Mainframe Systems Analyst / Interface & Documentation Specialist

Computer Task Group, Inc•UNAVAILABLE, UNAVAILABLE

15d•Remote

About The Position

CTG is hiring a Mainframe Systems Analyst / Interface & Documentation Specialist for a client. This remote position is for a 12-month duration. The role focuses on analyzing complex mainframe interfaces, data flows, batch processes, and dependencies across applications, then independently validating and documenting how data moves between systems. The specialist will produce and maintain source-to-target mappings, interface inventories, diagrams, interface specifications, process documentation, and other reusable technical artifacts. The work includes tracing files, batch jobs, reports, and processing flows; investigating discrepancies and documentation gaps; and confirming findings with business owners, subject matter experts, and technical teams. The specialist will document unresolved questions, assumptions, and dependencies, incorporate review feedback, maintain version-controlled deliverables, and conduct walkthroughs to confirm acceptance criteria are met. A bachelor's degree in Computer Science, Information Systems, or a related field is preferred, or equivalent relevant technical experience. Strong written and verbal English communication skills and the ability to interact professionally with a diverse group are required. The expected base salary is $69.00 to $74.00 per hour. A competitive benefits package is also offered.

Requirements

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

Nice To Haves

Bachelor's degree in Computer Science, Information Systems, or a related field.

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