Sr. Mainframe Developer/COBOL Consultant

Apollo Technology Solutions LLC

Trenton, NJ

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JOB DETAILS

SKILLS

Acceptance Testing, Adabas, Analysis Skills, Best Practices, Career Development, Change Management, Cobol Programming Language, Code Reviews, Coding Standards, Communication Skills, Computer Security, Consulting, Corrective Action, Data Migration, Database Analysis, Database Architecture, Debugging Skills, Debugging Tools, Documentation, Government, IBM CICS (Customer Information Control System), Identify Issues, Information Technology & Information Systems, Integration Testing, JCL (Job Control Language), Mainframe Computer, Performance Tuning/Optimization, Problem Solving Skills, Production Support, Root Cause Analysis, Software Administration, Software Development, Source Code/Configuration Management (SCM), System Architecture, System Integration (SI), System Test, Systems Analysis, Technical Writing, Technical/Engineering Design, Testing, Transaction Processing/Management

LOCATION

Trenton, NJ

POSTED

6 days ago

Title: Sr. Mainframe Developer/COBOL Consultant
Location: Trenton, NJ
Duration: Long term

Job Description:

Participate in development efforts supporting the project involving multiple legacy mainframe applications
Analyze existing legacy systems and provide code walkthroughs, logic analysis, and technical documentation to ITS development teams
Design, develop, modify, test, and maintain COBOL and NATURAL programs, along with associated JCL jobs, based on functional specifications and enhancement requests
Perform ongoing maintenance and enhancements to batch and online mainframe applications
Troubleshoot and resolve production issues, job failures, and system abends, including root cause analysis and corrective actions
Analyze ADABAS database structures, files, and access methods to support application development and system integration
Develop and maintain data feeds, file layouts, and interface processes between legacy systems and modernized ITS components
Participate in system design reviews, technical planning sessions, and code reviews
Produce and maintain technical documentation, including program specifications, data definitions, job flows, and system architecture documentation
Support system testing, integration testing, and user acceptance testing UAT
Implement best practices for mainframe development, including coding standards, version control, and change management
Assist with performance tuning and optimization of batch jobs, database access, and program execution
Provide production support for missioncritical applications and collaborate closely with analysts, architects, and development teams

Required Skills:

Advanced experience with COBOL programming in enterprise mainframe environments
Strong expertise in JCL development and job scheduling
Extensive experience with NATURAL programming
Working knowledge of ADABAS database architecture and file structures
Experience analyzing and maintaining large legacy mainframe codebases
Strong troubleshooting and debugging skills for batch and online applications
Experience with system integration, data interfaces, and file transfer processes
Proficiency with mainframe utilities, debugging tools, and job monitoring tools
Strong documentation and communication skills
Ability to work independently while coordinating with multiple technical teams

Preferred Skills:

Experience supporting taxation or government revenue systems
Familiarity with CICS and online transaction processing environments
Experience with data migration or modernization projects involving legacy mainframe applications
Knowledge of mainframe security, scheduling systems, and source code management tools
Experience working within largescale enterprise or government IT environments

Sr. Mainframe Developer/COBOL Consultant

Apollo Technology Solutions LLC

Trenton, NJ

About the Company

Apollo Technology Solutions LLC

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