Senior Software/System Architect (IBM Mainframe)

TISTA Science and Technology is seeking a Senior Software/System Architect to join our growing team.

At TISTA, you'll do meaningful, mission driven work that improves lives alongside teammates you trust and leaders who are transparent and supportive. We invest in your learning and internal mobility so you can build a career that keeps advancing. We're proud to serve and hire Veterans, and we put people first in everything we do.

TISTA associates enjoy above Industry Healthcare Benefits, Remote Working Options, Paid Time Off, Training/Certification opportunities, Healthcare Savings Account & Flexible Savings Account, Paid Life Insurance, Short-term & Long-term Disability, 401K Match, Professional development reimbursement, Employee Assistance Program, Paid Holidays, Military Leave, and much more!

• Install, configure, maintain, and upgrade IBM z/OS and related system software.
• Administer and support system components such as JCL, REXX, JES3 Plus, TSO/E, and SMP/E.
• Monitor system performance, capacity, and availability; tune system resources as needed.
• Diagnose and resolve complex system-level problems and outages.
• Apply IBM maintenance (PTFs, HIPERs) and manage system upgrades and migrations.
• Implement and enforce security controls in coordination with information security teams.
• Support disaster recovery, business continuity, and system backup processes.
• Collaborate with application developers, DBAs, and operations teams.
• Maintain system documentation, procedures, and configuration standards.
• Provide on-call or after-hours support as required.

• 5+ years of hands-on experience as an IBM Mainframe Systems Programmer.
• Strong expertise with z/OS system internals and utilities.
• Experience with SMP/E, JCL, and system automation tools.
• Strong troubleshooting and problem-resolution skills.
• Ability to work independently in a high-availability environment.

Work Environment

• Enterprise or government data center environment.
• Mission-critical systems requiring high availability.
• May require after-hours maintenance or on-call support.

Preferred Qualifications

• Experience with IBM z hardware, sysplex, and parallel sysplex environments.
• Familiarity with CICS, and middleware integration.
• Experience in regulated or government environments.
• IBM or vendor certifications (z/OS, Mainframe Systems).
• Scripting or automation experience (REXX, CLIST, or z/OS automation tools).

Education:

• Master's Degree in Computer Science, Electronic Engineering, or other Electronic Engineering, or equivalent PLUS 10 Years of experience.
• Ten (10) years of additional relevant experience may be substituted for education.

Clearance:

• The ability to pass a Tier 4/HIGH Background Investigation.

Location:

• Remote, USA.
• Monday - Friday (8:00 AM - 4:30 PM CST).

Pay Range:

• The pay for this position ranges from $89,730 to $101,500.
• The actual salary offer will carefully consider a wide range of factors, including your skills, qualifications, experience, and location.
• Also, certain positions are eligible for additional forms of compensation, such as bonuses.
• TISTA associates are eligible to participate in our comprehensive benefits plan! More information can be found here: https://tistatech.com/working-at-tista/.