Lead IBM Mainframe System Administrator

Data Intelligence LLC; Missouri; On-site; USD 100,000 - 135,000; Full time

Job summary

Data Intelligence LLC is seeking a Lead System Administrator to oversee IBM z/OS mainframe environments in St. Louis, MO. The position requires 7+ years in system administration with leadership skills, managing mainframe software and operational practices, and offers competitive salaries and comprehensive benefits.

Benefits

Medical, dental and vision insurance

401k

PTO and 11 paid holidays

Qualifications

• 7+ years of experience in mainframe system administration, especially IBM z/OS.
• Deep knowledge of CA ENDEVOR, DB2, CICS, and IDMS.
• Experience with system automation and job scheduling.

Responsibilities

• Lead the administration and support of IBM z/OS systems.
• Manage mainframe software including CA ENDEVOR, DB2, and CICS.
• Oversee system upgrades and performance tuning.

Skills

Leadership

Problem-Solving

Communication

Tools

CA ENDEVOR

DB2

CICS

IDMS

WebSphere

Job description

Data Intelligence, LLC (DI) is searching for a Lead System Administrator – IBM Mainframe Administrator in St. Louis, MO. The Lead IBM System Administrator will oversee the administration, configuration, and optimization of a complex IBM z/OS mainframe environment. This role requires deep expertise in mainframe infrastructure, system software, and operational tools, with leadership responsibilities for managing system performance, availability, and security. Familiarity with a broad range of mainframe software—including CA ENDEVOR, DB2, CICS, and VA Java OS/390 V2 Compiler—is essential.

**This position is contingent upon award of contract **

Responsibilities:

• Lead the administration and support of IBM z/OS systems, ensuring high availability and performance.
• Manage and maintain a diverse suite of mainframe software including:
  • CA ENDEVOR, Easytrieve, IDMS, DB2, CICS, WebSphere, and WebFOCUS
  • Pitney Bowes document and mail management tools
  • Connect:Direct, Hourglass, Smartcrypt, and other system utilities
• Oversee system upgrades, patching, and configuration management.
• Provide leadership in system monitoring, capacity planning, and performance tuning.
• Collaborate with application developers, database administrators, and security teams to ensure seamless operations.
• Support hybrid environments involving VA Java OS/390 V2 Compiler and Java-based components.
• Maintain system documentation, enforce operational standards, and ensure compliance with federal IT policies.
• Mentor junior system administrators and provide escalation support for complex issues.

Required Skills/Experience:

• 7+ years of experience in mainframe system administration, including IBM z/OS.
• Deep knowledge of mainframe tools such as CA ENDEVOR, DB2, CICS, and IDMS.
• Experience with system automation, job scheduling, and performance monitoring.
• Familiarity with VA Java OS/390 V2 Compiler and Java integration in mainframe environments.
• Strong leadership, communication, and problem-solving skills.

Preferred Experience:

• Experience with WebSphere, MailStream Plus, and Pitney Bowes tools.
• Knowledge of PSF, GDDM, XL C/C++, and batch-to-CICS integration.
• Background in federal or public sector IT environments, especially USDA systems.

Data Intelligence, DI is an established small business that has supported the critical missions of our government clients since 2005. We provide full life cycle system development, systems engineering, cybersecurity, and supporting analytical and logistics support to C4ISR and other complex systems. We are an equal opportunity employer that offers competitive salaries, comprehensive benefits, a team-oriented environment, and opportunities for advancement. Our excellent employee retention record reflects our employee focus. We work with Veteran’s organization to proactively hire those who have served our country. We offer medical, dental and vision insurance, 401k, PTO and 11 paid holidays.

Data Intelligence is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, age, color, religion, creed, sex, sexual orientation, gender identity, national origin, disability, or protected Veteran status.