Mainframe Developer

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Location: Hartford, CT

About the Role

We are seeking an experienced Senior Mainframe SME to lead the mainframe code analysis and reverse engineering phase of large-scale modernization and transformation programs. The candidate will provide deep technical expertise across IBM Mainframe technologies, collaborate with customer and internal stakeholders, and drive the successful assessment, understanding, and documentation of legacy applications.

Responsibilities

• Program Leadership & Governance
  • Lead the overall code analysis and reverse engineering workstream for mainframe modernization programs.
  • Define analysis strategies, deliverables, timelines, and governance processes.
  • Provide technical leadership to architects, analysts, and development teams.
  • Review project progress, risks, dependencies, and mitigation plans.
  • Ensure quality and completeness of application discovery and documentation.
• Mainframe Code Analysis & Reverse Engineering
  • Analyze and reverse engineer complex legacy applications to identify business processes, application functionality, and technical dependencies.
  • Perform application inventory and portfolio assessment.
  • Identify program-to-program, batch, online, database, and external interface dependencies.
  • Derive business rules and functional workflows from legacy code.
  • Create application architecture diagrams, data flow diagrams, and system documentation.
  • Support automated and manual code discovery activities.
• Technical Expertise
  • Provide SME guidance on IBM Mainframe technologies including: COBOL, JCL, CICS, DB2, IMS DB/DC, VSAM, MQ Series, REXX, Easytrieve, CA7/Control-M Schedulers, Endevor/Changeman.
  • Evaluate modernization, remediation, and migration approaches.
  • Support application decomposition and target-state architecture discussions.
• Stakeholder Collaboration
  • Work closely with customer SMEs, business users, architects, and modernization teams.
  • Conduct technical workshops, requirement discussions, and knowledge transfer sessions.
  • Present findings, recommendations, and analysis reports to leadership stakeholders.
  • Act as the primary technical escalation point for mainframe-related issues.
• Documentation & Reporting
  • Produce detailed analysis reports, dependency matrices, and application assessments.
  • Document business processes, application architecture, interfaces, and data models.
  • Prepare executive summaries and modernization recommendations.
  • Maintain traceability between business functions and legacy code components.

Requirements

• 12+ years of Mainframe Application Development, Modernization, Reverse Engineering, and Legacy System Analysis.
• Strong expertise in IBM Mainframe technologies.
• Extensive experience in COBOL, JCL, CICS, DB2, IMS, and VSAM.
• Deep understanding of batch and online processing environments.
• Experience with code analysis, reverse engineering, and application discovery tools.
• Strong knowledge of software development lifecycle (SDLC) and application modernization methodologies.
• Experience in legacy application assessment and transformation programs.

Pay

The base compensation range for this role in the posted location is $120,000 to $155,800. Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The actual compensation offered may fall outside of the posted range and will be determined based on factors such as geographic location, education and qualifications, certifications and licenses, relevant experience and skills, seniority and performance, market and business considerations, and internal pay equity.

Benefits

Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees. In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:

• Paid Time Off
  • Vacation: 12-25 days, depending on grade
  • Company paid holidays
  • Personal Days
  • Sick Leave
• Medical, dental, and vision coverage (or provincial healthcare coordination in Canada)
• Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)
• Life and disability insurance
• Employee assistance programs
• Other benefits as provided by local policy and eligibility