Mainframe Systems Analyst / Interface & Documentation Specialist

CTG; United States; Remote; USD 110,000 - 140,000; Full time

Job summary

CTG seeks a Remote Mainframe Systems Analyst / Interface & Documentation Specialist to analyze complex mainframe interfaces, map data flows, and document end-to-end processing across multiple applications. The role focuses on Systematics interfaces (RM/IM/IT/GN/ALS/AIS) and core mainframe tech (COBOL, CICS, DB2, JCL, VSAM, copybooks, batch/file layouts).

You will develop and validate source-to-target mappings, assemble interface inventories, and produce reusable technical docs and process

Qualifications

• Experience with Systematics interfaces and data flows across RM, IM, IT, GN, and ALS/AIS.
• Strong knowledge of COBOL, CICS, DB2, JCL, VSAM, copybooks, and mainframe file layouts.
• Proficient in analyzing mainframe interfaces, data integration, batch processing, and application dependencies.
• Skilled in source-to-target data mapping, data-flow analysis, and technical documentation.
• Experience gathering and documenting Business Requirements and Functional Requirements for mainframe apps.

Responsibilities

• Analyze complex mainframe interfaces, data flows, batch processes, and system dependencies across multiple applications.
• Analyze and document Systematics interfaces and data flows across RM, IM, IT, GN, and ALS/AIS.
• Develop and validate source-to-target data mappings, including file layouts, element IDs, offsets, lengths, and transformations.
• Create and maintain interface inventories with file layouts, processing schedules, dependencies, owners, and SMEs.
• Trace files, batch jobs, reports, interfaces, and processing flows to validate data movement and investigate discrepancies.
• Develop data-flow diagrams, process diagrams, traceability docs, interface specifications, and technical process summaries.
• Gather, analyze, and document Business Requirements and Functional Requirements with owners and technical teams.
• Review existing docs, identify gaps, and validate findings with stakeholders.
• Document unresolved questions, assumptions, and dependencies while clarifying incomplete data.
• Create reusable technical documentation including mappings, requirements, processes, PBIs, and artifacts.

Skills

Systematics interfaces

RM interfaces

IM interfaces

IT interfaces

GN interfaces

ALS/AIS interfaces

COBOL

CICS

DB2

JCL

VSAM

Copybooks

Mainframe file layouts

Data-flow analysis

Technical documentation

Requirements gathering

Job description

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

Location: Remote

Duration: 12 months

Employment Type: W2 contract

Duties

• Analyze complex mainframe interfaces, data flows, batch processes, and system dependencies across multiple applications.
• Analyze and document Systematics interfaces and data flows, including RM, IM, IT, GN, and ALS/AIS.
• 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, interfaces, 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.
• Gather, analyze, and document Business Requirements and Functional Requirements in collaboration with business owners, SMEs, and technical teams.
• 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, requirements, 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

• Required experience with Systematics, including interfaces and data flows associated with RM, IM, IT, GN, and ALS/AIS.
• Strong hands-on knowledge of COBOL, CICS, DB2, JCL, VSAM, copybooks, and mainframe file layouts.
• 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.
• Experience documenting Business Requirements and Functional Requirements.
• 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, validate requirements, and address documentation gaps.

Experience

• Demonstrated experience analyzing complex mainframe applications, interfaces, and end-to-end data flows.
• Hands-on experience with Systematics applications and interfaces, particularly RM, IM, IT, GN, and ALS/AIS.
• Hands-on experience tracing batch jobs, files, reports, interfaces, and dependencies across multiple systems.
• Experience validating file-level source-to-target mappings, including data elements, offsets, lengths, and transformations.
• Experience gathering and documenting Business Requirements and Functional Requirements for mainframe applications and interfaces.
• Proven ability to create accurate technical diagrams, interface inventories, process documentation, requirements 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.