Senior Linux - Unix Admin - Morgan McKinley

Responsibilities

• Database & 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 inFlexcube or WebLogic
• 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

Additional Information

Job Title: Senior Unix/Linux & Database Administrator Job 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.

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