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$35

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$62

How much do senior mainframe developer jobs pay per hour?

As of Jul 27, 2026, the average hourly pay for senior mainframe developer in Charleston, SC is $53.95, according to ZipRecruiter salary data. Most workers in this role earn between $50.62 and $58.94 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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Mainframe Systems Engineer, Senior

Mainframe Systems Engineer, Senior

Imagine One Technology & Management Ltd

Charleston, SC • On-site

Other

Medical, Dental, Vision, Retirement

Posted yesterday

Job description

Imagine One Technology & Management, Ltd. is seeking a Senior Mainframe Systems Engineer, contingent upon award of the associated work. This position will be based in Charleston, SC.

The Senior Mainframe Systems Engineer is responsible for analyzing, planning, designing, and documenting application installation and operations within z/OS-based mainframe Business Information Systems (BIS). This role leads infrastructure planning, application support, infrastructure analysis and assessment, and infrastructure testing and troubleshooting activities supporting enterprise Marine Corps pay and personnel systems.

Key Responsibilities:

  • Lead engineering and operational support of z/OS-based mainframe environments.
  • Analyze, plan, design, and document application installations and infrastructure changes.
  • Integrate COBOL/CICS applications into z/OS environments.
  • Perform infrastructure analysis, assessment, testing, and troubleshooting.
  • Support performance tuning and security configuration analysis.
  • Provide technical input to architecture documentation, SIAs, MOAs, and RFAs.
  • Support Risk Management Framework (RMF) / MCAAP-aligned engineering activities.
  • Develop operational and system-level architecture views.
  • Support production control, release management, and mainframe engineering activities as required.

Desired Experience:

  • 10+ years engineering and operating z/OS-based mainframe Business Information Systems.
  • 5+ years integrating COBOL/CICS applications into z/OS environments.
  • 2+ years engineering systems within MCAAP or other Risk Management Framework implementations.
  • Experience in concept exploration, requirements definition, systems design, integration testing, and evaluation within complex enterprise environments.
  • Experience developing operational and system-level architecture views.

Minimum Certifications:

  • IAT Level II baseline certification required.

Security Requirements:

  • U.S. Citizen.
  • Active Secret clearance required.

Imagine One offers a full package of benefits and competitive salary, excellent group medical, vision, and dental programs. 401K savings plan; $4K annual tuition reimbursement ($5K if pursuing master’s degree); employee training, development, and education programs; profit sharing; advancement opportunities; and much more!

ISO 9001:2015, ISO 20000-1:2018, ISO 27001:2022
CMMI Development and Services - Maturity Level 3
CMMC Level 2 (C3PAO)
An Employee-Owned Business

EEO/Vets/Disabled