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Senior Mainframe Developer Jobs in Illinois (NOW HIRING)

Broadcom

Senior Mainframe DevOps Architect

Lisle, IL · On-site

$127K - $173K/yr

About the Role We are seeking a Senior Mainframe DevOps Architect to lead solution design and own end-to-end architecture for enterprise customers-translating complex business requirements into ...

Accenture

Mainframe Specialist

Chicago, IL · On-site

$70K - $196K/yr

Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ... Collaborate with senior leadership to secure executive sponsorship and organizational buy-in for ...

Amaze Systems Inc.

Senior Developer

Naperville, IL · On-site

$54.50 - $72/hr

Technical Skills (APPS)-Mainframe-Language-Mainframe - COBOL Job : Technical Lead Other Requirement ... Senior Developer Mandatory Skills Mainframe Cobol (Primary) JCL CICS VSAM Unix Shell scripting is ...

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How much do senior mainframe developer jobs pay per hour?

As of Aug 26, 2026, the average hourly pay for senior mainframe developer in Illinois is $55.87, according to ZipRecruiter salary data. Most workers in this role earn between $52.40 and $61.01 per hour, depending on experience, location, and employer.

What is a senior mainframe developer?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.

What are some common challenges faced by senior mainframe developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What are the key skills and qualifications needed to thrive as a senior mainframe developer, and why are they important?

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

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Senior Mainframe Developer jobs near you
Infographic showing various Senior Mainframe Developer job openings in Illinois as of August 2026, with employment types broken down into 80% Full Time, 9% Part Time, and 11% Contract. Highlights an 81% Physical, 5% Hybrid, and 14% Remote job distribution, with an average salary of $116,202 per year, or $55.9 per hour.

Sr Mainframe Programmer

Chicago, IL • On-site

Ruri Software Technologies LLC
Software Development • 11 - 50 employees
Learn more about Ruri Software Technologies LLCexternal

Full-time

Re-posted 20 days ago

Job description

Job Title: Sr Mainframe Programmer
Location: Brookfield, WI Richfield, MN Chicago, IL Irving, TX Atlanta, GA(Hybrid)
Job Requirements:
- Resource should be hands on in Mainframe Technologies COBOL, VSAM, DB2, CICS, JCL
- Having knowledge in GIT and IDZ will be an additional advantage
Years of experience required: 8+
Years of Experience: 12.00 Years of Experience
Regards
Danyal
danyal@rurisoft.com

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