Senior Full Stack Developer

Merkle is seeking a Senior Full Stack Developer with expertise in GraphQL to join their team in Gurgaon/Gurugram. This permanent role focuses on designing, developing, and optimizing high-performance GraphQL APIs and full-stack applications.

Key Responsibilities:

• Design and optimize high-performance GraphQL Schemas and APIs, focusing on schema design, query optimization, real-time data, and schema evolution.
• Implement Supergraph/Subgraph architectures to decompose monolithic schemas and aggregate existing REST APIs, services, and data stores into a unified graph.
• Manage graph-to-graph interactions, integrating, transforming, and aggregating data across multiple GraphQL APIs.
• Lead Full Stack MERN development, ensuring seamless GraphQL integration between front-end (React.js) and back-end (NEST.js / Express.js) components.
• Utilize Azure Cloud for deploying, scaling, and maintaining applications, including serverless architectures.
• Translate design mockups into responsive, accessible user interfaces adhering to design systems.
• Ensure code quality and stability through comprehensive unit and integration testing (e.g., Jest.js).
• Build and manage automated CI/CD DevSecOps pipelines that incorporate security and accommodate GraphQL schema changes.
• Provide production support, including monitoring, troubleshooting, and performance optimization.
• Contribute to architectural discussions for scalable, secure GraphQL APIs and microservices.
• Maintain clear API documentation, including detailed GraphQL schema usage examples.
• Stay updated on industry trends and share best practices.

Must-Have Skills:

• Deep expertise in Server-side JavaScript.
• Proficiency in React.js and back-end development with NEST.js or Express.js.
• In-depth knowledge of GraphQL concepts (schemas, mutations, queries).
• Extensive experience with GraphQL API design and implementation, including schema design, resolvers, and data fetching.
• Hands-on experience with Federated Graph solutions and Supergraph/Subgraph architectures (e.g., Apollo Federation).
• Expertise with advanced GraphQL patterns like Subscriptions.
• Proficiency in TypeScript.
• Extensive experience with Cloud and Serverless services.
• Ability to translate UX designs into pixel-perfect interfaces.
• Skilled in unit and integration testing (e.g., Jest.js).
• Experience with CI/CD pipelines and DevSecOps practices.
• Proven track record in production troubleshooting and performance tuning.
• Familiarity with microservices architecture and modern build tools.
• Commitment to building reusable, maintainable components.
• Experience with a GraphQL schema-first approach.
• Experience with WunderGraph Cosmo Cloud and Cosmo Router is preferred, or alternatively with Apollo GraphQL.

Good to Have Skills:

• Expertise in Azure serverless technologies (Azure Functions, Storage, Cosmos DB).
• Experience integrating Large Language Model (LLM) APIs.
• Background in creative production platforms.
• Proficiency in Python.
• Experience with relational databases (e.g., PostgreSQL, MySQL) and database design.