Expert Software Engineer Mainframe AMS

16 hours, 34 minutes ago
Full-time
Lead
Software Development
Ensono

Ensono

Ensono provides comprehensive hybrid IT solutions and governance, enabling businesses to navigate complexity and modernize their technology infrastructure, from cloud services to mainframe systems, tailored to each client's unique journey.

IT Services
1K-5K
Founded 1969

Description

  • Provide 24x7 production support for mainframe applications and resolve P1–P4 incidents within agreed SLAs.
  • Serve as the AMS Level 3 escalation point for complex incidents, problems, and application failures.
  • Perform root cause analysis and drive permanent fixes to prevent recurring issues.
  • Design, develop, maintain, and troubleshoot mainframe applications, including COBOL batch and online programs in CICS and IMS DC.
  • Execute application change requests, enhancements, and break-fix remediation within change management controls.
  • Lead COBOL upgrade activities from VS COBOL through IBM COBOL V6, including code retrofit, unit testing, system testing, and integration testing.
  • Manage application database maintenance across DB2, IMS DB, and VSAM file structures.
  • Support DevOps on Z activities, including static code analysis, automated testing, regression testing, and deployment to test, staging, and production environments.
  • Use GitHub with IBM DBB or GitHub with Endevor for source code management and enforce quality gates.
  • Lead knowledge transfer activities during onboarding and client transition, and mentor junior engineers to support team capability and knowledge retention.

Requirements

  • Advanced COBOL programming experience with IBM Enterprise COBOL V4–V6 in batch and online environments.
  • Experience with CICS transaction processing, including design, development, debugging, and tuning.
  • Strong JCL authoring and optimization skills, including batch scheduling concepts.
  • DB2 experience covering SQL development, application DBA tasks, and query optimization.
  • Experience with IMS DB/DC and VSAM file design, management, and performance tuning.
  • Working knowledge of z/OS sufficient to interpret system logs, dumps, and SMF data for troubleshooting.
  • Experience with modern source control and build tools such as GitHub and IBM Dependency Based Build (DBB).
  • Familiarity with modern IDEs and automated testing tools for mainframe environments, such as IBM Wazi Developer, VS Code extensions for Z, IBM Developer for z/OS, or Topaz.
  • Assembler knowledge is desirable but not mandatory at the application level.
  • Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field.
  • Extensive experience in mainframe application development, support, and maintenance.
  • Strong problem-solving, analytical, communication, and interpersonal skills.
  • Ability to work independently and as part of a team.
  • Experience with Netron Framework.

Benefits

  • Rotational 24/7 shift schedule.
  • Equal opportunity employer status.
  • Accommodations available during the recruitment process for candidates with disabilities.

Interested in this position?

Apply directly on the company website

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