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Freelance Mainframe Applications Developer Jobs in Arizona

Kyndryl

Mainframe ZOS System Programmer

Phoenix, AZ

$79K - $152K/yr

... applications. * This role requires employees to live in or around the Phoenix, AZ area. You will be ... Knowledge of DevOps practices on mainframe (CI/CD pipelines). * Exposure to Zowe and APIs on z/OS.

Kyndryl

Mainframe ZOS System Programmer

Phoenix, AZ · On-site +1

$79K - $152K/yr

... applications. * This role requires employees to live in or around the Phoenix, AZ area. You will be ... Knowledge of DevOps practices on mainframe (CI/CD pipelines). * Exposure to Zowe and APIs on z/OS.

IDEALFORCE LLC

Application Developer/Sr (41553)

Phoenix, AZ · On-site

$95K - $131K/yr

Mainframe, Client/Server and Web. Design and development of relational databases. Budget and fiscal policies and procedures. Procurement rules and regulations. Human resource rules and policies.

Kyndryl

Mainframe CICS System Administrator

Phoenix, AZ · On-site +1

$61K - $146K/yr

Participate in on-call rotation with the engineering teams. * The ability to follow a project ... Applications will be accepted on a rolling basis. All qualified applicants will receive ...

Wells Fargo

Senior Systems Operations Engineer

Tempe, AZ · On-site

$100K - $137K/yr

... Mainframe /iSeries applications/NDM's/CA7 and Autosys. The Mainframe Operations team monitors all Mainframe Operating systems, network connections, daily mainframe batch processing providing 24/7/365 ...

blueStone

Sr. iOS developer

Phoenix, AZ · On-site

$59.50 - $77.25/hr

... applications development experience * Working experience with large-scale systems and/or back-end mainframe Additional Information Work with blueStone recruiting to find your next Mobile Development ...

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Mainframe ZOS System Programmer

Delan Associates, Inc.

Phoenix, AZ • On-site

$54.50 - $69.50/hr

Contractor

Posted 4 days ago

Job description

Job Title: Mainframe ZOS System Programmer
Location: Phoenix, AZ
The Mainframe z/OS System Programmer is responsible for the installation, customization, maintenance, and optimization of IBM z/OS operating systems and associated system software. This role ensures the stability, performance, security, and availability of mission-critical mainframe environments, supporting large-scale enterprise applications.
* This role requires employees to live in or around the Phoenix, AZ area. You will be responsible to be onsite 3 days a week. We will consider candidates who are willing to relocate to the area.
Responsibilities:
System Administration & Maintenance:
Install, configure, and maintain IBM z/OS operating systems.
Perform system upgrades, migrations (e.g., z/OS version upgrades), and apply maintenance (PTFs, APARs, RSUs).
Manage IPL processes, system initialization, and configuration (PARMLIB, PROCLIB, SYS1 datasets).
Monitor system health and performance using tools such as RMF, SMF, SDSF.
Subsystem Support:
Install, configure, and support key subsystems:
JES2/JES3
TSO/E, ISPF
USS (Unix System Services)
RACF (in coordination with security teams)
Work closely with DB2, CICS, IMS, MQ, and Storage teams for integration and support.
Performance & Capacity Management:
Analyze system performance metrics and implement tuning improvements.
Support capacity planning and resource optimization (CPU, memory, I/O).
Evaluate hardware upgrades (e.g., CPU/MIPS growth, z-series enhancements).
Problem Management & Troubleshooting:
Diagnose and resolve system-related issues, including system abends and failures.
Perform root cause analysis for outages and major incidents.
Work with IBM and vendors on problem determination and fixes.
Automation & Scheduling:
Develop and maintain automation using tools such as:
System REXX, CLIST
SA z/OS, NetView
Support job scheduling tools (e.g., CA7, Control-M where applicable).
Security & Compliance:
Support system-level security configurations aligned with RACF policies.
Ensure compliance with audit, regulatory, and enterprise security standards.
Assist in vulnerability remediation and patching activities.
Change & Release Management:
Execute changes through ITIL-based processes (ServiceNow or equivalent).
Prepare implementation plans, backout procedures, and validation steps.
Support weekend maintenance windows and IPL activities.
Documentation:
Create and maintain technical documentation, including:
System configurations
Standard Operating Procedures (SOPs)
Disaster Recovery plans

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