• Mainframe Assembler

    System One (Rockville, MD)
    Job Title: Mainframe Assembler Location: Rockville, Maryland Type: Contract Compensation:180k We are seeking a highly skilled and experienced Senior Mainframe ... existing systems and building new applications within a high-performance mainframe environment. Key Responsibilities: + Collaborate with cross-functional teams to… more
    System One (08/30/25)
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  • Mainframe Developer

    System One (Rockville, MD)
    …Contractor Work Model: Onsite ALTA IT Services is seeking a highly experienced Z/OS Mainframe Developer with deep expertise in Assembler , COBOL, and CICS. The ... Batch processing + TSO/ISPF + Extensive hands-on experience with Assembler , COBOL, and CICS in aZ/OS Mainframe ...with Assembler , COBOL, and CICS in aZ/OS Mainframe environment + Strong coding skills with proven adherence… more
    System One (09/03/25)
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  • Sr. Mainframe Automation Systems Programmer

    Ensono (Annapolis, MD)
    Sr. Mainframe Automation Systems ProgrammerRemote - United StatesJR012294 **Position Summary** As part of Mainframe Automation, this position will be part of a ... - Writing and documenting code + Programming languages: REXX, Assembler + Code hosting platforms for version control and...as Jira or Bugzilla (Scrum and Kanban Boards) + Mainframe Operating systems and their sub-components - z/OS, MVS… more
    Ensono (09/06/25)
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  • Senior Mainframe Systems Programmer - zVSE

    Ensono (Annapolis, MD)
    Senior Mainframe Systems Programmer - zVSERemote - United StatesJR012218 Position Summary The z/VSE Mainframe Systems Programmer will provide support for ... + Microsoft Office skills + Knowledge of application environments including RPG, COBOL, Assembler , and REXX + Experience with IBM Z hardware and general networking… more
    Ensono (08/19/25)
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  • Mainframe CICS Engineer/Subject Matter…

    Insight Global (Woodlawn, MD)
    …systems-level and application software using Common Business Oriented Language (COBOL), Assembler Language Code (ALC), or Java. Develop comprehensive test plans to ... experience. 8 years of experience providing technical experience with mainframe demand, capacity, and performance management. Ability to clearly communicate… more
    Insight Global (09/09/25)
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  • Mainframe (z/OS) MQ Systems Programmer…

    Broadridge Financial Solutions (Annapolis, MD)
    …preferred + Working knowledge of programming languages such as COBOL, REXX or Assembler preferred + Knowledge of external security interfaces such as TopSecret, RACF ... in relation to MQ preferred + Experience with MQ monitoring / support products preferred + Flexible to work on a hybrid or remote basis Compensation Range:The salary range for this position is between $140,000 - $160,000.Broadridge considers various factors… more
    Broadridge Financial Solutions (08/22/25)
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  • Principal Professional Services Consultant

    Rocket Software (Annapolis, MD)
    …Enterprise Developer, Enterprise Server, Server Express, Net Express + Any additional mainframe language or environment, such as REXX, Assembler , Natural, Adabas ... Suite Professional Services Team is looking for a highly skilled Mainframe Modernization Senior Consultant to provide technical support and/or leadership in… more
    Rocket Software (09/06/25)
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