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Ensono

Senior Mainframe Systems Programmer - ISV z/OS-2

Ensono · Remote - United States

Posted about 3 months ago · $85,000 to $148,000

or apply directly on Ensono's site. We never take the application ourselves.

Is this posting real?

This role has been open
81 days
Ensono's roles stay open a median of 72 days
Reposted
No
Salary listed
Yes
32% of Ensono's roles list one
Ghost-job risk at Ensono
high
69 stale, 1 reposted of 69 open
Hiring momentum
123 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-23

Measured from postings appearing on and disappearing from Ensono's own greenhouse board since 2026-08-03. Full hiring picture for Ensono.

About this role

The Senior Mainframe Systems Programmer will focus on the installation, maintenance, and migration of ISV products on the IBM z/OS platform. This role involves evaluating and replacing software solutions while ensuring operational stability, troubleshooting issues, and collaborating with various teams to manage product transitions and document processes.

Our read on this posting4.0out of 5
benefits
5/5
freshness
1/5
career value
4/5
role clarity
5/5
pay transparency
5/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Ensono as an employer.

What you need

  • Extensive experience as a z/OS Systems Programmer supporting enterprise mainframe environments
  • Strong background in installation and maintenance of ISV mainframe software products
  • Hands-on experience with SMP/E software installation and maintenance processes
  • Experience performing product migrations or conversions between competing vendor tools
  • Strong troubleshooting and diagnostic skills across the z/OS platform
  • Experience with IBM utilities and system tools commonly used in z/OS environments

Nice to have

  • Experience specifically replacing ISV mainframe products with alternative vendor solutions
  • Familiarity with common ISV categories such as output management, security, scheduling, storage management, performance monitoring, database tools, automation operations
  • Experience working with vendor support organizations to resolve complex technical issues
  • Knowledge of z/OS system internals, JES, RACF, and subsystem integration
  • Experience with automation, scripting, or operational tooling in the z/OS environment

What you get

  • Unlimited Paid Days Off
  • Three health plan options
  • 401k with company match
  • Eligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts
  • Family Forming Benefit including fertility coverage and adoption/surrogacy reimbursement
  • Paid childbearing and paternal leave

Worth weighing

  • No specific mention of the technology stack beyond z/OS and ISV products
  • Role may involve complex migrations which could be challenging
  • Remote work is encouraged but may depend on client requirements

Summarised from Ensono's posting. Read the full original.

Listed by Ensono on their greenhouse job board, last confirmed open on 2026-10-23. PitchMeAI is not the employer.

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