Mainframe System Maintenance & Administration Engineer

Princeton IT Services, Inc; New York (NY); On-site; USD 100,000 - 130,000; Part time

Job summary

Princeton IT Services, Inc is seeking a Mainframe System Maintenance & Administration Engineer in New York, NY. This role involves managing and supporting enterprise mainframe environments, ensuring system availability, and optimizing performance. Candidates should have a Bachelor's degree, over 5 years in mainframe support, and knowledge of solid tools including z/OS and JCL. Strong analytical skills and experience with RACF security are essential. Join us in a dynamic environment where you'll work on crucial business applications.

Qualifications

• 5+ years of experience in mainframe system administration or support.
• Strong knowledge of z/OS operating system.
• Hands-on experience with JCL and mainframe utilities.
• Experience with job scheduling tools (Control-M, CA-7).
• Knowledge of RACF or equivalent security tools.

Responsibilities

• Perform day-to-day administration and maintenance of mainframe systems (z/OS).
• Monitor system performance, capacity, and availability; optimize performance.
• Execute system upgrades, apply patches, and maintain system software.
• Manage and troubleshoot batch jobs using scheduling tools.
• Administer security through RACF, including user access control.

Skills

Mainframe System Administration

z/OS Maintenance & Support

JCL & REXX

Performance Monitoring & Tuning

RACF Security Administration

Batch Processing & Scheduling

Incident & Problem Management

Education

Bachelor’s degree in Computer Science, IT, or a related field

Tools

Control-M

CA-7

OMEGAMON

RMF

Job description

Job Title: Mainframe System Maintenance & Administration Engineer

Location: New York, NY

Employment Type: Contract

Job Summary

We are looking for a skilled Mainframe System Maintenance & Administration Engineer to manage and support enterprise mainframe environments. The role involves ensuring system availability, performance optimization, security compliance, and smooth execution of batch and online workloads in a z/OS environment.

Key Responsibilities

• Perform day-to-day administration and maintenance of mainframe systems (z/OS)
• Monitor system performance, capacity, and availability; take proactive measures to optimize performance
• Execute system upgrades, apply patches (PTFs), and maintain system software
• Manage and troubleshoot batch jobs using scheduling tools like Control-M or CA-7
• Handle dataset allocation, storage management, and backup/recovery processes
• Administer security through RACF, including user access control and auditing
• Support and maintain core subsystems such as CICS, DB2, and IMS
• Diagnose and resolve system issues, abends, and performance bottlenecks
• Develop and maintain JCL and REXX scripts for automation and job processing
• Participate in disaster recovery planning, testing, and execution
• Maintain documentation for system configurations, procedures, and processes
• Collaborate with cross-functional teams to support business-critical applications

Required Qualifications

• Bachelor’s degree in Computer Science, IT, or a related field
• 5+ years of experience in mainframe system administration or support
• Strong knowledge of z/OS operating system
• Hands‑on experience with JCL and mainframe utilities
• Experience with job scheduling tools (Control‑M, CA‑7)
• Knowledge of RACF or equivalent security tools
• Familiarity with CICS, DB2, or IMS environments
• Strong analytical and troubleshooting skills

Preferred Qualifications

• Experience with REXX scripting or automation tools
• Knowledge of system monitoring tools (OMEGAMON, RMF)
• Exposure to disaster recovery and high availability environments
• IBM Mainframe certifications are a plus

Key Skills

• Mainframe System Administration
• z/OS Maintenance & Support
• JCL & REXX
• Performance Monitoring & Tuning
• RACF Security Administration
• Batch Processing & Scheduling
• Incident & Problem Management