Ambuj Rajput

HCL Technologies · O'Fallon, MO

Account Catalog Interface — Universal Specification Processor

• Designed and developed Spring Boot RESTful APIs integrated with API Gateway and Akamai CDN, processing 100K+ daily requests with 99.9% uptime for customer onboarding services
• Built event-driven architecture using Apache Kafka, implementing RBAC with OAuth 2.0 to securely propagate financial transaction data across distributed microservices
• Optimized Spring Batch processing pipelines, reducing execution time by 20% and improving system reliability through automated testing achieving 95%+ test coverage
• Implemented resilience patterns including retries, timeouts, and idempotent API design to ensure fault-tolerant processing of high-volume financial transactions
• Designed and maintained OpenAPI/Swagger specifications for REST services, enabling standardized API documentation, contract validation, and cross-team integration
• Optimized Kafka topic configuration, partition strategies, and consumer group scaling to support reliable high-throughput event streaming across services
• Led adoption of Spring AI and Retrieval-Augmented Generation (RAG) enabling contextual analysis of PCF and Splunk logs directly within IntelliJ using MCP integrations, reducing debugging time by 30%
• Mentored engineers and introduced AI-assisted development workflows using GitHub Copilot Enterprise, improving development productivity by 25% while maintaining code quality standards
• Enhanced system observability with Splunk, Dynatrace, Micrometer, and Prometheus, reducing MTTR by 25%
• Supported and modernized legacy Mainframe/DB2 applications, facilitating cloud migration

Ingenuity Gaming · Noida, India

Remote Gaming Service — Casino Platform Backend

• Engineered scalable microservices-based backend using Spring Boot and Docker, supporting 1,000+ concurrent users with 99.9% uptime
• Conducted technical design and requirement analysis, delivering 5+ games ahead of schedule
• Implemented real-time monitoring with Splunk and Dynatrace, reducing incident response time by 20%
• Led code reviews using SonarQube, ensuring 90%+ code quality compliance and reducing technical debt by 15%
• Designed and implemented JWT/OAuth-based authentication with Keycloak and OpenID Connect

Sopra Banking Software · Noida, India

Lending & Leasing Banking Platform — High-Throughput Batch Processing

• Engineered Spring Batch workflows to process thousands of transactions daily, reducing processing time by 25%
• Mentored a team of developers, providing technical guidance and code reviews, increasing productivity by 20%
• Conducted code and quality reviews using Checkmarx and SonarQube, ensuring 100% security compliance
• Authored technical design documents, reducing design phase time by 15%
• Implemented Apache Kafka for real-time event streaming with external systems

Ingenuity Gaming · Noida, India

Casino Games & Remote Gaming Service — Online Slot & Table Game Backends

• Developed RESTful APIs with Spring Boot for high-availability gaming services
• Integrated Apache Kafka for real-time event processing and game state management
• Collaborated on technical design to deliver 3+ games on schedule
• Conducted code reviews to enhance code maintainability

Crux Infotech · Delhi, India

Online Food Chain Management System — Order Processing & Inventory Backend

• Developed backend services using Java Servlets and JSP
• Implemented and optimized MySQL database schemas
• Integrated JavaScript and HTML for dynamic front-end components
• Utilized Maven for build automation