Senior Mainframe Engineer

Client is seeking a highly skilled Sr. Mainframe Engineer to join the R4 Responsive Security Master team within Brokerage Recordkeeping Technology. This role supports mission-critical reference data and pricing systems that serve millions of customers. The engineer will work in a hybrid environment, maintaining and enhancing high-volume production platforms across both mainframe and distributed systems. The role emphasizes production stability, incident remediation, application enhancements, and continuous improvement.

• Design, develop, maintain, and support large-scale mainframe applications in a high-availability production environment
• Provide senior-level production support, including incident investigation, root cause analysis, and remediation
• Perform application enhancements and system optimizations to improve performance, reliability, and scalability
• Integrate mainframe applications with distributed systems and cloud-based services
• Deploy and support software releases across environments following SDLC and change management processes
• Execute component-level testing and support end-to-end testing efforts
• Apply best practices in software lifecycle management, coding standards, and design patterns
• Collaborate closely with business partners, architects, and cross-functional engineering teams
• Participate in continuous improvement initiatives and modernization efforts
• Ensure system reliability, data integrity, and compliance with enterprise standards

• Bachelor’s degree in Computer Science or a related field, or equivalent professional experience
• Strong hands-on experience in mainframe development and support

• COBOL
• CICS
• VSAM
• JCL
• Mainframe utilities, File Aid, Endevor, schedulers, and debugging tools
• Extensive experience with DB2 and strong command of SQL
• Solid understanding of testing methodologies and production release processes
• Proven ability to troubleshoot complex systems in a fast-paced production environment

• Mainframe Technologies: COBOL, CICS, VSAM, JCL
• Databases: DB2, Oracle, SQL
• Cloud / Distributed: AWS (support experience preferred)

• Experience with distributed systems and cloud computing
• Working knowledge of Java
• Relevant certifications in mainframe or distributed technologies

• Strong analytical and problem-solving skills
• Excellent verbal and written communication abilities
• Ability to collaborate effectively across technical and business teams
• Comfortable implementing complex solutions in a dynamic, high-volume environment