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Danny Walsh

@dannywalsh

Full-Stack Developer at eSpatial building SaaS mapping features, including territory exports for maps with over 200K points.

Ireland

Message

At eSpatial Solutions Limited, I redesigned PDF territory exports as a Node service using Puppeteer and concurrent headless browsers. Exports now handle over 200 territories on a map with over 200K points, with fewer crashes and improved performance for large datasets.

At eSpatial, I also migrated mapping from Azure Maps to Mapbox, cutting API costs by 50%, and built Playwright automation scripts to move QA workflows away from Testim. Previously, at Ayvens and Fidelity Investments, I modernised Java applications, built REST services, and worked across database and front-end layers.

Experience

Work history, roles, and key accomplishments

Current

Full-Stack Developer

Current

eSpatial Solutions Limited

Jun 2025 - Present (1 year 5 months)

Owned feature delivery from Product Owners through QA handoff in a SaaS mapping environment, delivering production-ready changes independently. Redesigned PDF territory export using Node and Puppeteer, led migration from Azure Maps to Mapbox, and designed a scheduled route-by-email feature.

Java 21+Spring Framework React JavaScript Oracle Docker Podman Claude Code HTML CSS Linux Tomcat Node TypeScript Maven Gradle Git BASH IntelliJ IDEA Playwright PostgreSQL Puppeteer

Full-Stack Developer

Ayvens

Mar 2020 - May 2025 (5 years 2 months)

Maintained and modernised enterprise Java applications built on J2EE, Servlets, Struts, WebSphere, and JSP. Decoupled legacy backend processing, upgraded web services to Jakarta EE, and migrated front-end from AngularJS to React.

Java 8 Spring Framework J2EE REST JavaScript jQuery SOAP XML Servlet JSP Struts React Datadog Docker JSON AWS Ansible HTML CSS Maven Gradle Ant SVN Git JDBC Websphere Tomcat Log4j Microsoft SQL Server

Software Engineer

Fidelity Investments

Sep 2017 - Mar 2020 (2 years 6 months)

Worked as a full-stack developer across database, services, and front-end layers, building backend REST services for three independent front-end applications. Wrote unit and integration tests and taught introductory Python courses.

Java Spring Boot MyBatis JavaScript Angular2 TypeScript HTML CSS Junit Mockito

Associate Software Engineer

Fidelity Investments

Sep 2015 - Sep 2017 (2 years)

Joined a team in Dublin as a Database Developer, engineering stored procedures, packages, and database logic to support enterprise data pipelines. Gained experience with Liquibase and database schema change management.

Pl SQL SQL UTPLSQL Liquibase Informatica