> Markdown version of [/jobs/ext/1305520-mainframe-administrator](https://www.wearedevelopers.com/jobs/ext/1305520-mainframe-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mainframe Administrator - **Company:** Ipolarity LLC - **Location:** Hanover, NJ, United States (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Adaptable Database Systems, Application Programming Interfaces (APIs), JIRA, Customer Information Control System (CICS), Computer Programming, System Configuration, Data Sharing, IBM DB2, DevOps, Distributed Systems, Endevor, IBM Parallel Sysplex, Monitoring of Systems, Job Control Language (JCL), Rexx (Programming Language), Mainframes, Performance Tuning, IBM Resource Access Control Facility, Standard Sql, Subsystems, System Programming, TCP/IP, Management of Software Versions, Z/OS, Tso/ispf, Connectivity Problems, System Availability, Omegamon, Cloud Integration, Splunk - **Published:** July 17, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=6bde32643a322c47 ## About the Role * 7-12+ years of mainframe experience * 3-5+ years in DB2 Systems Programming / Administration * Experience with IBM DB2 for z/OS and Replication products (Qrep, SQLrep and CDC) - software installation, version upgrades and maintenance, certification testing, documentation of operational procedures, disaster recovery testing * Deep knowledge of: + ZPARMs and subsystem configuration + Buffer pools, logs, BSDS, catalog/directory * Strong troubleshooting skills for: + System-level DB2 issues + Performance and connectivity problems * Proficiency in: + JCL, TSO/ISPF, SDSF + SMP/E (preferred) Preferred Qualifications: * Familiarity with: + DB2 utilities and performance tools + Monitoring tools (OMEGAMON, MainView) * Knowledge of: + DevOps tools for mainframe (Endevor, ISPW, etc.) * Exposure to: + Cloud integration or hybrid architectures * Experience with: + Large-scale DB2 upgrades or migrations + Performance optimization initiatives * Knowledge of: + Modernization tools (z/OS Connect, APIs) * Experience with software support for BMC for DB2 Tools, IBM z/OS Connect, Software AG ADABAS and Natural products * Programming experience with REXX * Working knowledge of SQL, JIRA, SMP/E, RACF, TCP/IP, Network certificates, Splunk * Working knowledge of other Mainframe Subsystems (CICS, IMS, MQ) ## Description We are seeking a highly skilled Mainframe DB2 Systems Administrator to manage and support DB2 for z/OS subsystems in a mission-critical enterprise environment. This role is responsible for installation, configuration, performance tuning, and overall health of DB2 subsystems, ensuring high availability, security, and optimal performance., DB2 Installation & Configuration * Install, configure, and maintain DB2 for z/OS subsystems * Perform version upgrades, patching (PTFs/APARs), and system maintenance * Manage subsystem configuration and initialization parameters * Maintain core DB2 components: + ZPARMs (DSNZPARM) + Buffer pools + Logs and BSDS + Catalog and directory Performance & Capacity Management * Monitor and tune DB2 system-level performance (CPU, memory, I/O) * Optimize: + Buffer pools + Locking and concurrency + Thread and connection performance * Support capacity planning and performance analysis using DB2 and system tools High Availability & Data Sharing * Manage and support: + DB2 Data Sharing environments (Sysplex) + Coupling Facility integration + Workload balancing and failover * Ensure DB2 availability and resilience through DR strategies System Maintenance & Troubleshooting * Analyze and resolve: + Subsystem failures + Dumps, logs, and abends + Connectivity issues affecting DB2 operations * Perform root cause analysis and implement preventive actions * Support interaction with: + Batch (JCL) + CICS + IMS + MQ and distributed systems ## Related Videos - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Integrate your Cognitive Assistant with 3rd-party DBs and software](https://www.wearedevelopers.com/videos/249-integrate-your-cognitive-assistant-with-3rd-party-dbs-and-software) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) ## Related Articles - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Software Developer Salary in Switzerland [2023]](https://www.wearedevelopers.com/magazine/215-software-developer-salary-in-switzerland-2023) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Making Data Warehouses Fast: A Developer’s Story](https://www.wearedevelopers.com/magazine/107-making-data-warehouses-fast-a-developer-s-story) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [Data Science & more: The Lopez dilemma](https://www.wearedevelopers.com/magazine/10-data-science-more-the-lopez-dilemma)