• FNTS Senior Mainframe z / OS…

    First National Bank of Omaha (DE)
    …+ Occasional after hours and weekend support **The Ideal Candidate for This Role:** + z / OS Concepts (JES2, SDSF, TSO, RACF , HCD/IODF, SMP/E) + Communication ... all while keeping cost containment top-of-mind. With an elevated security posture consisting of layered security solutions,...HSM, DFDSS, VSAM, IDCAMS, ICF Catalogs) + z / OS Subsystems (JES2, WLM, OMVS/USS, SMF/RMF, RACF ,… more
    First National Bank of Omaha (09/09/25)
    - Related Jobs

  • Mainframe Security Engineer

    Ensono (Dover, DE)
    …Summary:** **This is a Mainframe Security Administration position, working on IBM z / OS operating systems. Experience using TSO, JCL, ISPF, JES2, and IBM ... Background Check is required for this position.** + Hands-on security administration experience with RACF , ACF2 and...IAM, MFA and PAM is desired. **General Knowledge:** + z / OS experience is highly desired + PC… more
    Ensono (09/20/25)
    - Related Jobs

  • Mainframe Applications Development Sr Programmer…

    Citigroup (New Castle, DE)
    …data. + **Sequential Files:** Knowledge of sequential file processing techniques. **Operating System:** + ** z / OS :** A solid understanding of the z / OS ... mainframe security concepts and best practices. This includes knowledge of RACF (Resource Access Control Facility) or other security systems. **Testing:** +… more
    Citigroup (08/01/25)
    - Related Jobs

  • Mainframe Network Engineer

    Travelers Insurance Company (Dover, DE)
    …aspects of the evaluation, configuration, security , implementation, and support of the z / OS operating system, RACF , disk/tape storage and subsystems, and ... certificate renewals, encryption key management and activation, as well as other z / OS supporting tools. + Evaluates systems specifications regarding customer… more
    Travelers Insurance Company (08/01/25)
    - Related Jobs