<p>Robert Half is seeking a <strong>Senior COBOL Mainframe Developer </strong>with AWS experience to support an established insurance and financial services organization. This role focuses on building APIs and integration layers to expose data from legacy mainframe systems, while supporting ongoing maintenance (KTLO) and new capability development. </p><p><br></p><p>If you feel this aligns with your background, apply today!</p><p><br></p><p>Schedule: Core availability 9:00 AM – 3:00 PM PST</p><p>Duration: 6-month contract, likely to extend or convert</p><p>Location: 100% Remote</p><p><br></p><p><em>Candidates must be authorized to work in the U.S. without the need for sponsorship.</em></p><p><br></p><p><strong>Job Duties:</strong></p><ul><li>Develop, enhance, and maintain IBM mainframe applications supporting legacy insurance and retirement systems</li><li>Build and support APIs and integration layers to expose mainframe data and functionality to downstream platforms</li><li>Maintain and enhance COBOL-based systems, including batch processing and online transactions</li><li>Support KTLO (Keep the Lights On) work, production stability, and ongoing system maintenance</li><li>Design and implement AWS-based solutions as needed to support integrations and platform capabilities</li><li>Participate in technical design discussions to ensure system reliability, scalability, and long-term stability</li><li>Contribute to new capability development on top of existing legacy systems (not net-new policy platforms)</li></ul>