Referso Jobs

Computer Operator

Security Service Federal Credit Union · Posted Nov 4, 2026

Open

San Antonio, Texas, United States

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Computer Operator

Security Service Federal Credit Union · Posted Nov 4, 2026

Open

San Antonio, Texas, United States

Apply with RefersoAI Apply on careers page

Senior IBM z/OS Systems Programmer

Diné Development Corporation · Posted Oct 13, 2026

Open

Remote, United States
Remote
Full-time · Senior
7+ years

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The qualified individual will provide planning, which includes development of implementation and installation plans for IBM Mainframe projects, including OS, software, or hardware upgrades/installations.

Responsibilities

Provide timelines and milestones required for implementation or upgrade of the IBM mainframe platform to meet government established project deadlines.
Use required software tools including IBM System Modification Program/extended (SMP/e), IBM system utilities (IEBGENER, IEBCOPY, IDCAMS) to create, populate, update and configure required datasets and parameter libraries.
Create and deliver detailed installation/upgrade documentation using government specified software and processes.
Use IBM SMP/e to receive and apply z/OS software, interpreting output messages to resolve software installation issues.
Create, define, and manage system and user catalogs on the IBM Mainframe platform.

Requirements

Bachelor's degree in Science, Technology, Engineering, or Math
Nice to have: Secret Clearance
Nice to have: IAT-I Certification

Skills

IBM z/OS IBM SMP/e IEBGENER IEBCOPY

Mainframe Ops/App Support

Diné Development Corporation · Posted Aug 25, 2026

Open

Remote, United States
Remote
Full-time

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Seeking an individual to work within IBM and Unisys mainframe OS environments to support customer processing, applications, and configurations. Requires 3rd shift.

Responsibilities

Provide support controlling, diagnosing, and resolving difficult problems that arise due to incorrect ECL coding/programming techniques.
Provide IBM and Unisys Mainframe Operations/Application support including performing IPL in a highly-complex mainframe operating environment.
Provide generalized expertise in OS2200, z/OS, and z/VM operating environments, JES2, JCL, and OpCon Unisys scheduling tool.
Utilize a Windows-based personal computer workstation and the MS Office suite (Outlook, Excel, and Word), Internet browsers, Mainframe Terminal Emulation Software, and ITSM ticketing software.
Provide support using standard tools (currently BMC Control Products Suite) for scheduling to include building, maintaining, and scheduling batch processing (to include complex system abend (error) recovery techniques).

Skills

IBM Mainframe Unisys Mainframe OS2200 z/OS z/VM

Mainframe Solutions Architect

Diné Development Corporation · Posted May 1, 2026

Open

8+ years

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Responsibilities

Serve as the lead technical voice on mainframe architecture, application structure, data flows, and modernization feasibility for assigned engagements.
Engineer, administer, and troubleshoot IBM z/OS environments supporting DISA/DoD mission workloads, including advanced support for JES2, TSO/ISPF, SDSF, SMF/RMF, and SMP/E.
Support and tune DB2 for z/OS environments and CICS regions including configuration, performance tuning, and outage resolution.
Analyze dumps, logs, and system traces; drive root-cause analysis and implement permanent fixes.
Provide technical support to application teams for mainframe workloads, including code-level troubleshooting and job support in COBOL, REXX, JCL, and legacy languages such as FORTRAN as applicable.

Requirements

Nice to have: Direct experience supporting DISA, DoD, or other Federal defense agency mainframe programs
Nice to have: Assembler
Nice to have: ICAM systems
Nice to have: access control modernization
Nice to have: RACF/RBAC

Skills

IBM mainframe z/OS DB2 for z/OS CICS JCL TSO/ISPF SDSF JES2 SMP/E SMF/RMF ICAM RACF RMF Zero Trust SNAP/eMASS DISA STIG cloud migration API enablement

Benefits

medical
dental
vision
life and disability coverage
retirement savings with company match

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Senior SA Automation Specialist (z/OS)

Kyndryl · Posted Nov 5, 2026

Open

Sandton, South Africa
Senior
5+ years

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Design, implement, and support enterprise mainframe automation and workload scheduling solutions in large-scale z/OS environments.

Responsibilities

Administer, maintain, and support enterprise mainframe automation platforms and workload scheduling environments.
Develop, refine, and maintain complex automation scripts (REXX/JCL) and automated scheduling workflows.
Design, implement, and test automated monitoring and system recovery procedures to maximize service availability.
Establish and enforce workload scheduling standards and best practices across production environments.
Troubleshoot and resolve high-priority production scheduling, batch processing, and automation incidents.

Requirements

Nice to have: mainframe application development languages
Nice to have: COBOL
Nice to have: PL/I
Nice to have: Assembler
Nice to have: DB2

Skills

mainframe operations systems programming workload scheduling z/OS JCL

Senior IBM z/OS Communications Programmer

Diné Development Corporation · Posted Mar 16, 2026

Open

Remote
Remote
Senior

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Provide planning, development, and implementation of IBM Mainframe projects, including OS, software, and hardware upgrades and installations.

Responsibilities

Provide planning, which includes development of implementation and installation plans for IBM Mainframe projects.
Develop timelines and milestones related to the required steps for implementation or upgrade of IBM mainframe platform to meet government established project deadlines.
Use required software tools, including IBM SMP/e, IBM system utilities (including IEBGENER, IEBCOPY, IDCAMS), to create, populate, update and configure required datasets and parameter libraries and members to successfully implement software installations and upgrades on the IBM mainframe platform.
Create and deliver detailed installation/upgrade documentation, using government specified software and processes and formats.
Use IBM SMP/e to successfully receive and apply z/OS communications or networking software and other related software on an IBM Mainframe.

Requirements

Nice to have: A+ CE
Nice to have: CCNA-Security
Nice to have: Network+ CE
Nice to have: SSCP

Skills

IBM SMP/e IEBGENER

Mainframe Security Engineer

Ensono · Posted Sep 20, 2022

Open

Downers Grove, Illinois, United States

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The primary role of the Mainframe System Security Engineer is to create, modify and maintain security access on internal and external userids and security rules access for mainframe systems.

Responsibilities

Create, modify and maintain security access on internal and external userids and security rules access for mainframe systems
Review security policies, procedures, standards, baselines and recommend and coordinate security remediation plans
Maintain an understanding of security standards, policies and procedures
Hands‑on administration of RACF, ACF2 and Top Secret login IDs, dataset and resource rules
Monitor system security policy and violations/incidents

Requirements

CISSP
CISA
CISM
ITIL Certification
Bachelors or Masters Degree

Skills

RACF ACF2 Top Secret IBM zSecure REXX iSeries TSO JCL IBM UTILITIES JES2 ISPF CICS Vanguard MVS

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