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Senior Mainframe Developer Jobs in Elgin, IL (NOW HIRING)

Trident Consulting

Sr Mainframe Programmer

Chicago, IL · On-site

$45/hr

Sr Mainframe Programmer Trident Consulting is seeking a Sr Mainframe Programmer for one of our clients in Brookfield, WI Richfield, MN Chicago, IL Irving, TX Atlanta, GA (Onsite) Length of Assignment ...

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Yochana

Senior Mainframe Developer

Naperville, IL · On-site

The scope of the opening is to work on L2L3 tickets (with code changes) and also to work on minor enhancements and change requests. 1. Primary knowledge in Mainframe Cobol. 2. Secondary knowledge in ...

Capgemini

Senior Mainframe Analyst

Chicago, IL · On-site

Senior Mainframe Analyst Choosing Capgemini means choosing a company where you will be empowered to ... engineering impact analysis for modernization initiatives Work with business stakeholders to ...

United Airlines

Senior Mainframe Analyst

Chicago, IL · On-site

... engineering impact analysis for modernization initiatives Work with business stakeholders to ... to mainframe modernization re platform re engineering programs Ability to perform impact analysis ...

Capgemini

Senior Mainframe Analyst

Chicago, IL · On-site

... engineering impact analysis for modernization initiatives Work with business stakeholders to ... to mainframe modernization re platform re engineering programs Ability to perform impact analysis ...

Northern Trust

Mainframe Senior Developer

Chicago, IL · On-site

$99K - $169K/yr

AND Principal Responsibilities The Mainframe Senior Developer is responsible for installing, maintaining, upgrading, and supporting various system software products for TNT's z/OS operating system ...

Ensono

Mainframe Systems Programmer - Hardware

Chicago, IL · On-site

$102K/yr

Mainframe Systems Programmer - HardwareRemote - United StatesJR013743 Mainframe Systems Programmer ... As the Senior Solution Delivery Architect, you will be responsible for configuration of mainframe ...

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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Senior Mainframe Developer information

See Elgin, IL salary details

$38

$56

$65

How much do senior mainframe developer jobs pay per hour?

As of Jul 6, 2026, the average hourly pay for senior mainframe developer in Elgin, IL is $56.99, according to ZipRecruiter salary data. Most workers in this role earn between $53.46 and $62.26 per hour, depending on experience, location, and employer.

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.

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 Senior Mainframe Developers?

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.
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Senior Mainframe Developer jobs near you
Infographic showing various Senior Mainframe Developer job openings in Elgin, IL as of June 2026, with employment types broken down into 63% Full Time, 31% Part Time, 3% Temporary, and 3% Contract. Highlights an 83% Physical, 6% Hybrid, and 11% Remote job distribution, with an average salary of $118,538 per year, or $57 per hour.
Job Title: Senior Mainframe Programmer

Job Title: Senior Mainframe Programmer

Apolis

Chicago, IL • On-site

Other

Posted 2 days ago

Job description

Senior Mainframe Programmer

We are seeking an experienced Senior Mainframe Programmer with strong expertise in mainframe application development and support. The ideal candidate will have extensive experience working with COBOL, DB2, CICS, VSAM, and JCL in enterprise environments.

Key Responsibilities
  • Develop, enhance, and maintain enterprise mainframe applications.
  • Analyze business requirements and provide technical solutions.
  • Perform coding, testing, debugging, and production support.
  • Optimize application performance and resolve production issues.
  • Collaborate with cross-functional teams throughout the software development lifecycle.
  • Participate in code reviews and ensure adherence to development standards.
Required Skills
  • 12+ years of overall IT experience.
  • 8+ years of hands-on experience in Mainframe development.
  • Strong expertise in COBOL, VSAM, DB2, CICS, and JCL.
  • Experience with application maintenance, enhancements, and production support.
  • Strong analytical, troubleshooting, and problem-solving skills.
  • Excellent communication and collaboration skills.
Preferred Skills
  • Experience with Git version control.
  • Familiarity with IBM Developer for z/OS (IDz).
  • Experience working in Agile environments.

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