Senior Mainframe Developer ​/ COBOL Senior Consultant

Senior Mainframe Developer / COBOL Senior Consultant

Req number: R8294

Employment type:

Full time

Worksite flexibility:
Onsite

CAI is a global services firm with over 9,000 associates worldwide and a yearly revenue of $1.3 billion+. We have over 40 years of excellence in uniting talent and technology to power the possible for our clients, colleagues, and communities. As a privately held company, we have the freedom and focus to do what is right-whatever it takes. Our tailor‑made solutions create lasting results across the public and commercial sectors, and we are trailblazers in bringing neurodiversity to the enterprise.

We are looking for a motivated Senior Mainframe Developer / COBOL Senior Consultant ready to take us to the next level! If you have strong Cobol Development, good understanding of ADABAS and Natural, and are looking for your next career move.

We are looking for a Senior Mainframe Developer / COBOL Senior Consultant to evaluate existing systems and user needs in order to analyze, design, recommend, and implement information system changes. This position will be a full‑time contract role and is onsite in Trenton, NJ.

• 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 mission‑critical applications and collaborate closely with analysts, architects, and development teams

• 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

• 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 large‑scale enterprise or government IT environments

Ability to safely and successfully perform the essential job functions consistent with the ADA and other federal, state, and local standards

Sedentary work that involves sitting or remaining stationary most of the time with occasional need to move around the office to attend meetings

Ability to conduct repetitive tasks on a computer, utilizing a mouse, keyboard, and monitor

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If you require a reasonable accommodation in completing this application, interviewing, completing any pre‑employment testing, or otherwise participating in the employment selection process, please direct your inquiries to application.accommodations or (888) 824 - 8111.

It is the policy of Computer Aid, Inc.(CAI) not to discriminate against any employee or applicant for employment because of race, color, religion, sex, sexual orientation, gender identity, national origin, age, marital status, genetic information, disability or because he or she is a protected veteran. It is also the policy of CAI to take affirmative action to