API Integration Architect (Mainframe Modernization & Enterprise Integration)

• Define the overall API architecture and integration strategy for MACSS API enablement.

• Analyze existing MACSS interfaces, conversations, and services to:

• Identify reuse opportunities, Avoid duplication of functionality

Make architectural decisions on whether requirements should result in:

• Reuse of existing interfaces/services, Extension of existing APIs
• Development of new APIs

Define how extracted mainframe business logic is exposed through APIs in a clean and consistent way.

Provide architecture for handling embedded and tightly coupled business logic in legacy MACSS programs.

Define integration patterns for z/OS / COBOL systems, including transaction handling, session management, and data transformation.

Guide teams in structuring APIs to support existing use cases across multiple releases efficiently.

• Deep expertise in API architecture & design, and integration patterns.
• Strong experience with mainframe systems (z/OS / COBOL) and legacy integration.
• Proven ability to analyze existing interfaces/services and define reuse vs new build strategy.
• Interface Analysis & Reuse Strategy
• Hands-on experience in:
• • Analyzing existing interfaces/services, Building service inventory/catalog
• • Defining reuse vs new build decisions
• Ability to create reuse frameworks and API grouping strategies
• DevOps & Delivery

Preferred Skills and Experience

• Experience in utility, customer care, or billing systems.
• Exposure to MACSS or similar conversation-based mainframe systems.
• Experience with API gateways, middleware platforms, and enterprise integration tools