Mainframe Developer

Thoriva, an Infinite Company, is seeking a Senior Mainframe Application Developer to support the design, development, enhancement, and maintenance of enterprise mainframe systems supporting mission-critical business operations. This role involves hands-on development across both batch and online mainframe applications, as well as participation in testing, production support, and modernization initiatives.

The ideal candidate has deep experience with IBM z/OS environments, strong COBOL development skills, and a solid understanding of mainframe data stores and transaction processing systems., As Senior Mainframe Application Developer, you will bring IBM z/OS expertise to design, develop, and maintain enterprise-grade mainframe applications for mission-critical programs. You will collaborate with cross-functional teams and contribute to modernization efforts. Applying AI-enabled tools where applicable to accelerate delivery and documentation., * Design, develop, enhance, and maintain mainframe applications using COBOL.

• Develop and support batch and online programs (CICS).
• Write and maintain JCL, manage job scheduling, and support batch cycles.
• Develop and maintain integrations with DB2, VSAM, and other mainframe data sources.
• Perform unit testing, system testing, and UAT support.
• Troubleshoot production issues and provide production support.
• Participate in requirements analysis and translate business needs into technical solutions.
• Collaborate with cross-functional teams including analysts, testers, and infrastructure teams.
• Follow established SDLC, change management, and release processes.
• Support documentation, knowledge transfer, system modernization initiatives, and continuous improvement as applicable.

• 10+ years of hands-on mainframe application development experience (flexible for strong candidates).
• Strong proficiency in COBOL, JCL, DB2, and VSAM.
• Experience with CICS and/or IMS.
• Experience developing and supporting both batch and online applications.
• Familiarity with mainframe development and debugging tools, such as Expeditor, Intertest, Endeavor, or Changeman.
• Experience working in production support environments.
• Strong problem-solving, troubleshooting, and communication skills.
• Ability to work independently with minimal ramp up.
• Excellent communication skills (written and verbal)., * Financial services or other regulated industry experience.
• Strong testing background (functional, system, and UAT).
• Experience in Agile and/or Waterfall delivery environments.
• Exposure to modernization efforts or integration with web / distributed technologies.
• Experience using AI tools to support code generation, documentation, test case creation, testing acceleration, and developer productivity.
• Familiarity with AI-enabled and modernization tools such as Zowe, GitHub Copilot, and IBM Watsonx.
• Ability to obtain and maintain a U.S. citizen security clearance, if required for client or federal program support.

• Competitive base salary commensurate with experience and scope of the role
• Comprehensive benefits package including health, dental, vision, 401(k), and paid time off (PTO)
• Flexibility for remote work

Thoriva is an AI technology company delivering intelligent, data-driven solutions to transform government operations. We combine AI solutions, commercial expertise, and complex business logic to address government and federal agencies biggest challenges.