• Back End Java Developer

    Robert Half Technology (Madison, WI)


    Description

    We are looking for two Back-End Java Developers to support a critical system modernization effort. The overall architecture has been built out, and now it’s time to bring in skilled developers to execute. This is a long-term contract role ideal for developers who thrive in heads-down coding environments and like working on tangible outcomes. You’ll be working directly with the Engineering Lead on decomposing legacy systems, building new microservices, and streamlining data processes.

    Project Scope:

    + Modernizing how Client Information IDs (CIF IDs) are managed and used across multiple systems

    + Current architecture leverages CIF IDs across 12+ applications, but these will be deprecated by end of 2025

    + New system will assign separate IDs for teams like Sales, Marketing, etc., with all records centralized in the EKM (Enterprise Knowledge Management system)

    + This is a cleanup and automation-heavy project — old systems must be decomposed, new IDs integrated, and data flows automated

    Day-to-Day Responsibilities:

    + Develop and maintain Spring Boot microservices as part of the ID migration and automation process

    + Integrate new system identifiers into multiple internal applications

    + Replace and decommission existing logic tied to legacy CIF IDs

    + Create and optimize API endpoints to support cross-functional data operations

    + Work closely with the Engineering Lead to interpret technical requirements and turn them into production-ready code

    + Participate in unit testing, code reviews, and production deployment processes

    + Debug and resolve back-end performance or integration issues as they arise

    Requirements

    Must-Have Skills:

    + 5–10 years of Java development experience, focused on back-end systems

    + Strong expertise in Spring Boot – this is critical

    + Familiarity with service-based architecture and distributed systems

    + Experience in system integration, data mapping, and refactoring legacy code

    + Ability to work independently – you’ll need to gather requirements from the engineering lead and take ownership of execution

    + Experience automating backend processes and data migration

    Qualifying Questions:

    + Can you describe a recent project where you had to pick up requirements from a tech lead and independently deliver the solution?

    + What’s your experience using Spring Boot to build or refactor microservices?

    + Have you worked on system modernization efforts or decommissioning legacy components in the past?

    + How do you approach identifying downstream impacts when refactoring shared service code?

    Nice to Have:

    + Familiarity with ID/data management in enterprise environments

    + Knowledge of EKM or similar centralized knowledge/data stores

    + Experience working in environments with marketing/sales integration platforms

     

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