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Mainframes Developer Jobs in Philadelphia, PA (NOW HIRING)

Hirekeyz Inc

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61.25/hr

Wilmington, DE ( 5 Day Onsite ) Duraction: Full Time Required Skills: • Programming Languages: Strong proficiency in COBOL • Mainframe Operating Systems: In-depth knowledge of z/OS • Database ...

K-Tek Resourcing LLC

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61/hr

Wilmington, DE Exp: 10+ Yrs RTTO - 5 Days Onsite Required Skills: • Programming Languages: Strong proficiency in COBOL • Mainframe Operating Systems: In-depth knowledge of z/OS • Database ...

Hirekeyz Inc

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61.25/hr

W-2/Full Time Required Skills: • Programming Languages: Strong proficiency in COBOL • Mainframe Operating Systems: In-depth knowledge of z/OS • Database Technologies: Expertise in IMS database ...

Xforia, Inc.

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61.25/hr

Jersey City NJ Experience - 8+ RTTO - 5 Days Onsite Required Skills: • Programming Languages: Strong proficiency in COBOL • Mainframe Operating Systems: In-depth knowledge of z/OS • Database ...

Lorven Technologies

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61.25/hr

Wilmington DE (5 Days Onsite) Contract/Fulltime Required Skills: ( Should be flexible for on call support) • Programming Languages: Strong proficiency in COBOL • Mainframe Operating Systems: In ...

Galent

Mainframe IMS and CICS

Wilmington, DE · On-site

$47.50 - $61/hr

Programming Languages: Strong proficiency in COBOL * Mainframe Operating Systems: In-depth knowledge of z/OS * Database Technologies: Expertise in IMS database concepts including IMS/DB and IMS/DC

Staffingine LLC

Mainframe IMS DB Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe IMS DB Developer Job Location: Wilmington, DE Job Type: Full-Time * Executes software solutions, design, development, and technical troubleshooting with ability to think beyond routine or ...

Accenture

Mainframe Specialist

Philadelphia, PA

$70K - $196K/yr

About the Role Are you a seasoned Mainframe Specialist with deep, hands-on command of COBOL, JCL ... Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ...

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Showing results 1-20

All JobsMainframes Developer JobsMainframes Developer Jobs in Philadelphia, PA

Mainframes Developer information

See Philadelphia, PA salary details

$48.4K

$112.9K

$167.5K

How much do mainframes developer jobs pay per year?

As of Jul 21, 2026, the average yearly pay for mainframes developer in Philadelphia, PA is $112,861.00, according to ZipRecruiter salary data. Most workers in this role earn between $90,800.00 and $131,200.00 per year, depending on experience, location, and employer.

Are mainframe engineers in demand?

Mainframes developers are in steady demand due to the continued use of mainframe systems in industries like finance, government, and healthcare. They require specialized skills in COBOL, JCL, and mainframe environments, and demand often depends on the organization's reliance on legacy systems. While some companies are transitioning to newer technologies, mainframe expertise remains valuable for maintaining critical infrastructure.

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. Skilled developers with expertise in COBOL, JCL, and mainframe environments tend to earn higher salaries, especially in industries like finance and government. Salaries may also vary based on the complexity of projects and the employer's size.

Is mainframe developer a good career?

Mainframe developers work with large-scale computer systems used by many organizations for critical applications. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL. As demand persists in industries such as finance and government, it can be a solid career choice for those with relevant skills and certifications.

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 focus on maintaining and optimizing these systems, often integrating AI tools to enhance performance but not replacing the hardware or fundamental role of mainframes in data processing. Skills in legacy systems, programming languages like COBOL, and system security remain essential for mainframe professionals.

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 Philadelphia, PA? For Mainframes Developer jobs in Philadelphia, PA, the most frequently searched job titles are:
What job categories do people searching Mainframes Developer jobs in Philadelphia, PA look for? The top searched job categories for Mainframes Developer jobs in Philadelphia, PA are:
What cities near Philadelphia, PA are hiring for Mainframes Developer jobs? Cities near Philadelphia, PA with the most Mainframes Developer job openings:
Mainframes Developer jobs near you
Infographic showing various Mainframes Developer job openings in Philadelphia, PA as of July 2026, with employment types broken down into 46% Full Time, and 54% Contract. Highlights an 86% In-person, 2% Hybrid, and 12% Remote job distribution, with an average salary of $112,861 per year, or $54.3 per hour.
Mainframe Assembler

Mainframe Assembler

Donato Technologies, Inc

Wilmington, DE • On-site

$60/hr

Contractor

Posted 5 days ago

Job description

RTTO – 5 Days Onsite

Job Description:


Design, coding, and testing: Mainframe assemblers are responsible for designing, coding, and testing application programs using the IBM Assembler language. They should also be familiar with the entire Software Development Life Cycle (SDLC) and have a solid understanding of mainframe operating systems, such as z/OS. 


Debugging and troubleshooting: They perform debugging and troubleshooting of mainframe applications to ensure they function correctly and efficiently. 


Documentation: Mainframe assemblers may also be responsible for documenting the design of the assembler programs, explaining how they work, and providing guidelines for their use. 

Technical support: They provide technical support for mainframe systems, optimizing performance, and ensuring compliance with coding standards and technical design. 

These assemblers work closely with system architects and analysts to understand the requirements and specifications of a system, and then translate these into efficient, low-level machine code. They must keep themselves updated with the latest mainframe technologies and assembler programming techniques to ensure the continuous functionality and reliability of mainframe systems. 

Donato Technologies Inc. is a trusted IT staffing, consulting, and software development partner headquartered in Dallas, Texas. We support clients across industries by understanding their unique business needs and delivering tailored technology and workforce solutions. Our focus is on connecting the right talent with the right opportunity-ensuring clients receive dependable, skilled professionals and candidates receive meaningful career growth and support. We work closely with small to mid-sized organizations to provide flexible, high-quality services that drive performance, innovation, and long-term success.