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Freelance Mainframe Applications Developer Jobs in Chicago, IL

Huntington

Site Reliability Engineer

Chicago, IL

$57K - $113K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Provide SRE production support for Mainframe applications, APIs, Web Services, and Microservices. * Troubleshoot incidents, outages, batch failures, API failures, performance issues, and integration ...

Huntington

Site Reliability Engineer

Chicago, IL · On-site

$58.75 - $78/hr

  • Medical

  • Life

  • Retirement

  • PTO

Provide SRE production support for Mainframe applications, APIs, Web Services, and Microservices. * Troubleshoot incidents, outages, batch failures, API failures, performance issues, and integration ...

Collabera

SAS Programmer

Lake Bluff, IL · On-site

SAS developer with 10+ year experience in base SAS plus Proc SQL Experience in SDTM standards ... and Mainframe applications. Interprets process, data modules, and business requirements into ...

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

  • Medical

  • Life

  • Retirement

  • PTO

The RACF Mainframe Security Engineer is accountable for delivery and implementation of IAM ... Experience with onboarding and decommissioning applications into RACF structures. * Experience ...

New

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

  • Medical

  • Life

  • Retirement

  • PTO

The RACF Mainframe Security Engineer is accountable for delivery and implementation of IAM ... Experience with onboarding and decommissioning applications into RACF structures. * Experience ...

New

Infosys

Mainframe Modernization Program Lead

Chicago, IL · On-site

$101K - $132K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... DevOps practices • Drive end-to-end transformation of legacy mainframe applications and data to cloud platforms • Align modernization initiatives with enterprise architecture, cloud adoption ...

Capgemini

Senior Legacy (Mainframe) Modernization Lead

Chicago, IL · On-site

$103K - $242K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... existing applications to align with modern technologies, typically involving cloud migration ... Engineering, or related field (advanced degree preferred). • 5+ years of experience building ...

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Freelance Mainframe Applications Developer information

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How much do freelance mainframe applications developer jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for freelance mainframe applications developer in Chicago, IL is $50.42, according to ZipRecruiter salary data. Most workers in this role earn between $44.81 and $58.70 per hour, depending on experience, location, and employer.

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Freelance Mainframe Applications Developer jobs near you
Infographic showing various Freelance Mainframe Applications Developer job openings in Chicago, IL as of August 2026, with employment types broken down into 52% Full Time, 6% Part Time, 3% Temporary, and 39% Contract. Highlights an 79% In-person, and 21% Remote job distribution, with an average salary of $104,868 per year, or $50.4 per hour.

Senior Mainframe Programmer

Sonoma Consulting Inc.

Glenview, IL • On-site

Full-time

Re-posted 20 days ago

Job description

Company Description

Sonoma Consulting is one of the fastest growing Global IT Consulting and Executive Search providers with offices in Naperville IL; Chicago IL; Tyson's Corner VA and Hyderabad India. 

Our clients range from start-ups to Fortune 500 companies throughout the world. We look to our large recruiting team to continue to build upon the high standards we have set and ways to continually improve our recruiting process around the speed and quality of the resources we deliver. The Sonoma team prides itself on best model for delivery of IT Resources in a 24/7 model, our high level of professionalism and integrity which enables us to create long-term, meaningful relationships with our clients. 

Job Description

Responsibilities:
    The Application programmer will be responsible for working with business analysts and the team members to develop new financial applications/enhancements.  This includes development, testing, code documentation, and production installation.
    The candidate will perform maintenance and simple modification of the existing systems.
    Rotating on-call support responsibilities for the existing Finance applications.
     Work on troubleshooting problems as well as recommend / implement effective solution.

Qualifications

Required Qualifications:
    The candidate must have the minimum of 3-5 years programming experience with Mainframe/COBOL.
    Experience working on systems with DB2 / SQL.
    MVS and JCL.
    TSO / ISPF.
    Familiarity with INSYNC, Xpeditor, CICS, SDSF, and  SCLM
     Strong attention to details and good troubleshooting skills.
    Must be able to work independently.

Additional Information

Sonoma Consulting is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law.

Sonoma Consult logo

About Sonoma Consult

Sourced by ZipRecruiter

Sonoma Consult is a California based C corporation helping companies bring products to the patient by working closely with the engineering teams and the clinicians. Our goal, no matter what stage of product development, is to create and execute a plan of action to move the product through the appropriate clinical and regulatory steps. Sonoma Consult works cohesively with the engineers and physicians to translate technologies to the clinic. Our goal is to help you get the very best product to the clinic and to the market. This includes planning, execution and ensuring critical data is delivered in the right format to ensure the feedback loop to the design team ultimately delivers the most advanced technology to the patient.

Industry

Business management consulting

Company size

1 - 10 Employees

Headquarters location

Sonoma, CA, US

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