Principal Database Administrator​/DBA; Mainframe Dbz​/OS

Position: Principal Database Administrator/DBA (Mainframe Db2 z/OS)
## Principal Database Administrator/DBA (Mainframe Db2 z/OS)
Apply locations:
100 New Millennium Way, Bldg 2, Durham NC:
Merrimack, NH:
Westlake, TXtime type:
Full time posted on:
Posted Todayjob requisition :
2128135## ##

Job Description:

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Note:

Fidelity will not provide immigration sponsorship for this position.## ## ##

The Role This role is responsible for the reliability, performance, and availability of Fidelity’s mission-critical Mainframe Db2 z/OS database platforms supporting high-volume brokerage and trading applications.

As a DBA you will play a hands-on, senior technical role supporting day-to-day database administration operations while also influencing database architecture, replication strategy, and platform modernization.

Key Responsibilities
· 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## The Expertise and Skills You Bring

Required Qualifications
· 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

Preferred / Nice to Have
· Experience integrating mainframe data platforms with distributed databases such as Oracle, Postgre

SQL, and Cockroach DB
· Exposure to Kafka and event-driven or streaming data architectures
· Familiarity with hybrid environments spanning on-prem and AWS cloud
· Experience contributing to platform modernization, automation, or resiliency initiatives.## The Team The Mainframe DBA team manages Fidelity Brokerage’s Db2 z/OS database platform and its integration with distributed and cloud-based data ecosystems.

The team is responsible for the full database lifecycle — from physical design and replication strategy through deployment, performance optimization, capacity planning, upgrades, patching, and access/security management. We work closely with application partners and enterprise technology teams to ensure Fidelity’s core trading platforms remain highly available, scalable, and resilient.## ##

Certifications:

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