Job description

Location : Cypress, CA (100% Remote) Duration : Long term Job Responsibilities The Mainframe System Administrator is responsible for the administration, maintenance, and optimization of the Client's mainframe computing environment. This role ensures availability, performance, and integrity of mission-critical systems including z/OS, subsystems like Db2, and enterprise-level monitoring and storage platforms. The administrator supports daily operations as well as project-based activities, such as modernization initiatives or disaster recovery planning. The ideal candidate will demonstrate strong hands-on experience with tools including Omegamon, Db2, IBM Workload Manager (WLM), and Hitachi Data Storage and Data Domain systems. Position Overview: Title: Mainframe System Administrator Type: Contract (initial 6 months, will extend — 3–4 year need) Location: 100% Remote Work Hours: Flexible, standard hours are 8am–5pm PST; on-call support required Focus: Primarily production support, with involvement in active projects (optimization, security, data center move, etc.) Hiring Context: Reason for Hire: Backfill Tech Environment: Operating System: z/OS Hardware: IBM Z15 (moderate size) Storage Systems: Hitachi SAM Data Domain (for backups) Applications: Written in COBOL — familiarity is helpful but not core Server: Single-server mainframe environment Ticketing Systems: Jira preferred, but ServiceNow or similar is acceptable Required Skills & Experience: Native z/OS system administration experience Strong knowledge of IBM Omegamon Working knowledge of Db2 Solid change management experience (ITIL-aligned preferred) Experience with mainframe + storage integration Comfortable running ad hoc queries, optimizing performance, and supporting mainframe-based systems Soft Skills & Qualities (Critical): Excellent communication skills — must be proactive and confident Must have a positive attitude, be independent, and able to "stand on their own two feet" Should not be quiet/reserved — this is a highly collaborative and visible role No specific industry experience required Current & Upcoming Projects: Mainframe performance optimization Security and compliance enhancements Upcoming data center move Top Skills Summary (from JD + intake): Communication Change Management Native z/OS IBM Omegamon Db2 Ticketing systems (Jira preferred) Mainframe + storage administration (Hitachi SAM, Data Domain) About Us: InterSources Inc , a Certified Diverse Supplier, was founded in 2007 and offers innovative solutions to help clients with Digital Transformations across various domains and industries. Our history spans over 19 years and today we are an Award-Winning Global Software Consultancy solving complex problems with technology. We recognize that our employees and our clients are our strengths as the diverse talents and opportunities they bring to the table enable us to grow as a global platform and they are causally linked with our success. We provide strategic and technical advice, and we have expertise in areas covering Artificial Intelligence, Cloud Migration, Custom Software Development, Data Analytics Infrastructure & Cloud Solutions, Cyber Security Services, etc. We make reasonable accommodations for clients and employees and we do not discriminate based on any protected attribute including race, religion, color, national origin, gender sexual orientation, gender identity, age, or marital status. We also are a Google Cloud partner company. We align strategy with execution and provide secure service solutions by developing and using the latest technologies that thrive our resources to deliver industry-leading capabilities to our clients and customers, making it convenient for our clients to do business with InterSources Inc. Our teams also drive growth by refining technology-driven client experiences that put the users first, providing an unparalleled experience. This results in strengthening the core technologies of clients, enabling them to scale with flexibility, create seamless digital experiences and build lifelong relationships.

Requirements

Must-haves

Location : Cypress, CA (100% Remote)
Duration : Long term
Title: Mainframe System Administrator
Type: Contract (initial 6 months, will extend — 3–4 year need)
Location: 100% Remote
Work Hours: Flexible, standard hours are 8am–5pm PST; on-call support required
Focus: Primarily production support, with involvement in active projects (optimization, security, data center move, etc.)
Reason for Hire: Backfill
Operating System: z/OS
Hardware: IBM Z15 (moderate size)
Data Domain (for backups)
Applications: Written in COBOL — familiarity is helpful but not core
Server: Single-server mainframe environment
Native z/OS system administration experience
Strong knowledge of IBM Omegamon
Working knowledge of Db2
Experience with mainframe + storage integration
Comfortable running ad hoc queries, optimizing performance, and supporting mainframe-based systems
Excellent communication skills — must be proactive and confident
Must have a positive attitude, be independent, and able to "stand on their own two feet"
Should not be quiet/reserved — this is a highly collaborative and visible role

Nice-to-haves

Ticketing Systems: Jira preferred, but ServiceNow or similar is acceptable
Solid change management experience (ITIL-aligned preferred)
Ticketing systems (Jira preferred)

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

jira

Platform: jobdiva
Effort: medium