Mainframe Systems Professional

7 days ago

dombivli, India beBeeDeveloper Full time

Job Title:Key Responsibilities:Develop, enhance and maintain applications on IBM z/OS using Assembler, C, JCL, REXX and related technologies.Participate in the full software development life cycle: requirements analysis, design, coding, testing and production support.Optimize system performance, troubleshoot defects and ensure system reliability.Collaborate with cross-functional teams (System Engineers, Quality Assurance, DevOps, Business Stakeholders).Maintain technical documentation, coding standards and operational procedures.Support legacy systems while contributing to modernization efforts.Required Skills and Qualifications:5+ years of programming experience in Assembler / HLASM (on z/OS) and C (on z/OS).Comprehensive expertise in IBM subsystems and z/OS internals: cross-memory services, SRB management, Program Call routines, interlanguage communication (Assembler, Java, C, REXX).Extensive experience in APF-authorized code development and secure, high-performance system-level modules.Expert-level proficiency in HLASM and z/OS system macros for program management, storage, synchronization, recovery and messaging.Skilled in subsystem interfaces and exits integrating with Job Entry Subsystem (JES), System Management Facilities (SMF) and core components.Advanced debugging using Extended Diagnostics Control (XDC), Interactive Problem Control System (IPCS) and dump analysis for complex system issues.Familiarity with Sysplex communication using XCF macros.Experience with Agile/Scrum methodologies for mission-critical software delivery.Preferred Skills:Knowledge of Zowe, z/OSMF, RESTful APIs and modernization/integration projects.Strong Java development skills (JZOS, JNI, batch-mode applications).Familiarity with ICSF, Resource Access Control Facility (RACF), Software Maintenance Program/Enterprise (SMP/E) packaging and Security Content Automation Protocol (SCAP) compliance.Education:Bachelor's degree in computer science, software engineering, information technology or equivalent experience.

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