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Mainframes Developer Jobs in Ohio (NOW HIRING)

ITTConnect

Senior Developer - IBM z/OS Connect

Columbus, OH · On-site

$52.75 - $69.50/hr

ITTConnect is seeking a Senior Mainframe Developer - IBM zOS Connect to work on site for a client in the Columbus, OH area. This is a contract position with a client that is a global leader in ...

USM

Mainframe Developer-----Need GC and USC

Columbus, OH · On-site

$47.25 - $60.75/hr

Mainframe Developer Duration - 18 months Location - Columbus, OH Need GC and USC Top Three Skills: Mainframe, Cobol, IDMS, Agile, Scrum The ideal candidate should have experience with CICS, JCL, ESP ...

Judge Group, Inc.

Mainframe Sys Engineer

Columbus, OH

$51.50 - $65.50/hr

Mainframe Application Configuration & Automation Engineer Location: Columbus, OH 6+ Months Contract to hire Role Overview We are seeking a Mainframe Application Configuration & Build Specialist with ...

Prophecy Technologies

Tibco Developer

Columbus, OH · On-site

Role Name Tibco Developer Job Summary We are seeking a skilled Tibco Developer with hands-on ... Support System Z (z/Linux) mainframe environments * Work with File-Aid for mainframe data ...

Lorven Technologies

Senior Java Developer

Columbus, OH · On-site +1

$55.25 - $70.50/hr

We are looking for an experienced Senior Java Developer with strong expertise in mainframe migration and cloud modernization. This is Full Time & Remote role who can work In EST Time Zone Role ...

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Mainframes Developer information

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 Ohio? For Mainframes Developer jobs in Ohio, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Ohio look for? The top searched job categories for Mainframes Developer jobs in Ohio are:
Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Ohio as of May 2026, with employment types broken down into 21% Full Time, and 79% Contract. Highlights an 94% In-person, and 6% Hybrid job distribution.
Senior Developer - IBM z/OS Connect

Senior Developer - IBM z/OS Connect

ITTConnect

Columbus, OH

$52.75 - $69.50/hr

Full-time

Posted 11 days ago

Job description

ITTConnect is seeking a Senior Mainframe Developer - IBM zOS Connect to work on site for a client in the Columbus, OH area. This is a contract position with a client that is a global leader in consulting, digital transformation, technology and engineering services with over 300,000 team members in nearly 50 countries. The end client is in the Utilities sector.

Job location: Columbus, OH or Nashville, TN (both locations would be for on site work) We are seeking a Senior Developer with strong expertise in IBM z/OS Connect to support Gigawatt.ai modernization initiatives by designing and building new z/OS-based services integrated with MACSS (legacy utility management mainframe application). This role focuses on exposing mainframe capabilities as modern APIs and enabling seamless enterprise integration. Key Responsibilities: Design, develop, and deploy RESTful APIs using IBM z/OS Connect Build and expose mainframe services (CICS, IMS, DB2) to distributed systems Integrate z/OS services with MACSS and other enterprise platforms Translate business requirements into scalable API-based solutions Ensure performance, security, and reliability of z/OS services Collaborate with cross-functional teams (middleware, integration, application teams) Troubleshoot and resolve issues across z/OS and API layers Support modernization initiatives by enabling API-driven mainframe access Requirements Strong hands-on experience with IBM z/OS Connect (EE preferred) Solid background in z/OS environment (CICS, IMS, DB2) Experience building and consuming REST APIs Knowledge of JSON, OpenAPI/Swagger Familiarity with mainframe integration patterns Strong debugging and performance tuning skills on z/OS Experience working in enterprise, high-availability environments Nice to Have: Experience with API management tools (e.g., IBM API Connect) Exposure to middleware/integration platforms Understanding of security protocols (OAuth, JWT, RACF) Prior experience with legacy system modernization initiatives

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