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Senior Mainframe Developer Jobs (NOW HIRING)

Serigor

Senior Mainframe Developer

Columbia, MD · Hybrid

Senior Mainframe Developer Location: Columbia, MD Job Type: Full-Time Position Overview We are seeking a Senior Mainframe Developer to support enterprise modernization and transformation initiatives ...

CAI

Senior Mainframe Developer

Trenton, NJ

$80 - $90/hr

Senior Mainframe Developer Req number: R7667 Employment type: Full time Worksite flexibility: Onsite Who we are CAI is a global services firm with over 9,000 associates worldwide and a yearly revenue ...

Hirekeyz Inc

Senior Mainframe Developer

Tampa, FL · On-site

Job Title: Senior Mainframe Developer Location : Tampa, FL (5 Days Onsite) Job Type: W-2/Full Time Exp-10 Years Role Overview We are seeking a highly experienced Mainframe Developer with deep ...

Palnar

Sr. Mainframe Developer

Jersey City, NJ · On-site

$53.75 - $69/hr

Job Role: Sr. Mainframe Developer Location: Jersey City, NJ Duration Long Term * Minimum of 10 years' experience with COBOL, DB2, Command-Level CICS, JCL, Batch and TSO/ISPF. * Similar experience ...

JS Consulting

Sr. Mainframe Developer

Woodlawn, MD · On-site

$51 - $65.50/hr

Job Title- Sr. Mainframe Developer Project Location - Woodlawn, MD (5 days per week onsite) Duration- 6+ months contract Skills: Strong experience with IBM z/OS (OS/390/MVS) environment developing ...

NAVA Software Solutions

Mainframe Developer

Morristown, NJ · On-site

$50.50 - $64.75/hr

Role: Sr. Mainframe Engineer Location: Morris Plains, NJ , Memphis TN, Somerset NJ, Austin TX, St. Louis MO, Morristown NJ Remote to start - Hybrid from Nov onwards Duration: 6-12 months What You ...

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How much do senior mainframe developer jobs pay per hour?

As of Jun 5, 2026, the average hourly pay for senior mainframe developer in the United States is $57.65, according to ZipRecruiter salary data. Most workers in this role earn between $54.09 and $62.98 per hour, depending on experience, location, and employer.

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

To thrive as a Senior Mainframe Developer, you need deep expertise in mainframe programming languages (like COBOL, JCL, and PL/I), systems analysis, and a strong understanding of legacy application architectures, typically supported by a degree in computer science or related experience. Familiarity with tools such as IBM z/OS, DB2, CICS, and version control systems is essential, along with relevant certifications like IBM Certified System Programmer. Excellent problem-solving, communication, and leadership skills help you collaborate effectively and mentor junior developers. These skills are crucial for maintaining mission-critical systems, ensuring reliability, and guiding modernization efforts in complex enterprise environments.

What are some common challenges faced by Senior Mainframe Developers when integrating legacy systems with modern technologies?

Senior Mainframe Developers often encounter challenges when integrating legacy mainframe systems with newer technologies such as cloud platforms, APIs, or microservices. These challenges include ensuring data consistency, maintaining system security, and minimizing downtime during migrations. Collaboration with cross-functional teams, such as infrastructure engineers and application developers, is key to developing seamless integration solutions. Staying up-to-date with modernization tools and best practices can help address these complexities and support the organization's digital transformation goals.

What are Senior Mainframe Developers?

Senior Mainframe Developers are experienced professionals who design, develop, and maintain mainframe systems—large-scale computers used by organizations for critical applications, bulk data processing, and enterprise resource planning. They are proficient in languages like COBOL, JCL, and Assembler, and often work with databases and transaction processing systems. Their responsibilities include troubleshooting system issues, optimizing performance, mentoring junior developers, and ensuring the reliability and security of mainframe operations.
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Senior Mainframe Developer jobs near you
Infographic showing various Senior Mainframe Developer job openings in the United States as of May 2026, with employment types broken down into 94% Full Time, 4% Part Time, and 2% Temporary. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $119,916 per year, or $57.7 per hour.
Senior Mainframe Developer

Senior Mainframe Developer

Programmers.io

Alpharetta, GA • On-site

Contractor

Posted 29 days ago

Job description

Role Descriptions: Senior Mainframe Developer . Strong Technical Skills in COBOL| JCL | CICS and DB2.Candidate is required to Design |Code | test and implement changes | also involve in other phases of Software development. The candidate should also be able code python components. The candidate will also participate in technical | architectural and design discussions with other teams . The candidate should be flexible | highly adaptable| and excellent team player. The candidate should work in in a global virtual team along with NY team members and members located in India. Primary Skillset Cobol | Jcl | Db2| Cics| Python

Essential Skills: Senior Mainframe Developer . Strong Technical Skills in COBOL| JCL | CICS and DB2.Candidate is required to Design |Code | test and implement changes | also involve in other phases of Software development. The candidate should also be able code python components. The candidate will also participate in technical | architectural and design discussions with other teams . The candidate should be flexible | highly adaptable| and excellent team player. The candidate should work in in a global virtual team along with NY team members and members located in India. Primary Skillset Cobol | Jcl | Db2| Cics| Python

Desirable Skills:

Keyword:

Skills: Mainframe DB2 - Application Development~System Z - Enterprise COBOL

Experience Required: 8-10

Comments for Suppliers:      LOCAL ONLY FOR ONSITE CLIENT EVAL