Senior Mainframe Developer / COBOL Senior Consultant

Amtex Enterprises Inc; Trenton (NJ); On-site; USD 83,000 - 110,000; Full time

Job summary

Amtex Enterprises Inc seeks a Senior Mainframe Developer / COBOL Senior Consultant for an onsite assignment in Trenton, NJ. The contract runs 5+ months and offers competitive hourly rates ($60-70/hr W2, $70-80/hr C2C/1099).

You'll work on legacy mainframe applications, COBOL, NATURAL, ADABAS, JCL, and contribute to design, development, maintenance, and testing, coordinating with ITS teams to deliver reliable batch and online processing.

Qualifications

• Advanced COBOL programming in enterprise mainframe environments.
• Strong JCL development and job scheduling experience.
• Extensive NATURAL programming experience.
• Knowledge of ADABAS database architecture and files.
• Experience maintaining large legacy mainframe codebases.
• Proven debugging and troubleshooting for batch and online apps.
• Ability to work with multiple technical teams and document work.
• Experience with system integration and data interfaces.

Responsibilities

• Participate in development efforts supporting legacy mainframe applications.
• Analyze existing legacy systems and provide code walkthroughs, logic analysis, and technical documentation.
• Design, develop, modify, test, and maintain COBOL and NATURAL programs and related JCL jobs.
• Perform ongoing maintenance and enhancements to batch and online mainframe applications.
• Troubleshoot production issues, job failures, and system abends with root cause analysis.
• Produce and maintain technical documentation including program specs and data definitions.
• Support system testing, integration testing, and UAT.
• Assist with performance tuning and optimization of batch jobs and database access.

Skills

COBOL

JCL

NATURAL

ADABAS

Mainframe

Batch/Online processing

Job description

Job Title : Senior Mainframe Developer / COBOL Senior Consultant
Location: Onsite in Trenton, NJ 08608
Duration: 5+ Months
Rate: $60-70/hr on W2 or $70-80/hr on C2C or 1099- MAX

Local Candidates only. Candidates should have strong background in Cobol, ADABAS, and Natural. strong in JCL as well.

Job Description: 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 contract role and is onsite in Trenton, NJ.

What You’ll Do

• 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

What You’ll Need

Required:

• 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:

• 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