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Gregory Trunk

@gregorytrunk

Senior Software Developer at Oracle who modernized a WMS monolith into microservices supporting 5M+ daily transactions.

At Oracle, I modernized a legacy WMS monolith into modular microservices and REST APIs for WMS, ERP, and OMS integrations. The platform supports 5M+ daily transactions, and the changes reduced deployment time by 70%.

Previously, I developed Java services at Bank of America and IBM, including event-driven transaction flows and enterprise applications. I’ve also mentored engineers and worked on reliability, testing, and production troubleshooting for mission-critical systems.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Developer

Current

Oracle

Aug 2023 - Present (3 years 3 months)

Architected a cloud-native microservices platform using Java 17, Spring Boot 3, and Kubernetes, supporting 5M+ daily transactions with 99.99% availability. Modernized a legacy WMS monolith into microservices and REST APIs, reducing deployment time by 70% and improving order throughput.

Java 17 Spring Boot 3 Spring Cloud Kafka Kubernetes AKS React TypeScript Redis PostgreSQL GitHub Actions Docker Helm CI CD Contract Testing SLA Management

Senior Java Developer

Bank of America

Mar 2020 - Aug 2023 (3 years 5 months)

Engineered high-throughput backend services using Java 11, Spring Boot 2, and SQL Server, processing millions of secure transactions daily. Refactored monoliths into microservices with Kafka, improving throughput by 45% and enhancing fault isolation.

Java 11 Spring Boot 2.7 Hibernate SQL Server Kafka Spring Security OAuth JWT Websphere IBM MQ Drools Docker Kubernetes Azure DevOps

Software Developer

IBM

May 2015 - Mar 2020 (4 years 10 months)

Developed scalable web applications with Java 8, Spring MVC, and RESTful APIs for enterprise operations. Contributed to migration plans from monoliths to microservices and containerized applications with Docker and Kubernetes.