Senior z/OS Platform Engineer
- Pay
- $235,000 – $310,000 per year
- Location
- Chicago, IL · On-site
- Job type
- Full-time
- Level
- Senior
- Experience
- 3+ years
- Listed
- 30 days ago
Skills & highlights for this role
- z/OS
- CICS
- Db2
Also useful
- JCL
- SMP/E
- Zowe
Stated benefits & perks
- Medical
- Dental
- Vision
- Tuition
- Paid parental leave
How You'll Make An Impact
Our technology team builds the software that powers our e-commerce experience and our world-class operations. From customer-facing web features to distribution center automation, we design and scale critical systems that enable McMaster-Carr to deliver same-day or next-day orders reliably and efficiently. As a Senior z/OS Platform Engineer, you'll work on projects like:
- Re-imagining our COBOL development lifecycle, incorporating VSCode, Zowe, and CI/CD pipelines.
- Designing and transitioning to a new data layout for critical subsystems to meet recovery time objectives.
- Upgrading DB2 and other fundamental platform components with comprehensive assessment of dependencies and robust risk mitigation practices.
- Detecting and analyzing trends in z operations to optimize resource use and development velocity.
What You'll Do
As a Senior z/OS Platform Engineer you will
- Perform a broad range of mainframe infrastructure tasks, including supporting CICS and Db2 subsystems, applying system maintenance, and replacing physical hardware.
- Write code to enhance the availability, resiliency, and efficiency of mainframe software and systems that bring value to customers.
- Leverage application, resource, and system data to drive down costs and support company goals and strategies.
- Build technical knowledge through learning groups, book clubs, and one-on-one mentoring.
Who You Are
We're looking for curious, driven engineers who thrive in collaborative environments and love solving hard problems. Ideal candidates will have:
- At least 3 years of experience with technologies such as z/OS, CICS, Db2, JCL, SMP/E, SMS/ACS, Networking, z/OSMF, and Zowe.
- A thoughtful, analytical approach to problem-solving and technical design.
- Clear, confident communication skills across technical and non-technical audiences.
- Interest in mentoring, coaching, and growing as a leader.
Cash Compensation
- Total cash compensation is generally around $235,000 to $310,000 and includes a profit sharing based on company profitability.
- You will also receive a relocation stipend and signing bonus.
Benefits
Growth & Learning
- 100% tuition reimbursement
- Informal and formal mentorship
- Employee resource groups
Health & Wellbeing
- Medical, dental, pharmacy, and vision plans with no monthly premiums
- Inclusive, all-gender benefits
Family & Future
- Paid parental leave for all new parents
- Adoption and surrogacy assistance
- First-time home buyer assistance
- Industry-leading company-funded retirement accounts
Time Off
- Paid vacation and personal time
Who We Are
McMaster-Carr is a leading e-commerce company that industrial customers have trusted for over 120 years. Our products help them get manufacturing lines back up quickly, keep operations running smoothly, and prototype the next generation of innovative solutions. We earn and keep that trust by offering the right products, making them easy to find, and delivering them fast, so our customers can solve problems with greater speed, precision, and ease.
Our industry-leading e-commerce experience, indispensable product selection, and world-class service bring hundreds of thousands of customers to our site each day. But we're never standing still. Our curious, exceptional people are at the heart of our evolution. They turn new challenges and disruptive technologies into opportunities to refine our operations, expand our offering, and deliver a better experience for every customer.
Equal opportunity and legal notices
We are proud to be an Equal Opportunity Employer and dedicated to providing employees a workplace with reasonable accommodations and free of discrimination, harassment, and retaliation. At McMaster-Carr, we do not make employment decisions based on age, ethnicity, citizenship status, military status, gender identity and expression, race, religion, disability status, marital status, sexual orientation, or any other legally protected group.
This position is not eligible for work authorization sponsorship by McMaster-Carr.
Data We Collect
We may collect professional, education and employment-related data, and any assessments made throughout the recruiting process, to evaluate candidacy for employment. To communicate with job applicants, we may collect applicant names, contact information, and other personal identifiers, including those outlined in the California customer records statute. Through voluntary disclosure, we may also collect protected classifications under federal or California law (e.g., race, gender, etc.). For additional details about the personal information we collect and its uses, please
From McMaster-Carr's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
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Common questions
What is the salary for the Senior z/OS Platform Engineer role at McMaster-Carr?
The Senior z/OS Platform Engineer posting at McMaster-Carr states compensation of $235,000 – $310,000 per year. It is listed as a full-time position. Final pay may depend on location, experience, and interview evaluation on McMaster-Carr's official career site.
Where is the Senior z/OS Platform Engineer job at McMaster-Carr located?
This Senior z/OS Platform Engineer position at McMaster-Carr is located in Chicago, IL (On-site). Always check McMaster-Carr's application page for specific state eligibility or relocation policies.
What qualifications are required for Senior z/OS Platform Engineer at McMaster-Carr?
For the Senior z/OS Platform Engineer role, McMaster-Carr highlights 3+ years of relevant experience; experience with z/OS, CICS, Db2. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Senior z/OS Platform Engineer position at McMaster-Carr?
This listing links directly to McMaster-Carr's Greenhouse application page. You can apply directly on McMaster-Carr's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.