Sr. MERN Stack 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).

Job Overview: We are seeking a skilled MERN Stack Developer responsible for designing and developing robust and scalable web applications. The ideal candidate will have a strong understanding of the entire web development process (design, development, and deployment) and be proficient in the MERN stack: MongoDB, Express.js, React.js, and Node.js.

Key Responsibilities:

• Full Stack Development: Design, develop, and deploy full-stack web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js).
• API Development: Build RESTful APIs and integrate them with front-end components.
• Database Management: Design, manage, and optimize MongoDB databases for high-performance and scalability.
• UI/UX Collaboration: Work closely with UI/UX designers to implement responsive and user-friendly interfaces.
• Code Quality: Write clean, maintainable, and efficient code, following best practices and coding standards.
• Testing and Debugging: Perform unit testing, debugging, and integration testing to ensure the quality and functionality of the application.
• Version Control: Use Git for version control and collaborate with other developers on code management.
• Continuous Learning: Stay up-to-date with emerging technologies and best practices in web development and apply them to projects.

Required Skills and Qualifications:

• Proficiency in:
• React.js: Strong understanding of React.js and its core principles, including hooks, state management, and component lifecycle.
• Node.js & Express.js: In-depth knowledge of Node.js and Express.js for server-side development.
• MongoDB: Experience with MongoDB for database design, development, and optimization.
• JavaScript/ES6+: Proficiency in modern JavaScript (ES6+) and understanding of asynchronous programming.

Candidates serving notice period & immediately available can apply, should join within 7 days  Urgent requirement

.

At Mojocare, we’re building a neo-digital clinic enabling Indians to take control of their health,

wellness and happiness. Our mission is to make specialty primary care patient centric,

convenient and accessible to a billion Indians.

Mojocare provides treatment plans that are doctor-approved and backed by science,

personalized for one’s specific wellness goals by our team of reliable clinical experts. We

provide treatment plans across men’s sexual wellness, women’s wellness and PCOS, hair and

skin care, weight management, mental wellness. Our complete ecosystem goes beyond

products, providing the modern consumer access to care and support from a community of

doctors, therapists, dieticians and wellness experts.

We have an ambitious mission and even more ambitious team. Founded by IITians and domain

experts, we are backed by some of the most marquee investors in the country, including the

founders of Lenskart, Cred, Curefit, 1mg, GoMechanic. We have grown 50x in the last 12

months with plans to grow 20x in the next 2 years – come join us to create the future of primary

healthcare, now.

We are looking for well rounded people who care about their craft and understand software

development. While we value a formal degree in computer science we do not require one - a

candidate with a strong background, open mind and ability to learn would be an ideal addition to

our team.

Responsibilities

● Deep understanding of Python/Django and web Architecture

● React Experience and GraphQL Experience is desired

● Strong System design fundamentals

● Maintenance work including but not limited to bug fixes for production, security

vulnerabilities fixes, deployments in production, production outage analysis and fixing.

● Review work estimates, code and deliverables of technical team members and provide

oversight of solution builds. Build highly scalable products, maintain security of data and

stability of the website/app.

● Ensure correct usage of industry standard software and frameworks.

● Coach less-experienced members of your team.

● Grow the internal information technology development organization; manage and recruit

a multi-disciplinary high-performance technology team

Requirements

● Experience in Full stack development

● Expertise with either Python/Django or ReactJS

● Bachelors/Masters in Computer Science from a Tier 1 College/University or equivalent.

● Experience with JIRA, GIT, CI-CD pipelines.

● Ability to adapt to new technologies to meet the changing demands of scalability and

usage, manage traffic and load on the server.

● Experienced with managing security, external authentication, third party security, API

authentication Ability to solve problems creatively and effectively

● Good communication and problem-solving skills

● Good understanding of website architecture and aesthetics

Look forward to:

● Working with a world-class team.

● Fun & work at the same place with an amazing work culture and flexible timings.

● Get ready to transform yourself into a A+ Employee

Join Mojocare and Make History!

About the Role:

We are looking for an experienced Full Stack Developer, focused on writing well structured, efficient and

Maintainable software. You will be working on writing code, tests and documentation for the Network

Management and Head End Systems. You will be interfacing with devices in the field, collecting data from

Electricity meters and networking equipment. Your responsibility will include the data collection services,

External APIs, user interface and data analytics. You will be committed to making a high-quality, fault tolerant

System to interact with physical devices and make collected data available to 3rd party services.

Qualification & Experience:

• Bachelor’s/Master’s degree in Computer Engineering with 2+ experience writing high quality, efficient and

maintainable code.

• Proficiency with Elixir or Erlang. Alternatively experience with at least two of Ruby on Rails, NodeJS, Python,

Lisp/Clojure, Scala, Haskel or similar

• Proficiency with Typescript or Javascript using ReactJS, VueJS or similar.
• Good knowledge of SQL databases (PostgresSQL, MSSQL, Oracle or similar)
• Good knowledge of revision control system like GIT, SVN, TFS or similar
• Experience with NoSQL databases like InfluxDB, Prometheus, Elastic Stack, SOLR or similar is a plus.
• In depth knowledge of Linux would be a plus
• Exposure to schematic and layout design and understanding would be a plus.
• Experience working with the energy metering segment is a plus.

Roles & Responsibilities:

• The selected candidate will be handling software development activities in Elixir and Typescript
• Technical development activities as per client requirements and internal operational processes.
• Coordinate with multi geographical teams for technical development.
• Close coordination with Technical Support team to visit customers and understand

Requirements.

• Maintaining/writing high quality code, tests and documentation

Location: Mohali

Full Stack Developer with excellent and strong experience in the design and development of secure and high performing applications/products using MEAN Stack on Cloud-based architecture using DevOps processes.

Roles and Responsibilities

• Developing front end website architecture
• Designing user interactions on web pages
• Developing back end website applications
• Creating servers and databases for functionality
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications
• Working alongside graphic designers for web design features
• Seeing through a project from conception to finished product.
• Designing and developing APIs
• Meeting both technical and consumer needs
• Staying abreast of developments in web applications and programming languages.

Technical Experience/skills & Qualifications required:

• Degree in Computer Science
• 6 to 8 years of experience in Information Technology with at least 4+ years in MEAN stack development
• Highly experienced with back-end programming languages Ex: Python, Ruby, Java, .NET, JavaScript etc
• Proficient experience using advanced JavaScript libraries and frameworks such as AngularJS, ReactJS, Node JS, KnockoutJS, BackboneJS, etc.
• Development experience for both mobile and desktop.
• Understanding of server-side languages including such-as Jade, EJS, Jinja, etc.
• Experience with cloud message APIs and usage of push notifications
• Experience in development using the DevOps tools like Kubernetes, GitHub, Jenkins
• Experience in developing applications on the cloud platform especially AWS
• Familiarity with database technology such as MySQL, Oracle, and MongoDB
• Understanding and implementation of security and data protection.
• Experience working with JIRA and Gitlab
• Maintain code integrity and organization
• Experience working with graphic designers and converting designs to visual elements.

Other Generic and Behavioural Skills

• Experience in Healthcare domain and HIPAA compliance awareness would be a big plus
• Strong team player and ability to adapt to a dynamic and agile environment
• Design thinking and ability to deliver innovative solutions
• Strong organizational and project management skills
• Excellent verbal communication skills.
• Good problem-solving skills.
• Attention to details

Why should you apply:

• Great opportunity to be a part of booming Healthcare sector and ride the wave
• Big opportunity to work with the leadership team which promotes and encourages innovation-driven thought process and execution
• Opportunity to work with young minds using the latest technologies
• Ability to work in an environment that will enable you to realize ownership with the freedom to learn and deliver a great product
• Fantastic opportunity to grow with the company and achieve great heights of success.

Ability to interact with team members and stakeholders from different cultures within and outside India

• At least 2+ years of product development experience with expertise in designing and implementing high-performance java enterprise applications
• Extensive knowledge in Object-Oriented Programming and Design
• Extensive knowledge of Java, Spring, Spring MVC, Spring Boot, Hibernate, Struts
• Exposure to or experience with Git, Bitbucket, Jira, Jenkins etc.
• Experience with HTML/XHTML, CSS, Javascript, AJAX, DOM, Reactjs
• Extensive knowledge in creating and consuming RESTful API
• Extensive knowledge in automated unit testing using JUnit
• Experience in AWS infrastructure
• Knowledge in writing SQL queries and interacting with database systems such as Oracle, SQL Server,
• Thorough orientation towards Code reviews, Coding standards, Design Standards, and Code Documentation
• Knowledge in design patterns
• Knowledge of Data modeling in RDBMS or NoSQL databases
• A proactive approach to identify alternatives for a given problem statement
• Should have worked on enterprise-class applications
• Should have worked in an Agile environment
• Excellent oral and written communication skills