Uday durairaj

Architected and led the decomposition of a monolithic core banking platform at JPMorgan Chase into 45+ cloud-native microservices on AWS EKS using Java 17, Spring Boot 3, and Spring Cloud, improving release cycle time (quarterly to weekly) and availability (99.5% to 99.99%). Designed event-driven workflows using Apache Kafka, AWS MSK, and Spring Cloud Stream to process 5M+ daily financial transactions with sub-200ms p99 latency, applying SAGA, CQRS, and event sourcing for distributed transaction consistency across 12 bounded contexts. Built secure REST and GraphQL APIs with Spring Security, OAuth 2.0, OpenID Connect, JWT, and Resilience4j circuit breakers behind API Gateway, supporting 10K+ concurrent users with zero security incidents over 30 months. Led a globally distributed Agile/Scrum team of 12 engineers across the US and India; improved engineering practices and mentorship, including promotion of mid-level developers. Implemented CI/CD pipelines (Jenkins, GitHub Actions, Docker,

Built SOX- and FFIEC-compliant Java 11/Spring Boot microservices for mortgage origination, loan servicing, and securitization workflows at Freddie Mac on Azure Kubernetes Service (AKS), replacing a legacy WebLogic/EJB monolith to support $400B+ annual loan volumes. Developed REST APIs and MISMO-compliant data exchange APIs using contract-first design with Swagger/OpenAPI 3.0 consumed by seller/service counterparty systems and partner platforms, reducing seller onboarding time (6 weeks to under 2 weeks). Designed asynchronous loan eligibility and credit decisioning workflows using RabbitMQ, Spring AMQP, and Spring Integration, increasing throughput 4x versus legacy nightly batch and reducing loan underwriting turnaround time (48 hours to under 4 hours). Containerized 20+ services with Docker and Helm on AKS; built Azure DevOps CI/CD pipelines and decommissioned legacy infrastructure, eliminating ~$400K/year in WebLogic licensing. Hardened security across services using Spring Security,

Built Java 8/Spring Boot microservices for order management, inventory, dynamic pricing, and checkout workflows at Amazon Retail, supporting consumer-facing transaction volumes for tens of millions of active customers. Designed and developed REST APIs deployed on AWS (EC2, S3, RDS, Lambda, SQS, DynamoDB, CloudFormation), scaling seamlessly through Prime Day and holiday peaks with 300% headroom over baseline. Built reusable payment-processing integration components handling tokenization, fraud-check callouts, and multi-tenant support while maintaining 99.9% transaction success rate during Black Friday/Cyber Monday peak. Introduced Redis caching and Elasticsearch indexing patterns to reduce database load by 70% and bring product search response time from 1.2s to under 200ms. Led a team of 6 developers using Agile/Scrum, owning sprint planning, backlog grooming, code reviews, and retrospectives. Built Jenkins CI/CD pipelines with Maven, SonarQube, and Nexus to automate AWS build/deploy an