Senior Linux, AIX & Oracle Database Administrator - Investment Banking in London

Senior Linux, AIX & Oracle Database Administrator – Investment Banking Location: London Up to £80k + Bens THIS ROLE DOES NOT OFFER SPONSORSHIP Join a leading investment bank in London as a Senior Linux, AIX & Oracle Database Administrator , playing a key role in maintaining and evolving the technology platforms that power complex trading, treasury, and finance operations. This is a hands-on, senior technical role where you’ll enhance systems stability, optimise performance, and drive automation across mission-critical environments supporting Oracle Flexcube and Oracle ERP systems. Key Responsibilities Administer and optimise Oracle databases supporting core banking and trading platforms. Manage and maintain Linux (RHEL/Oracle Linux) and AIX servers across high-availability environments. Perform system upgrades, patching, capacity planning , and performance tuning. Collaborate with infrastructure and application teams to resolve incidents and fine-tune service reliability. Design and maintain backup, recovery, and replication strategies using RMAN and Data Guard . Automate operational procedures using shell scripting and configuration management tools. Ensure systems comply with internal security standards and regulatory requirements . Participate in disaster recovery planning , testing, and documentation. Provide on-call support for critical production systems. Skills & Experience ~7+ years’ experience as an Oracle DBA , including RAC, ASM , and tuning . ~5+ years in Linux (RHEL/Oracle Linux) and AIX administration, ideally in financial services. ~ Expertise in SQL, PL/SQL , and Unix shell scripting for automation and optimization. ~ Hands-on experience supporting Flexcube databases or similar core banking systems. ~ Strong grasp of financial systems architecture and ITIL-aligned operational processes. ~ Proficiency with monitoring tools (OEM, Nagios) and log analysis . ~ Excellent problem-solving , communication , and collaboration skills. Desirable Familiarity with WebLogic in enterprise or banking settings. Exposure to regulated, high-availability environments within investment or corporate banking. What’s on Offer A technically challenging environment committed to stability and performance. The opportunity to work on critical financial platforms supporting trading and settlement workflows.