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Senior Mainframe System Programmer - IMS

Ensono

Company : Ensono

Location : Chicago, IL

Posted Date : 15 September 2025

Job Type : Full Time

Category : Software Development

Occupation : Programmer

Job Details

Senior Mainframe System Programmer - IMSRemote - United StatesJR

At Ensono, our Purpose is to be a relentless ally, disrupting the status quo and unleashing our clients to Do Great Things ! We enable our clients to achieve key business outcomes that reshape how our world runs. As an expert technology adviser and managed service provider with cross-platform certifications, Ensono empowers our clients to keep up with continuous change and embrace innovation.

We can Do Great Things because we have great Associates. The Ensono Core Values unify our diverse talents and are woven into how we do business. These five traits are the key to achieving our purpose: Honesty, Reliability, Curiosity, Collaboration, and Passion.

Job Profile Summary

The IMS Mainframe Systems Programmer provides expert support for projects involving the installation, testing, and implementation of IBM IMS and related mainframe system software. This role is responsible for the maintenance, debugging, and optimization of IMS systems software, as well as the coordination of IOGEN work for new mainframe hardware. The position requires research and evaluation of new IMS software and hardware products, technical assistance to team members and other departments, and proactive monitoring and tuning of IMS environments. The ideal candidate will have deep functional knowledge of z/OS, IMS, and associated support products such as tape management, scheduling, security, and monitoring systems.

Job Description

The IMS Mainframe Systems Programmer supports ongoing projects requiring the installation, testing, and implementation of IMS and other system software. Responsibilities include maintenance and debugging of IMS systems software, coordination of IOGEN work for new mainframe hardware, and research and evaluation of new IMS software and hardware products. The role also involves assisting team members and other areas with technical questions and problem resolution, as well as monitoring and tuning IMS systems for optimal performance.

Duties and Responsibilities

  • Provide technical leadership and mentorship to team members, including formal and informal training on IMS and related technologies.

  • Lead and execute high-complexity assignments related to IMS installation, customization, and support.

  • Oversee and review moderate and low-complexity IMS-related assignments performed by others.

  • Act as a subject matter expert (SME) for IMS and related mainframe technologies.

  • Align IMS system strategies and solutions with overall Ensono and client objectives.

  • Provide technical architect-level support for IMS hardware and software solutions.

  • Participate in client meetings and new business opportunities, offering IMS expertise.

  • Collaborate directly with hardware and software vendors on IMS solutions and support.

  • Review and analyze client IMS software requirements to recommend cost-effective, standard solutions for business proposals.

  • Mentor and guide less experienced associates in IMS mainframe systems programming.

  • Design and implement automated monitoring techniques for IMS problem identification and prevention.

  • Provide and document IMS problem analysis, resolution, and prevention, including the development of procedures and best practices.

Supervisory Responsibilities

This position does not have direct reports but may mentor less experienced associates in the role.

Recruiting Information

Specific hiring needs may vary by location, industry, client, internal department, and other business-related factors. The qualifications section lists examples that may be used as guidance when populating required and preferred skills sections of recruiting requisitions/job postings.

Qualifications

  • Required: Ten years of hands-on/industry experience with IMS and mainframe systems programming.

  • Preferred:

  • Demonstrated ability to perform the full skill set of a Mainframe Systems Programmer with a focus on IMS.

  • Experience with complex ISV (Independent Software Vendor) installations related to IMS.

  • Proven ability to lead complex IMS projects and mentor others.

  • Strong communication skills for client and vendor interactions.

  • Experience designing and implementing automated monitoring and best practice procedures for IMS environments.

Travel

To be determined by field; needed to create job code and for Department of Labor.

WhyEnsono ( ?

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 through Blue Cross Blue Shield

  • 401k with company match

  • Eligibility for dental, vision, short and long-term disability, life and AD&D coverage, and flexible spending accounts

  • Paid Maternity Leave, Paternity Leave, and Sabbatical Leave

  • Education Reimbursement, Student Loan Assistance or 529 College Funding

  • Enhanced fertility coverage

  • Wellness program

  • Flexible work schedule

  • Depending on location, ability to take advantage of fitness centers

As of the date of this posting, a good faith estimate of the current pay scale for this role is $80,000 to $148,000 annually 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 onOFCCP's website ( .

If you need accommodation at any point during the application or interview process, please let your recruiter know or email .

JR

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