Mainframe Developer

Senior Mainframe DeveloperHartford, CT - OnsiteMust Have Skills:⦁ 5+ years of experience in IBM z/OS application development (multiple client engagements).⦁ Hands-on experience with z/OS Connect Enterprise Edition.⦁ Proven experience with:o Inbound APIs: Cloud → z/OS Connect → CICS and/or IMSo Outbound APIs: CICS → Cloud-based REST APIs⦁ Strong knowledge of CICS TS and/or IMS TM environments.⦁ Experience working with COBOL (or PL/I) backend programs.⦁ Solid understanding of RESTful API design, HTTP methods, JSON, and Open API.⦁ Familiarity with security concepts such as OAuth 2.0, TLS, and API authentication.Nice to Have Skills:⦁ Experience with API management platforms (e.g., IBM API Connect).⦁ Knowledge of MQ, DB2, and VSAM data access patterns.⦁ Familiarity with Changeman⦁ Experience integrating mainframe workloads with public cloud platforms (AWS, Azure, or GCP).⦁ Understanding of z/OS system concepts, including SMF, ACF2, and workload management.⦁ z/OS Connect Enterprise Edition server configuration specifically server.xml.Detailed Job Description:We are seeking an experienced z/OS Connect Applications Developer to design, develop, and support API-based integrations between IBM Z platforms and cloud systems. This role focuses on both outbound integrations (CICS → Cloud APIs) and inbound integrations (Cloud APIs → z/OS Connect endpoints) connecting to CICS and/or IMS transaction processing environments.The ideal candidate has strong mainframe application experience, hands-on knowledge of z/OS Connect EE, and a solid understanding of modern RESTful API design and cloud integration patterns.Key ResponsibilitiesAPI Design & Development⦁ Design, build, and maintain RESTful APIs using z/OS Connect Enterprise Edition (EE).⦁ Develop inbound APIs exposing CICS and/or IMS transactions via z/OS Connect endpoints.⦁ Develop outbound API integrations enabling CICS applications to securely invoke cloud-based REST APIs.⦁ Define and maintain API contracts using Open API / Swagger specifications.Mainframe Integration⦁ Integrate z/OS Connect with CICS Transaction Server and/or IMS TM applications.⦁ Configure and manage service archives (SAR), z/OS Connect services, and related artifacts.⦁ Work with COBOL, PL/I, or assembler-based backend programs to support API enablement.Security & Governance⦁ Implement authentication and authorization using OAuth 2.0, JWT, TLS, and certificates.⦁ Ensure APIs conform to enterprise security, data protection, and compliance standards.⦁ Collaborate with platform and security teams to support API lifecycle management and governance.Operations & Support⦁ Troubleshoot and resolve API integration, performance, and connectivity issues.⦁ Monitor API usage and performance using z/OS Connect logs and enterprise monitoring tools.⦁ Support deployment automation and CI/CD pipelines for z/OS Connect and related components.Collaboration⦁ Work closely with cloud, distributed systems, and application teams to design end-to-end solutions.⦁ Participate in architecture reviews, code reviews, and design discussions.⦁ Create and maintain technical documentation and integration runbooks.Technical RecruiterVMC Soft Technologies inc.EMail: recruiterbang@vmcsofttech.comPh No: : 480-750-7071 Ext: 241