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Freelance Mainframe Software Engineer Jobs (NOW HIRING)

Broadcom

Mainframe Software Development Engineer

Lisle, IL · On-site

$48.25 - $62.25/hr

Broadcom is looking for experienced Software Engineers to produce and implement functional software solutions for delivery to customers. This role involves development on existing mainframe-based ...

My3Tech Inc

Mainframe Developer

$50.25 - $64.50/hr

Mainframe Developer Location: Remote working PST hours- San Jose, CA Long term contract Interview ... The Senior Software Engineer - Communications is the principal IBM and 3rd party software product ...

Syntricate Technologies

Mainframe Engineer SME

$50.25 - $64.50/hr

Mainframe Engineer Sme Location: Costa Mesa, CA or Allen, TX or remote. Fulltime only Experience ... with mainframe software development tools and platforms (z/OS, z/VM, z/Linux, IBM System z) · ...

Keylent Inc

Z/OS Mainframe Systems Programmer

Gwynn Oak, MD · On-site

$57.25 - $73/hr

Z/OS Mainframe Systems Programmer Location: Woodlawn, MD Duration: Long Term Education / Experience ... Designs extensions and enhancements to mainframe operating systems software to support current ...

Hired By Matrix

Mainframe Engineer

Livingston, NJ · On-site

$53.50 - $68.75/hr

Company Description This position is a critical member of the Mainframe Engineering team. The ... Initiate z/OS environmental set-up to support all Mainframe software products. * Provide technical ...

Omni Inclusive

Mainframe Developer

Edison, NJ · On-site

$49.75 - $63.75/hr

... software development and maintenance. 8. Conduct performance tuning and capacity planning for mainframe resources. Skill Requirements 1. Proficiency in mainframe cobol programming language. 2. Strong ...

Hired By Matrix

Mainframe Engineer

Livingston, NJ

$53.50 - $68.75/hr

This position is a critical member of the Mainframe Engineering team. The primary function is ... Initiate z/OS environmental set-up to support all Mainframe software products. * Provide technical ...

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How much do freelance mainframe software engineer jobs pay per hour?

As of Jul 1, 2026, the average hourly pay for freelance mainframe software engineer in the United States is $53.38, according to ZipRecruiter salary data. Most workers in this role earn between $47.12 and $60.58 per hour, depending on experience, location, and employer.
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Mainframe Application Engineer, Senior

Mainframe Application Engineer, Senior

Imagine One Technology & Management Ltd

Charleston, SC • On-site

Other

Medical, Dental, Vision, Retirement

Posted 5 days ago

Job description

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

The Senior Mainframe Application Engineer is responsible for analyzing, planning, designing, and documenting changes to mainframe software applications written in COBOL that execute in batch or online CICS environments within a z/OS-based Business Information System (BIS). The engineer formulates or updates BIS architectures and assists mainframe software sustainment teams with implementation and testing of system changes supporting Marine Corps enterprise pay and personnel systems.

Key Responsibilities:

  • Analyze, design, and document updates to COBOL-based mainframe applications.
  • Implement changes to batch and CICS-based applications within z/OS environments.
  • Formulate and update Business Information System architectures.
  • Support implementation, integration, and testing of application changes.
  • Engineer enterprise-scale pay and personnel business rule logic updates.
  • Support RMF/MCAAP-aligned engineering activities.
  • Develop operational and system-level architecture views.
  • Collaborate with sustainment and production control teams to support releases.

Desired Experience:

  • 6+ years engineering enterprise-scale mainframe software applications.
  • 6+ years implementing and updating DoD pay and personnel business rule logic.
  • 4+ years engineering systems within MCAAP or other Risk Management Framework implementations.
  • 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