• 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 (09/25/25)
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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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  • z/OS Mainframe Systems Programmer

    System One (Bethesda, MD)
    z/OS Mainframe Systems Programmer Location: Remote (must be in US / EST Hours) Pay Rate: $60-$68/h w/ conversion salary of 125k Public Trust Required ... Responsibilities: DMI, LLC is seeking az/OS Mainframe Systems Programmer to join us. The z/OS ...to z17. + Proficiency in COBOL (v6.2, v5.2, v4.2), Assembler , and REXX for utilities and automation. + Strong… more
    System One (10/07/25)
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  • Sr. Mainframe Automation Systems Programmer

    Ensono (Washington, DC)
    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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  • Principal Professional Services Consultant

    Rocket Software (Washington, DC)
    …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 (10/10/25)
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  • Senior Release Management Engineer-12064-Hybrid

    Shuvel Digital (Vienna, VA)
    …+ Application development Nice to Have Experience With: + IBM Mainframe (z Series) configuration items including data, applications and infrastructure: COBOL, ... CICS, Assembler , REXX, JCL, FileAid, AbendAid, Strobe and SysView; + Reporting: Crystal Reports and Cognos + WebSphere Engineering and Administration… more
    Shuvel Digital (09/25/25)
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  • Professional Services III- Amz24280.1

    Amazon (Herndon, VA)
    …and/or distributed application architecture; and (5) hands-on technical experience with mainframe , non-x86 legacy systems and with technologies such as COBOL, JCL, ... CICS, DB2 for z/OS, Assembler , PL/I, Java, REXX, flat/sequential files, GDGs, or VSAM. Preferred Qualifications All applicants must meet all the above listed… more
    Amazon (09/05/25)
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