Senior Mainframe Systems Programmer - ISV
Confirmed on the employer's own hiring board on Oct 2, 2026. First seen by Alion on Sep 1, 2026. Ensono scores B on the Alion truth index.
As the Senior Mainframe Systems Programmer, you will provide support for on-going projects that require the installation, upgrade, testing, configuration, and implementation of all ISV software. Your responsibilities also include monitoring and on call support for the software, research and evaluation of new software, assisting team members and other areas with technical questions and problem resolution.
You will have functional knowledge, use of z/OS components and detailed knowledge of support products such as tape management, scheduling, security, monitoring systems, and other z/OS supporting systems software.
Note: This is not an Applications Programming position.
Key Areas of Focus for this Role
- Participate in On-call Schedule
- Incident / Problem resolution
z/OS & Tools your main tasks are related to:
- Incident, change and problem handling.
- Configuration and customization.
- Setup of parameters.
- Communication with vendors.
- Participation/contribution to technical projects.
- Solid understanding of z/OS and related product software z/OS.
- Ability to support in solving problems and implementing changes.
- Working knowledge of TSO/ISPF, SDSF, JCL.
- Good written and verbal skills.
- Strong analytical and problem-solving skills.
What the Ideal Candidate Brings to this Role
Required Qualifications help to assure new Associates are set up for success in their role with Ensono. To be considered for this career opportunity, it is important that you meet all Required Qualifications. Candidates that may meet some, but not all, Other Qualifications are still encouraged to apply.
Required Qualifications
- Minimum of 7+ years of experience within a mainframe environment within a large enterprise or equivalent combination of education and experience
- Bachelor’s degree required and/or equivalent work experience
- Knowledge and understanding of z/OS and z/OS installation and maintenance including SMP/E.
- Strong knowledge of TSO/ISPF, SDSF, JCL.
- Strong knowledge of Unix System Services (USS)
- Strong knowledge of Unix System Services (USS) file system management and security
- Ability to perform skill set of a Mainframe System Programmer
- Ability to perform moderately complex ISV installations
- Ability to work well as a team member.
- Stress resistant in case of Major Incident- and/or emergency situations.
- Good interpersonal, verbal and written communication skills
- Customer Service skills at management level
- Good collaboration and teamwork skills
- Must be self-motivated.
- Strong analytical skills and problem-solving capabilities.
- Good planning and organizational skills.
- Initiative and good learning abilities.
Good to have
- Knowledgeable in z/OS security.
- Knowledgeable in z/OS systems programming functions.
- Understand z/OS services structure, Parallel Sysplex, Catalog management.
Why Ensono?
Ensono is a place to make better happen - for our clients and for your career. You can do great things through innovation or collaboration, by learning or volunteering, or to promote diversity and inclusion. You can do great things for your own health or for a healthier planet. Whatever it means to you to do great things we want Ensono to be the place you can do it.
We are a client-facing business, but we do encourage clients to allow us to work remotely most of the time so if you are not required to be on a client site, you can choose to work from home or in our Ensono offices.
Some of our benefits include:
- 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
- Education Reimbursement, Student Loan Assistance or 529 College Funding
- Sabbatical leave
- Wellness program
- Flexible work schedule
As of the date of this posting, a good faith estimate of the current pay scale for this role is $85,000 to $148,000 salary, based on a full-time schedule. Please note that placement in the range may vary based on numerous factors including but not limited to skills, experience, internal equity, and business needs. In addition to base salary, other compensation programs, depending on eligibility, include an annual bonus plan based on company and individual performance and an equity grant under our Associate Equity Appreciation Program.
Ensono is an Equal Opportunity/Affirmative Action employer. We are committed to providing equal employment to our Associates and building a diverse and inclusive workforce. All qualified applicants will be considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability, or other legally protected basis, in accordance with applicable law.
Pay transparency nondiscrimination statement/posting OFCCP’s pay transparency policy can be found on OFCCP’s website.
If you need accommodation at any point during the application or interview process, please let your recruiter know or email [email protected].