Sr. Mainframe Application Developer

• Build, maintain, and support Teradata mainframe connectivity solutions and utilities
• Diagnose and resolve complex customer issues, including APAR development and SMP/E packaging and maintenance
• Analyze and synthesize customer mainframe environments to reproduce and troubleshoot issues in lab environments
• Profile system, network, and application performance using tools such as SDSF and SMF
• Collect, analyze, and debug system dumps using IPCS and related tools (e.g., XDC)
• Understand and work within mainframe security frameworks including RACF, Top Secret, and ACF2
• Develop and maintain JCL and REXX scripts for build automation, testing, and performance validation
• Read, understand, and maintain shared assembly code across multiple products
• Collaborate with cross-functional teams, including architects, product managers, and support engineers
• Contribute to and maintain a large-scale assembly-based codebase (TDP) requiring advanced debugging and system-level understanding
• Support integration with CICS and IMS transaction environments
• Assist in ensuring stability and backward compatibility as legacy systems are phased out

• 8-10 years of experience in IBM z/OS mainframe environments
• Hands-on experience with SMP/E, APAR creation, and maintenance workflows
• Proficiency in JCL and REXX scripting
• Experience with dump analysis and debugging tools such as IPCS
• Familiarity with performance monitoring tools (SMF, SDSF)
• Solid understanding of mainframe security models (RACF, Top Secret, ACF2)
• Ability to troubleshoot complex distributed and mainframe-integrated systems
• Strong analytical and problem-solving skills

• Experience with C and C++ is a strong plus
• Exposure to mainframe assembly language (ability to read and understand required
• deep expertise is a plus)
• Experience with CICS and IMS integration
• Familiarity with database connectivity systems or the Teradata ecosystem
• Experience working in hybrid environments involving mainframe and cloud systems

comprehensive benefits programs, which include healthcare, life and disability insurance plans, a 401(k)-retirement savings plan, and time-off programs