Principal Database Administrator, DBA – Mainframe Db2 z/OS

skillventory - A Leading Talent Research Firm

Principal Database Administrator managing Fidelity’s mainframe Db2 z/OS databases for trading applications. Ensuring reliability and performance while supporting mission-critical systems.

Posted 6/3/2026full-timeDurham • New Hampshire, North Carolina, Texas • 🇺🇸 United StatesLeadWebsite

Tech Stack

Tools & technologies

SQL

About the role

Key responsibilities & impact

Support and maintain large-scale Db2 databases on z/OS for business-critical trading and brokerage applications
Design, configure, and maintain low-latency data replication using IBM IIDR (Q Rep / CDC) in Active-Active and Active-Passive architectures
Perform proactive performance analysis and tuning to ensure optimal response times and system stability
Lead troubleshooting and rapid resolution of complex, time-sensitive production issues with a strong sense of ownership and attention to detail
Participate in an on-call rotation to provide 24x7 production support for critical database platforms
Collaborate with application teams, infrastructure partners, and vendors to deliver resilient, scalable database solutions

Requirements

What you’ll need

Extensive hands-on experience managing large, complex mainframe Db2 z/OS database environments
Deep expertise with IBM IIDR replication technologies (Q Rep / CDC), including setup, monitoring, tuning, and troubleshooting
Strong skills in Db2 utilities, SQL, JCL, and working knowledge of COBOL application interactions
Proven experience supporting mission-critical production systems with strict SLAs
Excellent communication skills and ability to work effectively across applications, infrastructure, and vendor teams

Benefits

Comp & perks

Health insurance
401(k) matching
Paid time off
Professional development opportunities

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Db2z/OSIBM IIDRQ RepCDCSQLJCLCOBOLperformance analysisdata replication

Soft Skills

troubleshootingattention to detailownershipcommunicationcollaboration