid prototyping and at writing good code.  Experience with modern version control.  (GIT or BitBucket).  Experience with testing/debugging in multiple platforms.  Experience with HTML CSS frameworks such as bootstrap.  Understanding of general user experience and UI design principles.  Agile methodologies.  Self-motivated, thinking up and executing own ideas. 

Desired Candidate Profile Below are the qualifications and skills that are expedcte of a full-stack developer:

 Bachelor’s degree in computer science, engineering, or a related technical field  Excellent knowledge of front-end web programming languages, such as HTML, CSS, JavaScript, and AngularJS, with ability to render server-side and client-side content  A working knowledge of shopify app development with technologies, Node, Javascript, React, HTML, CSS3, AWS etc and MongoDB or relevant databases.  Familiarity with common programming design patterns and best practices  Experience with common web development tools and services, such as version control software, package managers, and CI/CD pipelines  Excellent written and verbal communication skills  Expert in JavaScript, DOM, CSS3 and HTML

• Bring in a "can-do" attitude
• Passion towards technology and software engineering - open source, pet projects, conference talks, getting better at writing clean code.
• Participate in a highly fluid environment applying agile software development principles.
• Carry out unit tests and other quality control mechanisms to inform and validate the designs and code
• Work with product owner/BAs to bring an end to end perspective of the problem.
• Ability to ask the right questions and communicate your ideas with clarity.
• Ability to collaborate with various stakeholders and take complete ownership.
• Participate actively in building one of the most impactful organizations in retail technology.

• Quickly adapt to our startup environment which is both demanding and fast-paced (but is also a lot of fun).
• Eager in learning new concepts, technologies and be productive in short time.
• Convert a raw idea into usable real-life software products Write modular, readable and maintainable code.
• Good understanding and working knowledge of technologies worked.
• Demonstrate good problem solving skills
• Own and be able to manage a small to medium sized modules.
• Demonstrate ability to guide and coach a new team member or fresher.