Ajay Singh

• Built and deployed an AI-powered Medical Claims Processing Pipeline for Ayushman Bharat (PM-JAY), leveraging OCR, rule-based validation, ICD-11 mapping, and automated claim decisioning to process 1,000+ claims daily while reducing review time from 15 minutes to 2–3 minutes.

• Developed a claim-readiness validation engine that automatically identified incomplete, inconsistent, or ambiguous PM-JAY cases and generated structured rejection reasons before human review.

• Designed and implemented a production-grade RAG system for clinical document question answering, enabling efficient retrieval and analysis of patient and claim-related information.

• Integrated AI pipelines into the claims portal using Node.js, Express.js, Sequelize, and PostgreSQL, improving workflow automation.

• Architected a secure 3-stage CI/CD pipeline comprising Docker image builds, Trivy vulnerability scanning, and automated deployments.

Tech Stack: Python, Node.js, Express.js, PostgreSQL, Sequelize, OCR, LLMs, RAG, Qdrant, OpenAI GPT, Google Gemini, Docker, CI/CD, LangChain, LangGraph, Postman, REST APIs

• Shipped three production-ready platforms (GigaNext, Giganett, ARN Network) using Node.js, Express.js, Next.js, and React.js with modular REST APIs and Sequelize ORM, improving client engagement and lead generation by 30%.

• Integrated PhonePe Payment Gateway and third-party services, enabling secure transaction processing exceeding ₹2,00,000+ in monthly volume.

• Designed and maintained backend services, database schemas, and API integrations using MySQL and Sequelize ORM.

• Implemented API testing using Postman and unit testing with Jest, while establishing structured logging and centralized error monitoring.

• Optimized application performance through API caching, database query optimization, image compression, and bundle splitting, reducing page load times from 2.5s to 1.4s.

Tech Stack: Next.js, React.js, Node.js, Express.js, MySQL, Sequelize, PhonePe Payment Gateway, Jest, Postman, Tailwind CSS, REST APIs

• Built a real-time performance tracking and career guidance platform enabling users to monitor skill growth and discover relevant job opportunities.

• Architected REST APIs with Node.js and Express.js optimized for low latency and high throughput, ensuring smooth user experience.

• Integrated MongoDB and Firebase to deliver live progress updates with 99% accuracy, improving user engagement.

• Wrote detailed API documentation and collaborated closely with React Native developers, reducing development cycles by 35%.

• Conducted database query tuning and caching strategies to boost app performance by 30% and reduce server response times.

Tech Stack: React Native, Node.js, Express.js, MongoDB, Firebase, TypeScript, Postman, REST APIs

• Designed and implemented the backend architecture for a University Attendance Management System using Node.js, Express.js, and MySQL.

• Developed complex SQL queries and stored procedures to automate attendance tracking, generate reports, and handle absentee exceptions, reducing manual effort by 70%.

• Integrated role-based authentication and secure login systems for students, faculty, and admins ensuring controlled access to data.

• Implemented input validation, error handling, and optimized database indexing, resulting in faster query execution and improved system stability.

• Collaborated closely with faculty stakeholders to gather requirements and deliver a production-ready system.

Tech Stack: Next.js, TypeScript, Node.js, Express.js, MySQL, Postman, Tailwind CSS, REST APIs