[Remote] Mainframe Systems Analyst / Interface & Documentation Specialist

Note: The job is a remote job and is open to candidates in USA. CTG is recruiting for an unnamed client seeking a Mainframe Systems Analyst / Interface & Documentation Specialist. The role analyzes mainframe interfaces and data flows, validates mappings, and creates and maintains technical documentation in collaboration with stakeholders.

Responsibilities

• 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• Document unresolved questions, assumptions, and dependencies while working with stakeholders to clarify incomplete or outdated information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
• 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
• Bachelor's degree in Computer Science, Information Systems, or a related field
• Equivalent relevant technical experience
• Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required
• Preferred

Benefits

• Remote work

Company Overview

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