Mainframe Technical Support - Part-Time

This is an onsite position in Baltimore, MD

Maninframe Administrator

Key Responsibilities:

• Install, configure, and maintain IBM z/OS and related subsystems including VTAM, CICS, DB2, IMS, and MQ Series

• Provide technical support for a 24/7/365 mission-critical environment, ensuring high availability and system performance

• Conduct system and application troubleshooting, root cause analysis, and corrective actions

• Monitor and maintain mainframe network infrastructure, including VTAM configurations and protocols

• Support and manage job control (JCL) environments and batch processing systems

• Manage and troubleshoot system tools including:

o Rocket TMON (MVS, DB2, CICS, MQ)

o BMC Tools: AbendAid, FileAid, Xpediter, Control-M, etc.

o CA/Broadcom Tools: Top Secret (TSS), Librarian, Dynam TLMS, Solve Session Manager

o Levi, Ray & Shoup Print Utilities: VPS, DRS, VPS/IPDS

o ChicagoSoft QuickRef and JES2Mail Reporter/Splitter

• Implement and monitor security and access control measures using Top Secret (TSS)

• Manage storage systems and performance tuning of applications and subsystems

• Utilize mainframe automation tools to enhance operational efficiency and reduce manual intervention

• Coordinate with development, security, and network teams to ensure system integrity and alignment with enterprise goals

• Create and maintain detailed documentation including system configurations, standard operating procedures, and troubleshooting guides

• Participate in disaster recovery planning and system failover testing

• Respond to incidents and service desk tickets, providing timely resolutions and root cause analysis

• Work independently and as part of a collaborative technical team in a structured support environment

Required Qualifications:

• 10+ years of hands-on experience with IBM mainframe technologies, including:

o z/OS, JCL, CICS, DB2, IMS, MQ Series

• 10+ years of system programming experience with specialization in mainframe networking (e.g., VTAM)

• In-depth experience supporting mission-critical systems in a 24x7x365 environment

• Expertise with mainframe performance and diagnostic tools such as Rocket TMON and Xpediter

• Proficiency with BMC, CA/Broadcom, and LRS toolsets

• Knowledge of mainframe security protocols, access control (TSS), and compliance standards (CJIS/NIST)

• Strong understanding of mainframe automation and job scheduling using Control-M

• Excellent problem-solving and troubleshooting skills, particularly in high-pressure environments

• Effective written and verbal communication skills, including technical documentation

• Ability to manage multiple complex technical projects simultaneously

Preferred Qualifications:

• Experience with government, criminal justice, or public safety systems

• Familiarity with modernization and migration strategies for legacy mainframe applications

• Experience mentoring junior team members and supporting collaborative technical environments