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# Senior Applications Support Engineer in Kansas City

- **Company:** Energy Jobline
- **Location:** Kansas City, MO, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Software Bug Management, Software as a Service, COBOL (Programming Language), Software Debugging, Log Analysis, Regression Testing, Standard Sql, Web Services, Spring-boot, Enterprise Integration, Codebase, Legacy Systems
- **Published:** October 11, 2026
- **Apply:** https://www.energyjobline.com/job/senior-applications-support-engineer-kansas-city-31917887

## About the Role

* Java/Spring Proficiency: 3+ years of Java/Spring Boot experience. Your strength should be in navigating, debugging, and patching existing codebases, rather than development.
 * Integration Troubleshooting: Experience debugging, web services, and file-transfer processes. You should be adept at determining whether an issue lies within a SaaS vendor's platform, our integration layer, or legacy systems., * Specialized Systems: Experience with Java batch (JBeret), IBM App Connect (ACE), or file-transfer software (e.g., Cleo Harmony).

## Description

The client is moving towards running their Retail operations on top-tier SaaS and enterprise products. They are currently midway through a significant technology modernization, transitioning from legacy COBOL-based systems to a modern, integrated environment. As a Senior Application Support Engineer, you are a critical technical anchor for this hybrid ecosystem. This is a support-centric role where your primary mission is to ensure operational continuity. You will act as a functional lead for high-priority production incidents, maintaining the health of our evolving environment and using your Java expertise to fix, patch, and optimize the custom integrations that keep our systems running., * SaaS Ecosystem Maintenance: You will monitor the health of our integrated SaaS platforms, manage vendor-related issues, and ensure that our custom integration layers remain stable and secure.

 * Java Patching & Enhancement: When our vendor products or modernization efforts require customization or integration fixes, you will jump into the code. Deliver high-quality Java/MFT patches, bug fixes, and maintenance enhancements.
 * System Stability & Reliability: Proactively identify recurring pain points and performance bottlenecks. Use your SQL skills to analyze logs, optimize queries, and automate routine support tasks to prevent future system downtime.
 * Technical Stewardship: Review peer changes with a focus on safe deployment and regression testing. You are responsible for ensuring that all support activities maintain the integrity of our production environment.