Mainframe Developer Remote only Boston, MA

Role: Mainframe Developer

Duration: 12 Months
Location: Remote

Duration: 12+ months

Must have: Mainframe, Z/OS, z/OS Upgrade & Migration, z/OS 2.4 to z/OS 3.1, AT-TLS setup

Job description:

Required Experience:

5+ years of experience in z/OS systems programming and upgrades.
Hands-on experience upgrading from z/OS 2.4 to z/OS 3.1.
Strong expertise in z/OSMF implementation, configuration, and troubleshooting.
Proficiency in SMP/E for software installation and maintenance.
Experience with SAF security controls, ISFPARMS configuration for SDSF, and job submission restrictions.
Knowledge of AT-TLS setup, policy configuration, and integration with TCP/IP applications.
Experience with JES2, PARMLIB updates, and IPL procedures.
Ability to analyze system logs, dumps, and performance reports (RMF/SMF) to troubleshoot issues.

Nice to Have:

Familiarity with RACF security integration for SAF resource protection.
Experience implementing IBM Workload Manager (WLM) policies for optimized performance.
Understanding of z/OS Communications Server, VTAM, and TCP/IP networking.
Automation experience using REXX.
Certifications such as IBM Certified System Programmer – z/OS (or equivalent).

Essential Duties and Responsibilities:

z/OS Upgrade & Migration
Plan, coordinate, and execute z/OS 2.4 to z/OS 3.1 upgrades using z/OSMF Workflows and Software Management.
Perform SMP/E maintenance, including applying PTFs, APARs, and HOLDDATA resolution.
Conduct pre-upgrade system health checks, compatibility assessments, and fallback planning.
Execute IPL testing, JES2 configuration updates, and system validation post-upgrade.

z/OSMF Implementation & Configuration

Install, configure, and maintain z/OSMF for automation, software deployment, and incident tracking.
Utilize z/OSMF Workflows for system provisioning, migration tasks, and security updates.
Troubleshoot and resolve z/OSMF-related issues to optimize performance.

SAF & ISFPARMS Configuration for SDSF

Configure ISFPARMS to define SAF (RACF) access policies for SDSF.
Implement SAF authorization checks for SDSF panels, JES, and spool access.
Modify ISFPARMS settings to restrict or grant permissions based on user roles.
Work with security teams to define SAF rules for SDSF functions and audit SAF logs.