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Mainframe Developer Jobs in Philadelphia, PA (NOW HIRING)

AceStack LLC

Mainframe Developer

Malvern, PA · On-site

$48 - $61.75/hr

Mainframe Developer Location - Malvern, PA Contract Job Summary: We are seeking an experienced Mainframe Developer with strong hands-on expertise in COBOL-based application development and ...

iTech US, Inc.

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61/hr

Mainframe Developer Location : Wilmington, DE Type : Contract Essential Skills: 10 years experience overall in Mainframe Experience in Mainframe COBOL,. Strong experience in CICS & MQ Excellent ...

RIT Solutions

Mainframe Developer

Wayne, PA · On-site

$44.50 - $57/hr

Mainframe Developer Design, develop, test, and maintain mainframe applications using COBOL, CICS, JCL, and DB2. Collaborate with business analysts and stakeholders to gather requirements and ...

Lorven Technologies

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61/hr

Mainframe Developer Location: Wilmington, Delaware (Onsite) Job Type: Contract Responsibilities: Primary Skill: VSAM, COBOL, DevOps * Design, code, test, and maintain mainframe applications using ...

Diverse Lynx

Mainframe Developer

Malvern, PA · On-site

$48 - $61.75/hr

Mainframe Developer- Lead Level Malvern, PA Mainframes, DB2, COBOL, Stored Procedures, Batch, JCL • Must have Prior Vanguard Experience Application development experience in Design, coding, testing ...

Lorven Technologies

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe Developer Location: Wilmington, Delaware (Onsite) Job Type: Contract Responsibilities: Primary Skill: VSAM, COBOL, DevOps * Design, code, test, and maintain mainframe applications using ...

VIS IT Solutions Inc

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe Developer - Day 1 Onsite Location: Wilmington, DE & Jersey City, NJ (Weekly 5 days office is Must) Duration: 12+ Months Contract Skills: COBOL, JCL, CICS, IMS DB, VSAM Key Responsibilities ...

Donato Technologies, Inc

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe Developer Wilmington DE Experience: 8+ Years All over USA Mandatory Skills- * COBOL, MQ, JCL, DB2, CICS, VSAM * Working on enterprise-wide applications, Agile methodologies Process Skills:

Zortech Solutions

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61/hr

Mainframe Developer Location: Wilmington, DE/Plano, TX/Columbus, OH (Day 1 Onsite) Duration: 6-12+ Months * Fully participates in development, testing, implementation, and support of mainframe COBOL ...

Hirekeyz Inc

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe Developer Location : Wilmington DE Job Type: Contract/W2 Experience: 8+ Years Mandatory Skills- COBOL, MQ, JCL, DB2, CICS, VSAM Working on enterprise-wide applications, Agile methodologies ...

Sincera Technologies, Inc.

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61/hr

Buffalo, NY or Willington, DE We are seeking an experienced Mainframe Developer with strong handson expertise in COBOL, JCL, and DB2 to support, enhance, and modernize enterprisescale mainframe ...

Hirekeyz Inc

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Mainframe Developer Location : Wilmington DE Job Type: W-2/Full Time Required Skills: • Mandatory Skills- COBOL, MQ, JCL, DB2, CICS, VSAM Working on enterprise-wide applications, Agile ...

Deloitte

Mainframe Developer

Philadelphia, PA · Hybrid

$49.50 - $63.50/hr

As an experienced Mainframe Developer ,you will have the ability to share new ideas and collaborate on projects as a consultant without the extensive demands of travel. The Project Delivery Talent ...

Xforia, Inc.

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61.25/hr

Job Title: Mainframe Developer Location : Wilmington DE Experience - 8+ - 5 Days Onsite MF JD: Mandatory Skills- COBOL, MQ, JCL, DB2, CICS, VSAM Working on enterprise-wide applications, Agile ...

RIT Solutions, Inc.

Mainframe Developer

Wayne, PA · On-site

$44.50 - $57/hr

Ensure compliance with coding standards and best practices for mainframe development. * Perform code reviews and provide mentorship to junior developers. * Create and maintain documentation for ...

E-Solutions

Mainframe Developer

Wilmington, DE · On-site

$47.50 - $61/hr

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

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All JobsMainframe Developer JobsMainframe Developer Jobs in Philadelphia, PA

Mainframe Developer information

See Philadelphia, PA salary details

$10

$53

$73

How much do mainframe developer jobs pay per hour?

As of Jun 28, 2026, the average hourly pay for mainframe developer in Philadelphia, PA is $53.86, according to ZipRecruiter salary data. Most workers in this role earn between $47.55 and $61.11 per hour, depending on experience, location, and employer.

What is the salary of a mainframe developer?

The salary of 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 security may earn higher compensation.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

Is mainframe hard to learn?

Mainframe development can be challenging for beginners due to its specialized programming languages like COBOL and its unique environment. However, with dedicated training and practice, many developers can acquire the necessary skills to work effectively on mainframe systems.

What are some common challenges Mainframe Developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

Is mainframe still in demand?

Mainframe developers are still in demand due to the continued reliance of many large organizations on mainframe systems for critical operations. Skills in COBOL, JCL, and mainframe security are valuable, and demand persists in industries like finance, insurance, and government. However, the overall number of roles is smaller compared to other modern development environments.

What are Mainframe Developers?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

What are the key skills and qualifications needed to thrive as a Mainframe Developer, and why are they important?

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.

Can mainframe be replaced by AI?

Mainframe developers work with large-scale, legacy systems that require specialized knowledge of mainframe environments, programming languages, and security protocols. While AI can automate certain tasks like code analysis and testing, it is unlikely to fully replace mainframe developers due to the complexity and critical nature of mainframe systems. Instead, AI tools are used to augment their work and improve efficiency.
What are the most commonly searched types of Mainframe Developer jobs in Philadelphia, PA? The most popular types of Mainframe Developer jobs in Philadelphia, PA are:
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What job categories do people searching Mainframe Developer jobs in Philadelphia, PA look for? The top searched job categories for Mainframe Developer jobs in Philadelphia, PA are:
What cities near Philadelphia, PA are hiring for Mainframe Developer jobs? Cities near Philadelphia, PA with the most Mainframe Developer job openings:
Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Philadelphia, PA as of June 2026, with employment types broken down into 58% Full Time, 38% Part Time, and 4% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $112,035 per year, or $53.9 per hour.
Mainframe Developer

Mainframe Developer

AceStack LLC

Malvern, PA • On-site

$48 - $61.75/hr

Other

Posted 12 days ago

Job description

Job Title: Mainframe Developer
Location - Malvern, PA
Contract
Job Summary:
We are seeking an experienced Mainframe Developer with strong hands-on expertise in COBOL-based application development and maintenance. The ideal candidate will have experience working in enterprise environments and supporting large-scale mainframe systems.
Key Responsibilities:
  • Design, develop, test, and maintain mainframe applications.
  • Work with COBOL, JCL, DB2, and CICS in batch and online environments.
  • Analyze business requirements and translate them into technical specifications.
  • Perform enhancements, debugging, and performance tuning.
  • Support production issues and provide timely resolution.
  • Participate in code reviews and maintain coding standards.
  • Collaborate with cross-functional teams including QA and Business Analysts.
AceStack logo

About AceStack

Sourced by ZipRecruiter

AceStack is a global IT consulting & Staffing agency. We deal in Health care (Nursing, Allied, Clinical/Non-clinical) Staffing, Engineering Staffing & I.T. Staffing. Founded in 2017 in New Jersey, AceStack has reported consistent growth and profit every year and carries zero debt. AceStack consultants are placed across USA, Canada, Mexico, and Asia. In addition to our headquarters in New Jersey – USA, we also have offices in Canada, Noida, and Ahmedabad. AceStack’s exceptionally high-touch service keeps our clients satisfied and our Consultants/Travelers engaged. We believe in investing in our Consultants/Clients in a variety of ways. We employ AceStack ambassador who helps guide Consultants through the on-boarding process and ensure the transition into their new role with our Client is seamless. We also have dedicated Consultant care representatives located throughout our organization who provide the same level of attention throughout our Consultant’s tenure. Due to this level of attention and care, AceStack enjoys not only one of the highest retention rates in the staffing industry but also one of the highest redeployment rates in the industry.

Company size

51 - 200 Employees

Headquarters location

NJ, US

Year founded

2017

Social media

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