Java Upgrade Engineer: Modernize Enterprise Apps

Compunnel, Inc.; Des Moines (IA); On-site; USD 80,000 - 110,000; Full time

Job summary

A technology solutions provider based in Iowa is seeking a Java Developer to support the upgrade of applications from Java 8 to Java 18. The ideal candidate will have 3–5 years of Java development experience and strong knowledge of Spring / Spring Boot. Responsibilities include ensuring applications remain stable and secure during the upgrade process and collaborating with QA and DevOps teams. This role offers a challenging opportunity to work on modernizing enterprise applications.

Qualifications

• 3–5+ years of professional Java development experience.
• Strong knowledge of Java 8 and familiarity with versions 11, 17, or 18.
• Experience with Spring / Spring Boot.

Responsibilities

• Upgrade existing applications and services from Java 8 to Java 18.
• Update code, frameworks, and libraries for compatibility.
• Troubleshoot compile-time and runtime issues during upgrades.

Skills

Java development

Spring / Spring Boot

Debugging

Problem-solving

Unit testing

Version control with Git

Tools

Maven

Gradle

CI/CD pipelines

Job description

A technology solutions provider based in Iowa is seeking a Java Developer to support the upgrade of applications from Java 8 to Java 18. The ideal candidate will have 3–5 years of Java development experience and strong knowledge of Spring / Spring Boot. Responsibilities include ensuring applications remain stable and secure during the upgrade process and collaborating with QA and DevOps teams. This role offers a challenging opportunity to work on modernizing enterprise applications.