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Senior Java / Batch Modernization Developer

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Intertech (Minnesota)

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Location:
United States

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

75.00 - 100.00 USD / Hour ▼
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Job Description:

Our client is modernizing its legacy systems, replacing WebSphere dependent batch jobs, refactoring backend services, and migrating to a scalable service-based architecture built on Java, Spring, Open Liberty, and modern REST APIs. The Senior Back-End / Batch Modernization Developer will lead the migration and redesign of enterprise batch workloads and backend services, ensuring performance, reliability, and long-term maintainability.

Job Responsibility:

  • Batch System Modernization: Analyze existing WebSphere Batch jobs and migrate them to JBatch on Open Liberty, redesigning steps, flows, and batch lifecycle where needed
  • Back-End Architecture & API Development: Design and implement backend services using Java, Spring, and RESTful architectural principles
  • Performance, Optimization & Quality: Review and refactor SQL, batch logic, and backend execution to improve reliability and execution time
  • Modernization Leadership & Collaboration: Help mentor client developers new to modern Spring, JBatch, Open Liberty, or REST

Requirements:

  • Expert-level Java (21)
  • Spring / Spring Boot (DI, caching, batch integration, transactions)
  • REST API development and secure service-to-service communication
  • SQL optimization, database performance tuning, schema understanding
  • WebSphere Batch internals
  • Open Liberty + JBatch (Jakarta Batch) implementation
  • Job/step design, partitioning, chunking, retry/skip patterns
  • Refactoring for runtime efficiency and architectural alignment
  • Automated testing around batch flows
  • Git, CI/CD (Azure DevOps, Jenkins, etc.)
  • Maven/Gradle build systems
  • Logging frameworks, monitoring, profiling, and troubleshooting tools

Nice to have:

  • Experience modernizing legacy government or public sector batch systems
  • Understanding of the modernization context: eliminating WebSphere, building APIs, large-scale UI and backend overhaul
  • Prior work on distributed, high throughput, or high volume systems
  • Experience mentoring teams, conducting architectural reviews, or leading modernization workshops
  • Strong communication skills suitable for technical and non-technical audiences

Additional Information:

Job Posted:
May 04, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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