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Freelance Mainframe Software Engineer Jobs (NOW HIRING)

3B Staffing LLC

Mainframe- Cobol Developer

San Antonio, TX · Remote

$44.50 - $57.25/hr

Mainframe- Cobol Developer Description: We have a remote, 18 month contract opportunity for a ... Software Engineer / Application Developer to maintain and enhance both new and existing software ...

New

3B Staffing LLC

Mainframe- Cobol Developer

San Antonio, TX · Remote

$44.50 - $57.25/hr

Mainframe- Cobol Developer Description: We have a remote, 18 month contract opportunity for a ... Software Engineer / Application Developer to maintain and enhance both new and existing software ...

New

M&T Bank

Senior Software Engineer - Mainframe

Buffalo, NY · On-site

$118K - $156K/yr

Overview Responsible at the expert level for mainframe software engineering, technical solution delivery, and technical requirements definition. Serves as an individual-contributor technical lead for ...

M&T Bank

Senior Software Engineer - Mainframe

Buffalo, NY · Remote

$118K - $156K/yr

Overview Responsible at the expert level for mainframe software engineering, technical solution delivery, and technical requirements definition. Serves as an individual-contributor technical lead for ...

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 ...

FIS

Mainframe Software Engineer Lead

Atlanta, GA · Hybrid

Mainframe, CICS, DB2, IMS, File Manager * Are able to collaborate openly within a mixed team of ... Assists with on-the-job training and provides in-depth expertise and advice to software engineers.

B Capital

Mainframe Software Engineer Lead

Columbus, GA · On-site

$95 - $150/hr

Mainframe, CICS, DB2, IMS, File Manager * Are able to collaborate openly within a mixed team of ... Assists with on-the-job training and provides in-depth expertise and advice to software engineers ...

Hired By Matrix

Mainframe Engineer

Livingston, NJ · On-site

$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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Freelance Mainframe Software Engineer information

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

As of Aug 13, 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.

What is a freelance mainframe software engineer's salary?

A freelance mainframe software engineer's salary varies based on experience, project scope, and location, but typically ranges from $50 to $150 per hour. Experienced professionals with skills in COBOL, JCL, and mainframe environments can command higher rates, especially for specialized or long-term projects.

Are freelance mainframe software engineers in demand?

Freelance mainframe software engineers are in steady demand due to ongoing reliance on legacy systems in industries like finance and government. Skills in COBOL, JCL, and mainframe environments are valuable, especially for short-term projects or system maintenance. The demand is influenced by the need for specialized expertise in maintaining critical mainframe infrastructure.
What cities are hiring for Freelance Mainframe Software Engineer jobs? Cities with the most Freelance Mainframe Software Engineer job openings:
What are the most commonly searched types of Mainframe Software Engineer jobs? The most popular types of Mainframe Software Engineer jobs are:
What states have the most Freelance Mainframe Software Engineer jobs? States with the most job openings for Freelance Mainframe Software Engineer jobs include:
Freelance Mainframe Software Engineer jobs near you

Mainframe Application Engineer, Senior

Imagine One Technology & Management Ltd

Charleston, SC • On-site

Other

Medical, Dental, Vision, Retirement

Re-posted 18 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 Software AG Natural and ADABAS that execute in batch or online CICS environments within a z/OS-based environment. The engineer formulates or updates Business Information System (BIS) architectures and assists mainframe software developers with the implementation and testing of architectures supporting the Standard Accounting, Budgeting, and Reporting System (SABRS).

Key Responsibilities:

  • Analyze, design, and document updates to Natural/ADABAS-based mainframe applications.
  • Implement changes within batch and CICS environments in a z/OS mainframe environment.
  • Translate DoD accounting, budgeting, and reporting business rule logic into secure system designs and code.
  • Support Programming Production Trouble Reports (PTRs) and sustainment changes.
  • Perform unit testing and participate in peer reviews.
  • Develop and update system architecture documentation and logical design views.
  • Support operational test activities and document discrepancies via Jira.
  • Provide engineering support aligned with MCAAP or other Risk Management Framework implementations.
  • Assist sustainment teams with implementation and test of architectural changes.

Desired Experience:

  • 6+ years engineering enterprise-scale mainframe software applications.
  • 6+ years implementing and updating DoD accounting, budgeting, and reporting business rule logic.
  • 4+ years engineering systems within MCAAP or other Risk Management Framework implementations.
  • Experience developing operational and system-level architecture views.
  • Experience supporting Software AG Natural and ADABASE applications executing in batch or online CICS environments within z/OS.

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