Senior Linux & Oracle DBA

Proactive.IT Appointments Limited; Greater London; On-site; GBP 70,000 - 80,000; Full time

Job summary

A leading financial services organisation is seeking an experienced Senior Linux / Oracle DBA to support and evolve their core banking platforms. In this hands-on role, you'll ensure the stability and performance of critical banking applications, manage Linux and AIX environments, and collaborate with IT teams to resolve complex issues. Ideal candidates will have 7+ years as an Oracle DBA, strong experience with Oracle RAC and Flexcube, and excellent communication skills. This position offers competitive compensation of £70k – 80k per year.

Qualifications

• 7+ years’ experience in Oracle DBA roles within enterprise environments.
• Strong experience with Oracle RAC, ASM, performance tuning, and high availability.
• 5+ years’ hands-on experience administering Linux and AIX systems.
• Experience supporting Oracle Flexcube in a banking environment.
• Advanced SQL and PL/SQL knowledge.

Responsibilities

• Administer, maintain, and optimise Oracle databases supporting Flexcube banking applications.
• Manage Linux and AIX environments hosted on IBM Power 10 infrastructure.
• Perform system upgrades, patching, performance tuning, and capacity planning.
• Collaborate with teams to resolve complex production issues.

Skills

Oracle RAC, ASM, performance tuning

Linux (RHEL / Oracle Linux)

AIX systems

SQL and PL/SQL

Unix scripting (Bash, Korn)

Monitoring and alerting tools (OEM, Nagios)

Troubleshooting skills

Communication skills

Stakeholder engagement

Job description

11398SR1
£70k – 80k per year

Senior Linux / Oracle DBA

We’re working with a leading financial services organisation seeking an experienced Senior Linux / Oracle DBAto play a key role in supporting and evolving their core banking platforms.

This is a hands-on position suited to someone with deep technical expertise across Oracle databases, IBM Power environments, and enterprise Linux/AIX systems, ideally gained within a banking or financial services environment.

You’ll be responsible for ensuring the stability, performance, and availability of business-critical banking and finance applications, working closely with senior IT stakeholders and wider application teams.

Key Responsibilities

• Administer, maintain, and optimise Oracle databases supporting Flexcube banking applications

• Manage Linux (RHEL / Oracle Linux) and AIX environments hosted on IBM Power 10 infrastructure

• Perform system upgrades, patching, performance tuning, and capacity planning

• Support high availability and disaster recovery solutions using Oracle RAC, ASM, RMAN, and Data Guard

• Collaborate with application and infrastructure teams to resolve complex production issues

• Participate in disaster recovery planning, testing, and incident response

• Implement automation through shell scripting and configuration management tools

• Ensure systems comply with internal IT security standards and regulatory requirements

• Produce and maintain technical documentation and operational runbooks

• Provide on-call support for critical production environments

Skills & Experience Required

• 7+ years’ experience in Oracle DBA roles within enterprise environments

• Strong experience with Oracle RAC, ASM, performance tuning, and high availability

• 5+ years’ hands-on experience administering Linux (RHEL / Oracle Linux) and AIX systems

• Proven experience supporting Oracle Flexcube in a banking environment

• Solid understanding of financial systems architecture and regulatory environments

• Advanced SQL and PL/SQL knowledge

• Strong Unix scripting skills (Bash, Korn)

• Experience with monitoring and alerting tools (OEM, Nagios or similar)

• Familiarity with ITIL processes and change management

• Excellent troubleshooting, communication, and stakeholder engagement skills

• Ability to work independently while collaborating effectively across teams

Senior Linux / Oracle DBA

Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable for interview will be contacted.

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