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Experience: 6+ yrs

Location: Gurugram, Haryana, India

Job Type: Full-time

We are looking for an experienced Backend Developer with strong expertise in Node.js and MongoDB to design, develop, and maintain scalable, secure, and high-performance backend systems. The ideal candidate will have a solid understanding of server-side development, API architecture, database design, and distributed systems.

You will play a key role in building reliable backend services, improving application performance, and developing robust solutions that support business and product growth. This role requires strong problem-solving skills, technical ownership, and the ability to collaborate effectively with cross-functional engineering teams.

Requirements Key Responsibilities

- Design, develop, and maintain scalable backend applications and services using Node.js
- Build secure, efficient, and well-documented RESTful APIs and backend integrations
- Design and optimise MongoDB schemas, collections, indexes, aggregation pipelines, and database queries
- Develop reusable, modular, and maintainable code following established software engineering principles
- Implement authentication, authorisation, data validation, error handling, and appropriate security controls
- Design backend architectures that support high availability, scalability, reliability, and performance
- Identify and resolve performance bottlenecks across APIs, database operations, and application services
- Integrate third-party APIs, external services, and internal systems
- Write unit and integration tests to maintain code quality and application reliability




- Participate in code reviews, technical design discussions, and architecture planning
- Collaborate with frontend, Product, QA, and DevOps teams to deliver features efficiently
- Troubleshoot production issues, conduct root-cause analysis, and implement long-term fixes
- Support deployment pipelines, application monitoring, logging, and production releases
- Maintain technical documentation and contribute to coding standards and development best practices
- Evaluate emerging backend technologies and identify opportunities to improve system efficiency

What Makes You a Great Fit
- 6+ years of professional experience in backend development, with strong hands-on expertise in Node.js
- Proficiency in JavaScript and TypeScript, including asynchronous programming and modern language features
- Strong experience developing production-grade backend applications using Node.js frameworks such as Express.js or NestJS
- Proven expertise in MongoDB, including schema design, indexing, query optimisation, and aggregation pipelines
- Strong understanding of REST APIs, microservices, and service-oriented architecture
- Knowledge of authentication, authorisation, API security, and secure coding practices
- Experience with Git, automated testing, CI/CD, and up-to-date development workflows
- Familiarity with Docker, cloud platforms, caching, message queues, and application monitoring is an advantage
- Strong debugging, analytical, and problem-solving skills
- Excellent communication and collaboration skills, with the ability to take ownership of complex technical deliverables
- A commitment to clean code, performance optimisation, system reliability, and continuous improvement

📌 Backend Developer (Gurugram)
🏢 Weekday AI (YC W21)
📍 Gurugram