BO

Open to opportunities

Barry O'Riordan

@barryoriordan

I modernize high-throughput banking platforms with Java, AWS, and technical leadership.

What I'm looking for

I'm looking to lead complex Java and AWS cloud modernization work, building scalable financial-services platforms while guiding Agile engineering teams through high-quality delivery.

I've modernized high-throughput banking platforms for JPMorgan Chase, Deutsche Bank, and AIB, using Java, Spring Boot, AWS, and event-driven architecture.

At JPMorgan Chase, I built a Spring Boot migration tool that moved 2 million historical trade documents from Oracle DB to AWS S3, delivering sub-second retrieval times and lower storage costs. I also led the move from legacy Forms & Reports to a cloud-native React, AWS ECS, and Spring Boot REST API model.

As Technical Lead and Scrum Master for a 22-engineer Global Fund Services Transfer Agency team, I guided sprint planning, backlog refinement, and distributed delivery. I integrated Kafka for asynchronous trade-event streaming while maintaining zero data loss across cloud and on-premise systems.

Previously at Deutsche Bank and AIB, I delivered real-time trade-risk microservices, BDD automation that reduced regression cycles from days to hours, low-latency FX streaming, digital signature services, fraud-detection integrations, and standardized Jenkins and Maven delivery pipelines.

Experience

Work history, roles, and key accomplishments

JC

Senior Software Engineer & Technical Lead (AVP)

Apr 2022 - Apr 2025 (3 years)

Built a Java Spring Boot migration tool to transfer 2 million historical trade documents from on-premise Oracle DB to AWS S3, reducing retrieval latency and storage costs. Led modernization of legacy Forms & Reports to a cloud-native model with React UI on AWS ECS and Spring Boot REST APIs, and served as Technical Lead and Scrum Master for a 22-engineer team.

Java Spring Boot S3 AWS ECS React REST APIs Oracle Scrum Technical Leadership

Education

Degrees, certifications, and relevant coursework

TD

Trinity College Dublin

Bachelor of Science, Management Science and Information Systems Studies

Earned a Bachelor of Science in Management Science and Information Systems Studies from Trinity College Dublin.

Tech stack

Software and tools used professionally

Postman

Splunk

Jenkins

F5

DB

PostgreSQL

Spring Boot

IntelliJ IDEA

Jira

JavaScript

HTML5

Java

PHP

Kafka

Grafana

Spring Security

JUnit

JBehave

SQL

TeamCity

Arch

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