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Onsite location: Chicago, IL
Job Description
We are looking for an experienced Mainframe Developer with strong expertise in COBOL, JCL, DB2, VSAM, and Unix Shell Scripting. The ideal candidate will be responsible for developing, supporting, and optimizing mainframe applications, building automation scripts, managing backend integration workflows, and ensuring reliability across production and batch systems. This role requires strong technical skills, problem-solving capabilities, and the ability to work effectively with cross-functional teams.
Key Responsibilities
Mainframe Development & Support
• Develop, enhance, and maintain applications using COBOL, JCL, VSAM, and DB2.
• Troubleshoot, debug, and resolve mainframe application issues across development, testing, and production environments.
• Optimize JCL, COBOL programs, and DB2 queries to improve system performance and efficiency.
• Support daily batch processing, ensure job success, and resolve job abends promptly.
Unix Shell Scripting & Backend Integration
• Develop and maintain Unix/Linux Shell Scripts for automation, batch scheduling, and system integrations.
• Ensure seamless integration between Unix-based automation and mainframe backend systems.
• Troubleshoot and enhance existing scripts, improving stability and execution performance.
Database & PL/SQL Development
• Develop and maintain PL/SQL procedures, functions, packages, and triggers.
• Perform SQL tuning and optimize database queries for performance.
• Integrate shell scripts with relational databases (Oracle, DB2, MySQL or similar).
Production Support & Performance Optimization
• Monitor scheduled jobs, resolve production incidents, and ensure overall batch stability.
• Conduct root-cause analysis (RCA) and implement permanent fixes.
• Enhance performance of scripts, jobs, and database queries through continuous tuning.
Collaboration & Documentation
• Work closely with stakeholders to gather requirements and translate them into scalable solutions.
• Participate in Agile ceremonies and collaborate with QA, business, and support teams.
• Create and maintain technical documentation including design specs, support guides, and system documentation.
Required Technical Skills
• Strong hands-on experience in Mainframe technologies: COBOL, JCL, VSAM, DB2.
• Solid expertise in Unix/Linux Shell Scripting.
• Strong SQL and PL/SQL skills (procedures, functions, triggers, packages).
• Experience integrating shell scripts with relational databases.
• Strong debugging, analytical, and problem-solving skills.
• Good understanding of batch processing and automation workflows.
• Ability to work independently and collaboratively within a team.
Preferred / Good to Have
• Experience in banking, cards, or financial services domains.
• Experience with ticketing tools and production support processes.
• Familiarity with Git, CI/CD pipelines, or DevOps practices.
• Knowledge of Python or Java for extended automation or backend integrations.
• Additional mainframe skills such as:
o COBOL, PL/I, Assembler, C/C++
o CICS, IMS, and system administration on DB2/CICS/IMS
o REXX scripting for automation and migration tasks
• Strong troubleshooting skills for IBM mainframe product-related issues
The base compensation range for this role in the posted location is: 60,000 - 70000
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.