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Sr. Java Developer (COBOL to Java Modernization) Columbus, OH (

Company:
United Software Group
Location:
North Linden, OH, 43224
Posted:
November 09, 2026
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Description:

Sr. Java Developer (COBOL to Java Modernization) Columbus, OH (Onsite)

Location: William Green Building, 8th Floor, 30 West Spring Street, Columbus, OH (onsite)

Contract: Through 06/30/2027

Interview: Onsite

About the Role

OIC is looking for a senior Java developer to help understand legacy COBOL applications and redevelop them in Java. You'll serve as lead Java developer on the main assignment, work in an agile, iterative way with other developers and subject matter experts, and help OIC set and refine its coding standards. Strong performance may lead to additional code rewrite work.

What You'll Do

Act as Sr. Java developer, delivering Java solutions that replace the business-critical functions of the legacy COBOL applications

Design, code, test, and document Java application components

Work with OIC IT staff and subject matter experts to choose the best solution approach

Apply best practices and help establish and refine coding standards

Show regular, steady progress in an agile/iterative environment

Troubleshoot and fix bugs, and protect the security and integrity of the application

Write documentation (flowcharts, narratives, code comments) and train OIC IT staff

Coordinate programming activities across the team and resolve questions of intent, accuracy, or feasibility with business and technical personnel Required Qualifications (10+ years each)

Java solution development in a Windows environment

Java Persistence API (JPA)

SQL

RESTful web services

JUnit

Strong Java (8/11/17+) and object-oriented design, plus Spring, Spring Boot, and Hibernate

Microservices experience, plus relational databases (MySQL, Oracle, SQL Server)

Git and CI/CD tools (Jenkins, Maven, Gradle)

Ability to propose, document, and deliver software lifecycle solutions

Excellent written and verbal communication and leadership skills Highly Desired

Experience reading and understanding COBOL code

Angular 4+ or Blazor, and single-page application experience

AWS, Azure, or GCP, plus Docker and Kubernetes

Eclipse and Visual Studio Code

Bachelor's degree in Computer Science, Computer Engineering, IT, or a related field

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