MERN Stack Developer

MERN Stack Developer With Data Pipeline & ETL Experience

Senior MERN Stack Developer

data pipelines and ETL (Extract, Transform, Load) processes

Responsibilities

MERN Stack Development

• Lead the design, development, and deployment of complex web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js).
• Develop high-quality, scalable, and maintainable code for both front-end (React.js) and back-end (Node.js/Express.js) components.
• Design and implement RESTful APIs and ensure seamless integration between front-end and back-end services.
• Optimize application performance, scalability, and security across the full stack.
• Write comprehensive unit, integration, and end-to-end tests to ensure code quality and functionality.
• Collaborate closely with product managers, UX/UI designers, and other engineers to translate business requirements into technical solutions.
• Participate actively in code reviews, technical discussions, and sprint planning.
  

Data Pipeline & ETL

• Design, build, and maintain efficient and reliable data pipelines to extract, transform, and load data from various sources into MongoDB or other relevant data stores.
• Develop robust ETL processes using Node.js, Python, or other appropriate tools/scripts to clean, transform, and normalize large datasets.
• Implement data validation, error handling, and monitoring for all data ingestion and transformation processes.
• Optimize data models and database schemas (primarily MongoDB) for performance, scalability, and data integrity.
• Troubleshoot and resolve data-related issues, ensuring data accuracy and consistency across systems.
• Implement strategies for data versioning, auditing, and reconciliation.
• Evaluate and integrate third-party tools or services for data processing, streaming, or warehousing as needed.
  

Qualifications

• 4+ years of professional experience as a Full Stack Developer, with at least 2-3 years specifically focused on the MERN stack.
• Demonstrable experience in designing and building data pipelines and ETL processes.
• Expert proficiency in JavaScript (ES6+) and TypeScript.
• Strong expertise in React.js:
• Component-based architecture, Hooks, Context API / Redux (or other state management).
• Familiarity with modern front-end build pipelines and tools.
• In-depth knowledge of Node.js and Express.js:
• Developing scalable APIs, asynchronous programming, middleware, authentication (JWT).
• Extensive experience with MongoDB:
• Schema design, aggregation framework, indexing, performance optimization.
• Experience with NoSQL databases in general.
• Proficiency with SQL for querying relational databases (if used as source systems for ETL).
• Solid understanding of data warehousing concepts and data modeling principles.
• Experience withversion control systems (Git)and CI/CD pipelines.
• Strong understanding ofRESTful API design principles.
• Familiarity with cloud platforms (e.g., AWS, Azure, GCP) and containerization (Docker, Kubernetes) is a plus.
• Excellent problem-solving, analytical, and debugging skills.
• Strong communication, collaboration, and leadership abilities.
• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
  

Preferred Skills & Experience (Nice To Haves)

• Experience with message queues (e.g., Kafka, RabbitMQ) for data streaming.
• Familiarity with other data processing frameworks (e.g., Apache Spark, Pandas).
• Knowledge of data security best practices.
• Experience with GraphQL.
• Previous experience in a senior or lead developer role, mentoring junior team members.