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# DB2 Mainframe Z/OS Expert (Remote)

- **Company:** TWO95 International, Inc
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Contract
- **Skills:** Application Lifecycle Management, User Authentication, Cyber Security, System Configuration, Data Sharing, IBM DB2, Disaster Recovery, Middleware, IBM Parallel Sysplex, Mainframes, Performance Tuning, IBM Resource Access Control Facility, Software Deployment, Z/OS, Data Logging, System Availability
- **Published:** October 31, 2026
- **Apply:** https://www.dice.com/job-detail/4657ba87-e511-49af-a6a4-74961ea1204c

## About the Role

· Must have experience with V13 and can speak in more detail on DSNZPARM recommendations and software deployment and backout considerations.

· Must be a very seasoned, highly skilled resource with preferably experience migrating to DB2 V13 or at least setting it up for migration.

· 10+ years of hands-on Db2 for z/OS engineering, administration, architecture, performance tuning, recovery, and production support experience in large enterprise Sysplex and data sharing environments

· Expert knowledge of Db2 for z/OS subsystem internals, including IRLM, DDF, EDM pools, buffer pools, logging, utilities, packages, plans, WLM interactions, and z/OS dependencies

· Demonstrated experience configuring, governing, and tuning DSNZPARM settings across development, test, and production environments

· Proven experience supporting Db2 data sharing groups, including group buffer pool strategy, coupling facility interactions, member balancing, lock contention analysis, restart/recovery behavior, high availability, and disaster recovery procedures

· Strong understanding of Db2 security architecture, including RACF integration, authentication, authorization, trusted contexts, privileged access controls, SECADM/SYSADM separation, audit traces, encryption, certificates, and secure remote connectivity

· Experience performing Db2 software lifecycle management, including SMP/E, PTF evaluation, RSU planning, APAR analysis, ++HOLDDATA review, vendor advisory assessment, maintenance windows, fallback planning, and deployment governance

· Ability to assess vulnerability findings, CVE applicability, security bulletins, patch exposure, configuration drift, exploitability, compensating controls, remediation complexity, and implementation risk for Db2 for z/OS environments

· Experience identifying software risk exposures, attack surface, control gaps, operational weaknesses, and remediation opportunities across Db2, z/OS, RACF, DDF, utilities, middleware interfaces, certificates, and automation tooling