Senior System Engineer, IBM Mainframe

TISTA Science and Technology Corporation

. Install, configure, and maintain IBM mainframe operating systems, including IBM z/OS .

Posted 11/2/2026full-timeRemote • United StatesSenior💰 $130,730 - $155,500 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in IBM z/OS internals, system installation, and maintenance, with strong analytical and troubleshooting skills. Proficient in collaborating with teams for problem resolution and maintaining comprehensive documentation.

Highest-signal resume keywords

IBM Z/OS InternalsSMP/E Software InstallationJCL, REXX, SAS, COBOLBMC – MAINVIEW, CMFMainframe Performance Tuning

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

IBM Z/OSSMP/EJCLREXXSASCOBOLTSO/ISPFBMC – MAINVIEWPhoenix – EJESDisaster Recovery

Soft Skills

Analytical SkillsTroubleshooting SkillsCommunication SkillsOrganizational SkillsAttention to Detail

Tools & Technologies

DASDSMSDFSMSIEBCOPYIDCAMSIEBGENERCICSAutomation ToolsScheduling ToolsFDR

Certifications & Qualifications

Master's Degree in Computer ScienceTier 4/HIGH Background Investigation

Industry Keywords

Mainframe Operating SystemsSystem IPLsProblem DeterminationCapacity PlanningHigh Availability Configurations

About the role

Key responsibilities & impact

Install, configure, and maintain IBM mainframe operating systems, including IBM z/OS
Perform installation, upgrades, and maintenance of ISV products using tools such as SMP/E
Customize system parameters, libraries, and subsystems to meet organizational requirements
Apply maintenance including PTFs and APARs
Plan and execute system IPLs
Troubleshoot system issues, analyze dumps, and resolve software-related problems
Support storage management processes including DASD, SMS, and DFSMS
Maintain documentation for system configurations, procedures, and changes
Collaborate with application teams, operations, and vendors on problem resolution and enhancements
Participate in an on-call rotation and support after-hours maintenance windows

Requirements

What you’ll need

Strong experience with IBM z/OS internals and system components
Strong experience with SMP/E for software installation and maintenance
Strong experience with JCL, REXX, SAS, COBOL, SMP/E, and TSO/ISPF
Strong experience with BMC – MAINVIEW, CMF, BMC AmiOps automation
Strong experience with Phoenix – EJES
Strong experience with Innovation – FDR, DSF, FDREPORT, IAM
Strong experience with Chicago Soft – QwickRef
Knowledge of system utilities such as IEBCOPY, IDCAMS, IEBGENER
Experience with system IPLs, dump analysis, and problem determination
Experience with additional IBM subsystems such as CICS (preferred)
Familiarity with automation and scheduling tools (preferred)
Knowledge of disaster recovery and high availability configurations (preferred)
Experience with mainframe performance tuning and capacity planning (preferred)
Strong analytical and troubleshooting skills
Ability to work independently and in a team environment
Excellent documentation and communication skills
Attention to detail and strong organizational skills
Master's Degree in Computer Science, Electronics Engineering, other engineering or technical discipline, or equivalent PLUS 10 years of experience
Ten (10) years of additional relevant experience may be substituted for education
Ability to pass a Tier 4/HIGH Background Investigation
Availability to work Monday–Friday, 7:30 AM–4:00 PM CST
May require after-hours support for system maintenance and upgrades

Benefits

Comp & perks

Above-industry healthcare benefits
Remote working options
Paid time off
Training/certification opportunities
Healthcare Savings Account
Flexible Savings Account
Paid life insurance
Short-term disability
Long-term disability
401K match
Professional development reimbursement
Employee Assistance Program
Paid holidays
Military leave
Additional forms of compensation, such as bonuses, may be available for eligible positions