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Mainframe Computer Jobs in Chicago, IL (NOW HIRING)

... mainframe computer and personal computer as required. Use Coordinate Measuring machine, a variety precision inspection tools and instruments, supermicrometers, hardness testing machine, computer ...

... mainframe computer and personal computer as required. Use Coordinate Measuring machine, a variety precision inspection tools and instruments, supermicrometers, hardness testing machine, computer ...

Experience and proficiency in using PC software and mainframe computer applications such as Excel, Access, Power Point, MS Project, Asset suite 8, Primavera P6 * Excellent verbal and written ...

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About the job you're considering Capgemini is seeking Senior Legacy Modernization (Mainframe ... Bachelor's degree in Business, Computer Engineering, or related field (advanced degree preferred ...

LOGISTICS TECHNICIAN

Chicago, IL

$19.50 - $24.75/hr

Position Requirements: • High School diploma or GED • 12 months experience stocking experience and/or receiving experience preferred. • Experience with mainframe or PC computer systems • Good ...

Perform UDP, Mainframe, and AS400 scans * Complete vault paperwork accurately as dedicated by ... Previous Experience working in a medium to large-scale computer data center environment is desired.

Java/J2EE Architect

Chicago, IL

$65 - $87.50/hr

... between mainframe application systems and various IBM and Microsoft Server Operation Systems ... in computer science or directly related fields, supplemented by five years of professional ...

... mainframe Operating Systems Good time/project management skills Good attention to detail Good problem solving skills Education and Experience Bachelors degree in Computer Science Additional ...

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How much do mainframe computer jobs pay per hour?

As of May 31, 2026, the average hourly pay for mainframe computer in Chicago, IL is $54.99, according to ZipRecruiter salary data. Most workers in this role earn between $48.56 and $62.40 per hour, depending on experience, location, and employer.

What is a Mainframe Computer job?

A Mainframe Computer job typically involves working with large-scale, high-performance computing systems used by enterprises for critical applications such as banking, finance, and healthcare. Responsibilities may include system administration, application development, performance monitoring, and troubleshooting. Professionals in this field often work with mainframe operating systems like z/OS and programming languages such as COBOL, JCL, and REXX. This role requires strong analytical skills and knowledge of legacy systems, as mainframes continue to be integral to many industries.

What are the key skills and qualifications needed to thrive in the Mainframe Computer position, and why are they important?

To thrive as a Mainframe Computer Operator or Specialist, you need a solid understanding of mainframe hardware, operating systems (such as IBM z/OS), and data center best practices, alongside a degree in computer science or related experience. Familiarity with job scheduling tools (like JCL), monitoring utilities, and expertise in mainframe programming languages (such as COBOL) are commonly required, and certifications such as IBM Certified System Programmer are advantageous. Attention to detail, strong troubleshooting abilities, and excellent communication skills are essential for coordinating with IT teams and resolving system issues. These competencies ensure the reliability, security, and efficiency of mission-critical mainframe systems in large organizations.

What are some common challenges faced by mainframe professionals in day-to-day operations?

Mainframe professionals often face challenges such as managing complex batch job schedules, troubleshooting unexpected system outages, and ensuring data security while dealing with legacy applications. The work requires careful monitoring for performance bottlenecks and rapid response to issues, often during off-hours or on-call rotations. Collaboration with programming, network, and system administration teams is frequent, as mainframe environments are integral to business-critical services. Successfully handling these challenges helps maintain uptime and reliability for the organization’s core operations.
What are popular job titles related to Mainframe Computer jobs in Chicago, IL? For Mainframe Computer jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Mainframe Computer jobs in Chicago, IL look for? The top searched job categories for Mainframe Computer jobs in Chicago, IL are:
Infographic showing various Mainframe Computer job openings in Chicago, IL as of May 2026, with employment types broken down into 4% Internship, 83% Full Time, 4% Temporary, 5% Contract, and 4% Nights. Highlights an 94% In-person, and 6% Remote job distribution, with an average salary of $114,373 per year, or $55 per hour.
Senior Legacy (Mainframe) Modernization Lead

Senior Legacy (Mainframe) Modernization Lead

Capgemini

Chicago, IL • On-site

$103.88K - $242.40K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 6 days ago


Capgemini North America rating

7.7

Company rating: 7.7 out of 10

Based on 17 frontline employees who took The Breakroom Quiz

77th of 203 rated it services


Job description

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you'd like, where you'll be supported and inspired by a collaborative community of colleagues around the world, and where you'll be able to reimagine what's possible. Join us and help the world's leading organizations unlock the value of technology and build a more sustainable, more inclusive world.
About the job you're considering
Capgemini is seeking Senior Legacy Modernization (Mainframe) leader who is a highly experienced technical leader responsible for designing and overseeing the process of updating and improving an organization's existing applications to align with modern technologies, typically involving cloud migration, infrastructure upgrades, and code refactoring, while ensuring the solutions meet business needs and are strategically aligned with the company's goals. Ideal candidate should have presales, GTM experience along with strong technical acumen.
Your role
• Experienced in Assessment and Strategy Development by evaluating mainframe application landscape, identifying legacy systems, and analyzing their technical debt.
• Defining a comprehensive application modernization strategy for mainframe and iseries technology stack including target architecture, migration approach, and technology roadmap.
• Experienced in defining the design and architecture for migrating / modernizing cloud-native architectures for legacy applications, considering scalability, performance, and security.
• Selecting appropriate modernization techniques mastering the R-factors like re-platforming, refactoring, or replacing applications based on business needs.
• Creating detailed technical blueprints for migration and modernization projects.
• Implementation and Oversight by Leading cross-functional teams through the application modernization process, including development, testing, and deployment.
• Monitoring progress, identifying risks, and making necessary adjustments to the modernization plan.
• Collaborating with stakeholders, partners to ensure alignment between business requirements and technical solutions.
• Ability to analyze complex systems and develop a strategic vision for application modernization.
• Provide Technical Leadership to guide teams through technical challenges and ensuring quality standards are met.
• Define and provide strategy for OCM and new operating model for the modernized estate and enable new service definition
Your skills and experiences
• 16+ years of experience with minimum of 10+ years of experience leading IT related "Cloud " projects of various size/scope.
• Bachelor's degree in Business, Computer Engineering, or related field (advanced degree preferred).
• 5+ years of experience building solutions and products on cloud computing infrastructure (Azure, AWS, GCP and non hyperscaler products like Codeium, pool.ai etc.) to modernize mainframe infrastructure and applications
• 15+ years in Application Development and Modernization with Hyperscalers like Azure , AWS , GCP
• Proven record of accomplishment of solutioning and delivering large scale legacy application modernization and transformation deals with mainframe and/or iSeries platforms
• Deep understanding of various cloud platforms (AWS, Azure, GCP) and nice to have experience in non hyperscalar enterprise cloud frameworks and their capabilities for application modernization.
• Proficiency in modern programming languages, frameworks, and design patterns relevant to cloud-native development.
• Knowledge of containerization technologies (Docker, Kubernetes, MicroFocus, Raincode, mLogica) for improved scalability and deployment.
#LI-PS1
The base compensation range for this role in the posted location is $103,879 - $242,400
Capgemini provides compensation range information in accordance with applicable national, state, provincial, and local pay transparency laws. The base compensation range listed for this position reflects the minimum and maximum target compensation Capgemini, in good faith, believes it may pay for the role at the time of this posting. This range may be subject to change as permitted by law.
The actual compensation offered to any candidate may fall outside of the posted range and will be determined based on multiple factors legally permitted in the applicable jurisdiction.
These may include, but are not limited to: Geographic location, Education and qualifications, Certifications and licenses, Relevant experience and skills, Seniority and performance, Market and business consideration, Internal pay equity.
It is not typical for candidates to be hired at or near the top of the posted compensation range.
In addition to base salary, this role may be eligible for additional compensation such as variable incentives, bonuses, or commissions, depending on the position and applicable laws.
Capgemini offers a comprehensive, non-negotiable benefits package to all regular, full-time employees. In the U.S. and Canada, available benefits are determined by local policy and eligibility and may include:
  • Paid time off based on employee grade (A-F), defined by policy: Vacation: 12-25 days, depending on grade, Company paid holidays, Personal Days, Sick Leave
  • Medical, dental, and vision coverage (or provincial healthcare coordination in Canada)
  • Retirement savings plans (e.g., 401(k) in the U.S., RRSP in Canada)
  • Life and disability insurance
  • Employee assistance programs
  • Other benefits as provided by local policy and eligibility

Important Notice: Compensation (including bonuses, commissions, or other forms of incentive pay) is not considered earned, vested, or payable until it becomes due under the terms of applicable plans or agreements and is subject to Capgemini's discretion, consistent with applicable laws. The Company reserves the right to amend or withdraw compensation programs at any time, within the limits of applicable legislation.
Disclaimers
Capgemini is an Equal Opportunity Employer encouraging inclusion in the workplace. Capgemini also participates in the Partnership Accreditation in Indigenous Relations (PAIR) program which supports meaningful engagement with Indigenous communities across Canada by promoting fairness, accessibility, inclusion and respect. We value the rich cultural heritage and contributions of Indigenous Peoples and actively work to create a welcoming and respectful environment. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law.
This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodation does not pose an undue hardship. Capgemini is committed to providing reasonable accommodation during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact.
Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process.
Click the following link for more information on your rights as an Applicant in the United States. http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law
Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem.

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