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Senior Mainframe Systems Programmer (z/OS-Network)

Remote, USA Full-time Posted 2026-06-18

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Job Title

Senior Mainframe Systems Programmer (z/OS-Network)

About your role:

In this role you will be responsible for the installation, configuration, maintenance, and administration of TCP/IP, VTAM Unix System Services and portions of z/OS.  You will also participate in Disaster Recovery exercises, support governance requirements and audits and work with capacity and performance teams in proactively addressing potential performance issues impacting service levels.

What you’ll do:

  • Install and maintain Connect:Direct (NDM), MSM and InterTest Batch utilizing SMP/E
  • Design and develop utilities (REXX) to streamline processes
  • Support a redundant TCPIP network for a Parallel Sysplex by making use of Dynamic VIPA and Sysplex Distributor and HiperSockets
  • Support non-shared USS file system in a Shared File system accessible by all LPARs within a Sysplex
  • Support and diagnose AT-TLS configurations
  • Troubleshoot started task abends utilizing IPCS
  • Apply Ciphers and license certificates
  • Resolving network connection issues utilizing packet traces

Experience you'll need to have:

  • 9+ years of experience with the z/OS mainframe communications experience
  • 7+ years of experience with TCP/IP, DNS, DHCP, and possess a deep understanding of core networking protocols as well has hands on Cisco routers and switches
  • 7+ years of experience configuring and managing secure data transmissions with firewalls and VPNs
  • 7+ years of experience with JCL, UNIX Shell, IBM system utilities, and network monitoring tools
  • Bachelor's degree in a related field or an equivalent combination of education, military, and work experience

Experience that would be great to have:

  • Cloud networking familiarity with hybrid cloud environments and Z integration
  • Experience in the financial services industry or other highly regulated industries

How you'll work:

  • This role requires being on-call during non-standard and/or overnight hours on a rotational basis
  • This role requires use of a computer and audio equipment

#zOS

#IBM

#WeAreMainframe

#SystemsProgramming #IBM

Salary Range

$109,000.00-$152,000.00

These pay ranges apply to employees in Minnesota. Pay ranges for employees in other states may differ.

It is unlawful to discriminate against a prospective employee due to the individual's status as a veteran.

Thank you for considering employment with Fiserv.  Please:

  • Apply using your legal name
  • Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Equal Opportunity:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law. 

If you have a disability and require a reasonable accommodation in completing a job application or otherwise participating in the overall hiring process, please contact [email protected]. Please note our AskHR representatives do not have visibility to your application status. Current associates who require a workplace accommodation should refer to Fiserv’s Disability Accommodation Policy for additional information.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.

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