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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mainframe Ops/App Support - **Company:** Ddc It Services, LLC - **Location:** Scottsdale, AZ, United States - **Contract:** Permanent contract - **Skills:** Microsoft Word, Microsoft Excel, Microsoft Windows, Batch Processing, Microsoft Outlook, Software Documentation, Web Browsers, Job Control Language (JCL), Job Entry Subsystem 2/3, Mainframes, Microsoft Office, Network Monitoring, Terminal Emulators, Z/OS, Ibm Z/vm, User Accounts - **Published:** August 24, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=8907b9386c505da0 ## About the Role Required Certifications (IAT Level I - Must possess one of the following): * A+ CE * CCNA Security * Network+ CE * SSCP Clearance Required: Secret, IT-I ## Description We are seeking someone to join our team as a Mainframe Ops/App Support. The qualified individual will work within an IBM and Unisys mainframe OS and environment to support customer processing, applications, and configurations., * Provide support controlling, diagnosing, and resolving difficult problems that arise due to incorrect ECL coding/programming techniques. * Provide IBM and Unisys Mainframe Operations/Application support including performing IPL in a highly-complex mainframe operating environment. Provide generalized expertise in OS2200, z/OS, and z/VM operating environments, JES2, JCL, and OpCon Unisys scheduling tool. * Utilize a Windows-based personal computer workstation and the MS Office suite (Outlook, Excel, and Word), Internet browsers, Mainframe Terminal Emulation Software, and ITSM ticketing software. * Provide support using standard tools (currently BMC Control Products Suite) for scheduling to include building, maintaining, and scheduling batch processing (to include complex system abend (error) recovery techniques). Provide real-time accurate monitoring and troubleshooting of multiple mainframe systems and applications. * Conduct troubleshooting of mainframe application support issues in a manner that minimizes interruptions in the MLOB ability to provide customer support. * Work with government personnel, other contractors, MLOB management, and customer personnel to ensure overall efficiency and effectiveness of MLOB Operations and Application Support. * Support MLOB Ops/App Support tracking status of mainframe Change Management which includes Change Requests and Authorized Service Interruptions (ASI). * Monitor and maintain the stability of systems and resources in the MLOB Ops/App Support mainframe environment using performance/workload monitoring tools. * Perform system issue/incident determination, resolution, and RCA (e.g.: job abends, system performance degradation, network monitoring/recovery, workload monitoring/recovery). * Escalate issues to the Shift Supervisor if unresolved within 15 minutes of receipt. * Conduct tape service support for external tape systems in the z/OS Mainframe environment, including tape movement from silo to silo and preparing/updating tape administration documentation. * Provide status and activity reports on items of team activities. Attend and participate in meetings. * Evaluate the customer's mainframe processing requirements (e.g. scheduling requests, capacity concerns, and performance requirements) and communicate these requirements to customers and government employees. * Troubleshoot problems to minimize interruptions in the customer's critical business activities and proactively identify and resolve system performance bottlenecks. * Notify the customer of acceptance, receipt of upgrades, and interruptions in service for upgrades/system patches. * Provide follow-up during incident management including ITSM ticket updates, system documentation, and actions taken to fix the issue. * Contact customers for required system reporting including unannounced outages, service interruptions, and system restoral, ensuring compliance with SLA requirements. * Provide ongoing updates, workarounds, and incident resolutions to DISA Ecosystem, C2 cell, and the customer. * Receive and disseminate notifications for ASI, product upgrades, software updates, and COOP exercises. * Support customer performance requirements and customer support policies/procedures to ensure SLA objectives are achieved. * Use government documented processes and procedures to download and install application releases. * Use DISA approved tools and follow policies for Change, Incident, and Service Requests. * Create, delete, and modify application user accounts IAW access requests received by the mission partner and/or Terminal Area Security Officer. * Must be willing to work 3rd shift. * Performs other related duties as assigned. ## Related Videos - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Cloud as the new mainframe: why the cloud hype does not reflect the dev reality](https://www.wearedevelopers.com/videos/797-cloud-as-the-new-mainframe-why-the-cloud-hype-does-not-reflect-the-dev-reality) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [My journey into DevOps world - How it all started!](https://www.wearedevelopers.com/videos/545-my-journey-into-devops-world-how-it-all-started) - [Migrating from COBOL with AI: A Moonshot Demo](https://www.wearedevelopers.com/videos/1531-migrating-from-cobol-with-ai-a-moonshot-demo) - [Grappling With Clunky Old Software? Start by Understanding What’s Inside!](https://www.wearedevelopers.com/videos/1189-grappling-with-clunky-old-software-start-by-understanding-what-s-inside) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany) - [Dev Digest 162: AI careers, MCP, AWS best practices & floppy sweaters](https://www.wearedevelopers.com/magazine/571-dev-digest-162-ai-careers-mcp-aws-best-practices-floppy-sweaters) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Dev Digest 172: CODE100 is back, Linux Containers & PHP in Node!](https://www.wearedevelopers.com/magazine/597-dev-digest-172-code100-is-back-linux-containers-php-in-node)