Hi! My name is Gaurav Kumar

• Directed the development of a scalable notification service for Twimbit Vault using RabbitMQ, enhancing customer engagement and reducing system latency.
• Architected and implemented a multi-tenant SaaS platform using microservices, Node.js, Docker, and AWS (EC2, S3, RDS) to ensure secure, automated cloud deployment and operational efficiency.
• Led a team of 5 engineers to design and implement an in-house CMS with Nextjs + GraphQL APIs (Node.js backend) supporting editor-based publishing workflows for reports, actively used by ~1K users per tenant in production.
• Integrated Salesforce CRM support in Vault CMS to sync leads and contacts seamlessly across tenants and expose GraphQL endpoint to integrate them in chatbot.
• Developed a GraphQL-based data integration system that optimised API performance and minimised response times.
• Mentored junior developers by conducting code reviews and providing guidance on best practices in API design, microservices, and cloud deployment.

• Contributed as a Full Stack Engineer by resolving front-end bugs, refactoring legacy components, and implementing new UI designs in React to enhance usability and aesthetic appeal.
• Implemented design improvements in React to boost user experience and maintain front-end consistency.
• Implemented an Invitation service using Node.js and Express.js that lets admin invite users to the platform via invitation link.

• Migrated a legacy REST API to a GraphQL in Nest.js architecture to improve client-side data fetching and overall system performance by 35%.
• Implemented JWT-based authentication while integrating SQL (PostgreSQL) and NoSQL (MongoDB) databases to support diverse data models.
• Built a feature to filter popular posts using view events, improving content discovery and user engagement.

• Designed and developed a comprehensive full-stack web application using MERN stack to facilitate students' academic journeys, including task management and opportunities application.
• Architected the system using a GraphQL API to seamlessly connect various services, enhancing both functionality and interoperability.
• Implemented a payment system with coins awarded for task completion, allowing students to redeem later.
• Built a reporting service where mentors generate performance reports and students can create shareable report cards.
• Developed an opportunities service where admins create opportunities and track student submissions.

• Developed and maintained backend for a salon appointment booking platform, allowing users to schedule services and receive automated calendar invites.
• Implemented rating and review system for completed jobs, enabling filtering of top salons based on popularity.
• Built REST APIs in Node.js & Express.js with TDD achieving 99.9% test coverage, reducing production bugs.
• Automated AWS deployments with CI/CD, improving release speed by 30%.

Engineered a full stack application enabling students to apply for tasks and allowing companies to post short-term tasks, incorporating a wallet system for rewards upon task completion.

• Implemented key features including company task creation and verification, student task submission, reward allocation upon acceptance, cookie-based authentication, and student profile management with resume generation.
• Utilized the MERN stack to develop a robust application with integrated authentication mechanisms.