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Mainframes Developer Jobs in Springfield, IL (NOW HIRING)

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Mainframes Developer information

See Springfield, IL salary details

$47.6K

$110.9K

$164.5K

How much do mainframes developer jobs pay per year?

As of Jun 11, 2026, the average yearly pay for mainframes developer in Springfield, IL is $110,851.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,200.00 and $128,800.00 per year, depending on experience, location, and employer.

What does a mainframe developer do?

A mainframe developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They work in environments that require high reliability and security, and may also handle system updates, performance tuning, and integration with other systems.

What is mainframe developer salary?

The salary for a mainframe developer typically ranges from $70,000 to $120,000 annually, depending on experience, location, and certifications. Senior roles or those with specialized skills in COBOL, JCL, or mainframe environments may earn higher compensation. Many positions also offer benefits such as health insurance and retirement plans.

Can mainframe be replaced by AI?

Mainframes are large-scale computing systems used for critical enterprise applications, and while AI can automate certain tasks and improve efficiency, it does not replace the core functions of mainframes. Mainframe developers often work with legacy systems, COBOL programming, and security protocols, which require specialized skills that are not fully replaced by AI technologies.

Is mainframe still in demand?

Mainframes remain in demand for large enterprises such as banks, insurance companies, and government agencies that rely on their reliability, security, and processing power. Mainframe developers with skills in COBOL, JCL, and mainframe environments are sought after to maintain and upgrade legacy systems, though the overall demand has decreased as organizations adopt cloud and distributed computing. Certification and experience with mainframe tools can enhance job prospects in this specialized field.

What is the difference between Mainframes Developer vs Mainframes Analyst?

AspectMainframes DeveloperMainframes Analyst
Required CredentialsTypically a degree in Computer Science or related field; certifications like IBM Certified SpecialistSimilar credentials; often holds certifications in mainframe systems and analysis
Work EnvironmentDevelops, codes, and tests mainframe applications in a software development settingAnalyzes existing mainframe systems, gathers requirements, and supports system improvements
Employer & Industry UsageUsed by banks, insurance companies, and large enterprises for application developmentEmployed in similar industries for system analysis, troubleshooting, and process optimization

While both roles require knowledge of mainframe systems and similar credentials, Mainframes Developers focus on creating and maintaining mainframe applications, whereas Mainframes Analysts analyze existing systems to improve performance and efficiency. Both roles are vital in large enterprise IT environments.

What are popular job titles related to Mainframes Developer jobs in Springfield, IL? For Mainframes Developer jobs in Springfield, IL, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Springfield, IL look for? The top searched job categories for Mainframes Developer jobs in Springfield, IL are:
What cities near Springfield, IL are hiring for Mainframes Developer jobs? Cities near Springfield, IL with the most Mainframes Developer job openings:
Infographic showing various Mainframes Developer job openings in Springfield, IL as of June 2026, with employment types broken down into 50% Full Time, and 50% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,851 per year, or $53.3 per hour.
Information Systems Advisor I - IBM zVM Systems Administrator

Information Systems Advisor I - IBM zVM Systems Administrator

Illinois Secretary of State

Springfield, IL • On-site

$6K - $12K/mo

Full-time

Posted 3 days ago


Job description

Office of the Illinois Secretary of State Alexi Giannoulias
Job Title: Information Systems Advisor I - IBM zVM Systems Administrator
Division: Technology Office - Infrastructure
Union: IFT
Location: 501 S 2nd St., Springfield, IL - Sangamon County
Salary: Range from $6,759 to $12,573 monthly. Commensurate with experience
Benefits: https://cms.illinois.gov/benefits/stateemployee.html
Attention: Applicants must be authorized to work in the United States; the Office of the Secretary of State will not complete certification and/or sponsorship requests.
Overview:
Responsible for managing and maintaining the State's mission-critical IBM mainframe virtualization infrastructure. This role acts as an IBM z/VM Administrator and is responsible for the installation, configuration, monitoring, and administration of IBM z/VM environments, ensuring system stability, performance, and security in support of statewide business applications and services. Must have deep expertise in z/VM systems management, zLinux virtualization, and resource administration, with the ability to work independently and collaboratively on high-availability, enterprise-scale environments.
Duties and Responsibilities:
System Administration
  • Install, configure, and maintain IBM z/VM operating environments.
  • Apply maintenance, service packs, and system upgrades.
  • Monitor and manage z/VM system resources including CPU, memory, and I/O.
User and Resource Management
  • Administer virtual machine definitions, directory entries, and user access.
  • Manage z/VM spool, minidisks, and shared resources.
  • Maintain performance tuning and capacity planning documentation.
Security & Compliance
  • Implement and enforce RACF policies for z/VM directory and resource access.
  • Configure and support secure networking with AT-TLS and SSL/TLS keyrings.
  • Ensure compliance with SOC2, IRS Pub 1075, and other State of Illinois security frameworks.
Disaster Recovery & High Availability
  • Participate in Disaster Recovery (DR) testing and system restoration planning.
  • Develop and maintain z/VM recovery runbooks and operational procedures.
Support & Collaboration
  • Troubleshoot and resolve z/VM system issues, performance problems, and outages.
  • Work with vendors (IBM, HPE, etc.) and internal DoIT teams for upgrades, migrations, and issue resolution.
  • Provide documentation, training, and mentoring to junior staff and operations personnel.
  • Performs other duties as required or assigned.
Education and Experience:
Requires knowledge, skill, and mental development equivalent to the completion of two years of college, with coursework in the computer science field AND four years of experience with technical systems and/or programming experience and/or IT project management OR any equivalent combination of education and experience.
Knowledge, Skills and Abilities:
  • Requires extensive knowledge of systems design and implementation, including the way programs are written, compiled, and tested, the methods of operating computers, and the way data is transcribed into a form suitable for reading by computer and has an appreciation of the wider business context for those programs.
  • Requires excellent oral and written communication skills for effective engagement with colleagues and internal users/customers.
  • Requires extensive knowledge necessary to effectively perform the ability to exercise sound judgement in analyzing, appraising, evaluating, and solving problems of a procedural, organizational, administrative, and technical nature.
  • Requires awareness and adherence to organizational standards for security, privacy and ethics.
  • Requires extensive knowledge of the devices for capturing data for computers and the means available for receiving and transmitting data from remote locations to a computer.
  • Requires extensive knowledge of the principles and techniques of computer system documentation.
  • Requires extensive knowledge of the advantages and limitations of computer communication, and information retrieval systems as management information tools.
  • Requires the ability to organize facts and findings, analyze data logically and to present results with clarity and comprehension, orally and in written or graphic form.
  • Requires the ability to use and understand appropriate methods, tools, applications, and processes to demonstrate a rational and organized approach to work.
  • Requires willingness to travel and possession of a valid Illinois driver's license as required by individual positions within the class.
  • Requires the ability to push/pull, lift and carry up to 50 lbs. Requires a valid Illinois Driver's License.
Application Process:
  • Please visit https://ilsos.applytojob.gov/apply to apply by completing the online application; you may also upload a resume or other attachments as needed.
  • Preference will be given to Illinois residents in the hiring and selection process, in accordance with the Illinois Secretary of State Merit Employment Code.
  • Questions regarding this posting or Illinois Secretary of State employment practices may be directed to Job Counselors at our Personnel offices in Chicago (312-793-5515) or Springfield (217-782-4783).
Equal Employment Opportunity Employer. Applicants must be lawfully authorized to work in the United States.
Applicants are considered for all positions without regard to race, color, religion, sex, national origin, sexual orientation, age, marital or veteran status, or the presence of a non-job-related medical condition or disability.