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Senior linux administrator

London
Morgan Mckinley
Linux administrator
€60,000 a year
Posted: 19h ago
Offer description

Department: Infrastructure Operations


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.


Key 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 in Flexcube or WebLogic
* Participate in web environment testing and ongoing platform stabilisation following the 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
* Manage cluster software and high‑availability configurations across systems
* Support disaster recovery planning, testing, and execution
* 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
* 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

If you are interested, please apply below, or reach out to georgeneville@morganmckinley.com

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