Backend Developer

About The Role

Backend Developer

Key Responsibilities

• Design, build, and maintain backend services using Node.js with GraphQL APIs.
• Create efficient and maintainable MongoDB aggregation pipelines for data querying and reporting.
• Ensure GraphQL schema design adheres to best practices for scalability and maintainability.
• Optimize database queries for performance, indexing, and scalability.
• Collaborate with frontend teams to design API contracts and improve data fetching strategies.
• Write clean, reusable, and well-documented backend code.
• Debug and troubleshoot production issues efficiently.
• Implement security best practices in API development.
• Participate in code reviews to maintain high-quality standards.
  

Required Skills & Experience

• 1+ years of experience as a backend developer in a professional setting.
• Strong proficiency in Node.js and JavaScript (ES6+).
• Mandatory hands-on experience with GraphQL (queries, mutations, resolvers, schema stitching, performance optimization).
• Non-negotiable expertise in MongoDB aggregation framework:
• Complex data transformations.
• Multi-collection joins using $lookup.
• Grouping, filtering, projecting, and sorting with performance in mind.
• Query optimization using indexes.
• Experience with MongoDB query profiling and performance tuning.
• Familiarity with database design and data modeling for NoSQL.
• Understanding of authentication/authorization in APIs (JWT, OAuth).
• Experience with Git and version control workflows.
  

Good To Have

• Experience with TypeScript.
• Knowledge of Graphql, Apollo Server and Express.js.
• Familiarity with caching strategies (Redis, in-memory caching).
• Exposure to AWS services (Lambda, S3, EC2, or similar).
  

Soft Skills

• Strong analytical and problem-solving abilities.
• Ability to work independently and debug complex backend issues.
• Effective communication and collaboration with cross-functional teams.
• Proactive learning attitude to keep up with evolving backend technologies.