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ACS Consultancy Services, Inc.

ACS Consultancy Services, Inc.

via Dice

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Mainframe Systems Administrator (TSS, z/OS, JES2, TLS, JOBTRAC)

Anywhere
Full-time
Posted 1/13/2026
Verified Source
Key Skills:
Mainframe System Administration
Security Configuration (TSS, TLS, SSL)
Performance Monitoring

Compensation

Salary Range

$200K - 250K a year

Responsibilities

Administer, configure, and maintain z/OS systems ensuring stability, security, and performance, including security, storage, and system automation support.

Requirements

Requires hands-on experience with z/OS, TSS, JES2, TLS, and related mainframe tools, with additional knowledge of performance monitoring, scripting, and system management.

Full Description

Job Title: Mainframe Systems Administrator (TSS, z/OS, JES2, TLS, JOBTRAC) Location: TX (Remote ) We are currently seeking candidates who meet the following qualification Mandatory Qualifications • Hands-on experience with Top Secret Security (TSS) administration and configuration • Hands-on experience with z/OS system administration • Experience working with JES2, z/OS Unix System Services (OMVS), and Storage Management Subsystem (SMS) • Experience with TLS configuration, including certificates, SSL (RSA keys), SFTP, and FTPS Preferred Qualifications • Experience with performance monitoring and initial analysis of system performance issues • Experience with Informatica PowerExchange Administration • Working knowledge of z/OS Operations • Working knowledge of z/OS Networking, including VTAM and TCP/IP • Familiarity with z/OS job scheduling and management tools such as JOBTRAC • Experience with terminal emulator software (e.g., BlueZone) • Knowledge of VTAM session manager software (e.g., VTAM/SWITCH) • Working knowledge of SMP/E, RMF, SMF, and WLM • Proficiency with JCL, GRS, VSAM, and TSO • Experience with REXX scripting Responsibilities • Administer, configure, and maintain z/OS systems to ensure stability, performance, and security • Manage and support Top Secret Security (TSS) configurations and access controls • Support JES2 operations, USS/OMVS, and storage management activities • Configure and maintain secure communications using TLS, SSL certificates, SFTP, and FTPS • Monitor system performance, analyze issues, and recommend improvements • Support job scheduling, system automation, and operational workflows • Troubleshoot and resolve system, security, and performance-related issues • Collaborate with cross-functional teams to support enterprise mainframe operations • Maintain clear and accurate technical documentation • Follow organizational standards and best practices for system administration If you meet these qualifications, please submit your application via link provided in Linkedin. Kindly do not call the general line to submit your application.

This job posting was last updated on 1/15/2026

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