Mainframe Services SME

Clearance Level
Top Secret
Systems Engineering
Arlington, Virginia
Onsite Workplace
Key Skills For Success

IBM Mainframes

Mainframe Computers

Operating Systems (OS)

REQ#: RQ147563
Public Trust: None
Requisition Type: Pipeline
Your Impact

Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of Defense’s mission to keep our country safe and secure.

Job Description

Mainframe Services SME

Deliver simple solutions to complex problems as a Mainframe Services SME at GDIT. Here, you’ll tailor cutting-edge solutions to the unique requirements of our clients. With a career in application development, you’ll make the end user’s experience your priority and we’ll make your career growth ours.

At GDIT, people are our differentiator. As a Mainframe Services SME you will help ensure today is safe and tomorrow is smarter. Our work depends on Mainframe Services SME joining our team to:

The Mainframe Services SME shall provide technical ability in the architecture, deployment, and sustainment of the mainframe architecture and various applications supported on the infrastructure. This position requires demonstrated direct experience with a variety of z/VM and z/OS hardware and software within the environment as described within this PWS.

Education Requirement: Bachelor's in Science degree in Computer Engineering, Computer Information Systems, Telecommunications, or Management Information Systems, in addition 5 recent years of documented experience relevant to this key position.

Minimum Qualifications:

Experience in generation and maintenance of system engineering and technical architecture documentation.

Experience in generating and maintaining requirements, testing and evaluating possible future technical architectures, analyzing and resolving complex system issues, leading and/or participating in architecture reviews and providing technical guidance based upon expertise.

Strong working knowledge of large, complex IT mainframe systems.

Experience and technical capabilities in z/OS environments running Job Entry Subsystem 2 (JES2), System Display and Search Facility (SDSF), Time Sharing Option (TSO) TSO/Interactive System Productivity Facility (ISPF), Access Control Facility (ACF2), Customer Information Control System (CICS), and DB2 in a multiple CPU environment.

Systems programming experience in IBM z/VM.

System administration experience in z/Linux operating systems such as RedHat and SuSe in IBM z/VM hypervisor.

Knowledge working with current IBM mainframe hardware platforms, such as z9, z10, z196 and zBC12.

Expert knowledge and experience with count-key DASD storage systems, specifically EMC VMAX systems to include Business Continuance Volume (BCV), Timefinder, and Symmetrix Remote Data Facility (SRDF) functions.

Expert knowledge and experience with robotic tape libraries including SL-8500, SL- 3000, StorageTek (STK)/Sun/Oracle Virtual Storage Manager (VSM) and T10ktape drives.

Thorough knowledge of TSO/ISPF, System Modification Program/Extended (SMP/E), IBM and IBM-related utility programs [i.e. IDCAMS, IEBCOPY, Fast Dump Restore (FDR), Data Facility Data Set Services (DFDSS), z/OS file structures, Integrated Catalog Facility (ICF) Catalogs, Virtual Storage Access Method (VSAM) and zFS file systems.

Experience with configuration and management of IBM’s Communication Server IP and its subcomponents (TN3270, FTP, SYSLOGD, Policy Agent, InfoPrint Server, SMTP, SNMP, OMPROUTE, etc).

Knowledge and experience with z/OS network monitoring software such as NETVIEW, Williams Data Systems IMPLEX, Exigence, and FTP Alert.

Experience with configuration and management of communications server VTAM and its subcomponent features (Enterprise Extender and Advanced Peer to Peer Network (APPN).

Expert knowledge of mainframe open systems adapters in z/OS and z/VM environments.

IAT-II certification

Security Clearance Level: Top Secret
Location: On Customer Site


● Full-flex work week to own your priorities at work and at home
● 401K with company match
● Comprehensive health and wellness packages
● Internal mobility team dedicated to helping you own your career
● Professional growth opportunities including paid education and certifications
● Cutting-edge technology you can learn from
● Rest and recharge with paid vacation and holiday’s

Work Requirements
Years of Experience

5 + years of related experience

* may vary based on technical training, certification(s), or degree

Travel Required


About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on customer site requirements.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.