Job Title: Senior Unix/Linux & Database AdministratorJob Purpose We are seeking a hands-on, experienced Senior Administrator specialising in Unix/Linux environments and database management within the financial services sector. This role is critical to the stability, performance, and scalability of a recently implemented core banking platform (live since October).
The successful candidate will be expected to hit the ground running, supporting a complex, high-availability environment spanning 50+ servers and 15-20 databases, while also contributing to ongoing optimisation and platform maturity.
Key ResponsibilitiesDatabase & Platform Management
*Administer and optimise enterprise databases (including SQL Server and Oracle environments) supporting core financial applications
*Manage and support clustered database environments, including Oracle RAC
*Ensure high availability, performance tuning, and data integrity across all database platforms
Application & Web Layer Support
*Support and manage front-end application environments, with experience inFlexcubeorWebLogic
*Participate in web environment testing and ongoing platform stabilisation following recent go-live
Infrastructure & Systems Administration
*Manage and maintain Linux and Unix-based servers across a large-scale production estate (50+ servers)
*Perform system upgrades, patching, and performance tuning across OS and database layers
Cluster & Resiliency Management
*Manage cluster software and high-availability configurations across systems
*Support disaster recovery planning, testing, and execution
Automation & Continuous Improvement
*Automate routine administrative tasks using shell scripting and modern tooling
*Work closely with application and infrastructure teams to troubleshoot production issues and improve system performance
Governance & Operations
*Ensure compliance with IT security standards and financial regulatory requirements
*Align with ITIL processes and formal change management practices
*Provide on-call support and contribute to incident response and operational documentation
Experience & Skills Required*Database Expertise:*7+ years in DBA roles, including SQL Server and Oracle
*Strong experience with clustering, storage, and performance tuning
*Hands-on experience with Oracle RAC

*Systems Expertise:*5+ years administering enterprise Linux/Unix environments

*Application Layer Experience:*Experience supporting Flexcube or WebLogic environments

*Technical Skills:*Advanced SQL and procedural database languages
*Strong Unix/Linux shell scripting skills

*Environment Experience:*Proven background supporting core banking systems
*Experience working in complex, multi-server, multi-database environments

*Tooling & Processes:*Familiarity with automation, monitoring, and log analysis tools
*Strong understanding of ITIL and change management frameworks

*Soft Skills:*Strong problem-solving ability with a proactive, hands-on mindset
*Ability to operate independently in a fast-paced, production-critical environment

Additional Context*Recently implemented core banking system (live since October)
*Estate includes 50+ servers and 15-20 databases
*Significant focus on stabilisation, optimisation, and scalability
*Requires a candidate who can quickly take ownership and deliver impact