1

Mainframes Developer Jobs in Ohio (NOW HIRING)

Mainframe Developer

Columbus, OH · On-site

$47.25 - $60.75/hr

Keylent Inc is seeking a Mainframe Developer to join their team. The role involves working with technologies such as Cobol, IMS, JCL, DB2, and CICS to develop and maintain mainframe applications.

Mainframe Developer - Onsite

Columbus, OH · On-site

$47.25 - $60.75/hr

Mainframe Developer Work Location: Columbus, OH Duration: Longterm * 8 to 10 Yrs of experience in the Mainframe & Java Modernization space. * The Candidate has experience in understanding the ...

Mainframe Developer

Columbus, OH · On-site

$47.25 - $60.75/hr

Mainframe Developer Location: Columbus OH / Jersey City MF JD: Languages/Databases: COBOL, CICS/DB2, IMS, JCL, VSAM Tools: VSAM, Sync Sort, Change Man, Zeke, File Aid, SAR, NDM, SFTP, Xpeditor, MQ ...

Mainframe developer

Delaware, OH · On-site

$46.50 - $59.75/hr

CTS - JPMC Mainframe developer Delaware (onsite) - 5 days Looking for someone who can self-run, engage with the client and is proactive. Client interview roles so need someone experienced and well ...

Sogeti/ Safelite Auto Mainframe developer Columbus OH 3 days office 10 months $55/hr w2 without benefits 62/hr c2c (own corp) Monthly invoicing Net 45 payment each invoice core skills -strong skills ...

Mainframe Developer at Columbus, OH

Columbus, OH · On-site

$47.25 - $60.75/hr

Mainframe Developer Location: Columbus, OH Madatory Skill: CICS, COBOL, JCL, VSAM, MQ JD: Languages/Databases: COBOL, CICS/DB2, IMS, JCL, VSAM Tools: VSAM, Sync Sort, Change Man, Zeke, File Aid, SAR ...

Mainframe Engineer

Dublin, OH · On-site

$50 - $60/hr

Our client is currently seeking a Mainframe Engineer THIS POSITION IS ONSITE 4 DAYS A WEEK. 100% REMOTE WILL NOT BE CONSIDERED. Key Responsibilities * Design, develop, test, and maintain mainframe ...

... mainframe environment. - Participate actively in Agile ceremonies, contributing to sprint planning, refinement, and retrospectives. - Collaborate cross-functionally with engineering teams to ensure ...

New

Mainframe Assembler Developer

Port William, OH · On-site

$43.50 - $56/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Highland, OH · On-site

$45.50 - $58.50/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Midland, OH

$44.50 - $57.25/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

New Vienna, OH

$44.25 - $56.75/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Sabina, OH · On-site

$47.25 - $60.75/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Waynesville, OH · On-site

$44 - $56.50/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Sabina, OH · On-site

$47.25 - $60.75/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Blanchester, OH · On-site

$43.50 - $56/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

Mainframe Assembler Developer

Martinsville, OH · On-site

$44 - $56.50/hr

We are seeking an experienced Mainframe Assembler Developer with strong expertise in IBM Assembler programming and mainframe environments. The ideal candidate will be responsible for designing ...

next page

Showing results 1-20

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.

Is a mainframes developer a good career?

A mainframes developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy systems and mainframe programming languages like COBOL. However, it requires specific skills and certifications, and the field may have limited growth compared to emerging technologies.

Is a mainframes developer still in demand?

Mainframes developers are still in demand in industries such as finance, government, and healthcare that rely on legacy systems. They typically work with COBOL, JCL, and mainframe environments, and demand persists due to the ongoing need to maintain and upgrade existing mainframe applications. However, the number of new positions is limited compared to emerging technologies, and skills in mainframe modernization are increasingly valued.

What does a mainframes developer do?

A mainframes developer designs, codes, tests, and maintains applications running on mainframe computers, often using languages like COBOL, PL/I, or Assembler. They ensure the stability, security, and efficiency of large-scale enterprise systems, frequently working with legacy code and mainframe-specific tools in a structured environment.

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:

What cities in Ohio are hiring for Mainframes Developer jobs?

Cities in Ohio with the most Mainframes Developer job openings:

Infographic showing various Mainframes Developer job openings in Ohio as of August 2026, with employment types broken down into 85% Full Time, 2% Part Time, and 13% Contract. Highlights an 80% Physical, 6% Hybrid, and 14% Remote job distribution.

Mainframe Developer

Keylent Inc

Columbus, OH • On-site

$47.25 - $60.75/hr

Full-time

Re-posted 22 days ago


Job description

Job Summary:
Keylent Inc is seeking a Mainframe Developer to join their team. The role involves working with technologies such as Cobol, IMS, JCL, DB2, and CICS to develop and maintain mainframe applications.
Qualifications:
Required:
• Cobol
• IMS
• JCL
• DB2
• CICS
Company:
Keylent provides Software Development Services in the Cloud, Analytics and Digital Transformation space. Founded in 2010, the company is headquartered in Wilmington, USA, with a team of 201-500 employees. The company is currently Growth Stage.

Keylent logo

About Keylent

Sourced by ZipRecruiter

Keylent Inc, based in Wilmington, DE, US, operates in the dynamic IT services and solutions industry. Their official platform, keylent.com, further details their robust suite of services which primarily comprise software consulting, quality assurance, project management, and business intelligence. Keylent Inc has been an integral part of the industry since its inception, serving diverse clients with their specialized, innovative IT solutions. This customer-centric firm is founded on the core values of reliability, integrity, and zealous innovation. Their mission is to empower businesses in navigating the complex technological landscape with ease, efficiency, and confidence. Notably, Keylent Inc has been recognized for its commitment to exceptional service delivery and the profound impact of its solutions in facilitating business growth.

Industry

Internet and it

Company size

11 - 50 Employees

Headquarters location

Wilmington, DE, US

Year founded

2010

Social media