Principal Database Administrator/DBA (Mainframe Db2 z/OS)

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., * 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 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.

Do you have experience in Vendor communication?, * 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, PostgreSQL, and CockroachDB
• 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.