OS Connect API Engineer(C1/C2) OnshoreWork site: Columbus, US (Onsite) Start date: Immediate availability.The z/OS Connect API Engineer is responsible for modernizing mainframe services through API enablement using IBM z/OS Connect.
This role bridges traditional CICS/COBOL systems with modern API and cloud-native architectures while enabling secure, scalable, and reusable integration capabilities.Key Responsibilities:Develop REST APIs using IBM z/OS Connect.Expose CICS and DB2 transactions through modern API contracts.Build and maintain API service definitions, mappings, and YAML configurations.Develop OpenAPI specifications aligned with enterprise standards.Configure and support JWT, OAuth2, OIDC, RACF, and certificate-based authentication.Implement CI/CD deployment pipelines using GitHub Actions and Gradle.Support integration with APIM as the enterprise API gateway.Troubleshoot performance, security, and connectivity issues.Develop onboarding templates and reusable API accelerators.Participate in mainframe modernization initiatives and Shadow Service migration efforts.Required Skills:IBM z/OS Connect REST APIsOpenAPIJSON/XMLCICSCOBOLDB2RACFGitHub CI/CDPreferred Skills:APIMJava Spring BootOAuth2/OIDCMainframe modernization programsBM z/OS Connect