Mainframe Systems Analyst / Interface & Documentation Specialist

CTG is seeking to fill a Mainframe Systems Analyst / Interface & Documentation Specialist position for our client.

Location: Remote
Duration: 12 months

Duties:

• Analyze complex mainframe interfaces, data flows, batch processes, and system dependencies across multiple applications.

• Develop and independently validate source-to-target data mappings, including file layouts, element IDs, offsets, lengths, and data transformations.

• Create and maintain interface inventories documenting file and record layouts, processing schedules, application dependencies, system owners, and subject matter experts (SMEs).

• Trace files, batch jobs, reports, and processing flows across systems to validate data movement and investigate discrepancies.

• Develop data-flow diagrams, process diagrams, batch/job/file traceability documentation, interface specifications, and technical process summaries.

• Review existing documentation, identify gaps or inconsistencies, and validate findings with business owners, SMEs, and technical teams.

• Document unresolved questions, assumptions, and dependencies while working with stakeholders to clarify incomplete or outdated information.

• Create and maintain reusable technical documentation, including source-to-target mappings, process documentation, PBIs, and supporting artifacts.

• Incorporate review feedback, maintain version-controlled deliverables, and conduct documentation walkthroughs to ensure established acceptance criteria are met.

Skills:

• Strong hands-on knowledge of COBOL, CICS, DB2, JCL, VSAM, copybooks, and mainframe file layouts.

• Experience with Systematics RM, Systematics IM, Systematics IT, Systematics GN, and Systematics AIS.

• Strong understanding of mainframe interfaces, data integration, batch processing, and application dependencies.

• Proficiency in source-to-target data mapping, data-flow analysis, and technical documentation.

• Excellent analytical, troubleshooting, and problem-solving skills, with exceptional attention to detail.

• Ability to independently trace and validate technical information rather than relying solely on existing documentation.

• Strong written and verbal communication skills, including the ability to translate complex technical concepts for technical and business audiences.

• Ability to collaborate with system owners and SMEs to resolve questions and address documentation gaps.

Experience:

• Demonstrated experience analyzing complex mainframe applications, interfaces, and end-to-end data flows.

• Hands-on experience tracing batch jobs, files, reports, and dependencies across multiple systems.

• Experience validating file-level source-to-target mappings, including data elements, offsets, lengths, and transformations.

• Proven ability to create accurate technical diagrams, interface inventories, process documentation, and reusable technical artifacts.

• Experience investigating legacy systems, identifying inconsistencies, and validating undocumented or outdated processes.

• Ability to work independently, manage detailed documentation deliverables, incorporate review feedback, and collaborate effectively with cross-functional stakeholders.

Education:

• Bachelor's degree in Computer Science, Information Systems, or a related field preferred, or equivalent relevant technical experience.

Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required.

CTG does not accept unsolicited resumes from headhunters, recruitment agencies, or fee based recruitment services for this role.

To Apply:

To be considered, please apply directly to this requisition using the link provided. Kindly forward this to any other interested parties. Thank you!

The expected base salary for this position ranges from $69.00 to $74.00/hour. Salary offers are based on a wide range of factors including relevant skills, training, experience, education, market factors, and where applicable, licensure or certifications obtained. In addition to salary, a competitive benefit package is also offered.