Job Title: Senior Oracle / SQL / MySQL Database Administrator (Operational Technology Environment)
Location: Wokingham or Warwick – Hybrid (3 days onsite)
Clearance: SC Cleared or SC Eligible (Mandatory)
Level: Senior / Lead


OverviewOur client is seeking a Senior Database Administrator with deep expertise across Oracle, SQL Server, and MySQL, and proven experience supporting databases within Operational Technology (OT) environments.
This is not a traditional IT DBA role. You will be working within safety-critical, highly regulated, and change-controlled industrial environments, supporting systems that directly impact SCADA, plant operations, manufacturing execution systems (MES), and real-time production.
The focus is on stability, resilience, and security — where uptime, compliance, and safety are non-negotiable.


Key ResponsibilitiesDatabase Administration & Operations*Administer, maintain, and optimise Oracle (12c/19c), SQL Server (2016+), and MySQL databases in production OT environments
*Perform installations, patching, configuration, upgrades, backups, and recovery
*Manage database objects, storage, schemas, tablespaces, indexing, and access controls
*Ensure 24/7 availability of mission-critical operational systems
OT Systems Support*Work closely with SCADA, control engineers, and plant operations teams
*Support databases integrated with PLCs, DCS, historians, and MES platforms
*Operate within restricted networks with strict change control and limited maintenance windows
*Troubleshoot issues impacting real-time operations and plant uptime
Performance & Reliability*Identify and resolve performance issues (wait events, deadlocks, slow queries)
*Implement high availability solutions including RAC, Data Guard, Always On, and Log Shipping
*Conduct proactive monitoring, tuning, and capacity planning
Backup, Recovery & DR*Manage RMAN, SQL Server backups, and MySQL backup strategies
*Execute point-in-time recovery and disaster recovery procedures
*Participate in resilience testing and DR exercises
Security & Compliance*Harden database environments in line with NIST, IEC 62443, ISO 27001
*Manage access controls, auditing, logging, and privilege management
*Apply patches within strict OT-approved schedules
Documentation & Governance*Produce detailed SOPs, architecture diagrams, and deployment guides
*Follow formal change management processes
*Maintain audit-ready documentation for regulatory inspections


Essential Skills & ExperienceTechnical Expertise*7+ years hands-on DBA experience in production environments
*Strong administration experience with:
*Oracle 12c/19c
*Microsoft SQL Server 2016+
*MySQL (mandatory)
*Tools: RMAN, OEM, Data Pump, SQL Server Agent, SSIS/SSRS
*Database performance tuning and optimisation
OT / Industrial Experience*Experience supporting databases integrated with:
*SCADA / DCS
*MES
*Industrial Historians (OSI PI, Wonderware, AspenTech)
*Plant automation systems
*Understanding of OT network segmentation, security zones, and operational constraints
*Experience in regulated or safety-critical industries such as:
*Utilities / Power Generation
*Manufacturing
*Oil & Gas
*Pharmaceuticals / Life Sciences
*Chemicals
Soft Skills*Strong stakeholder communication with engineering and plant teams
*Ability to work independently within isolated OT environments
*Calm, incident-response mindset focused on safety and uptime


Preferred Qualifications*Oracle OCP / OCM
*Microsoft Certified: Database Administrator
*Knowledge of IEC 62443, NIST 800-82 or OT cybersecurity standards
*Experience with OT-to-IT data replication
*Linux/UNIX administration for Oracle environments


Why Join?*Work on mission-critical national infrastructure systems
*High-impact role supporting real-world operational environments
*Senior-level ownership and autonomy
*Hybrid working with stable long-term programme
*Competitive salary and benefits package
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If you’re an experienced DBA who thrives in high-availability, safety-critical environments and enjoys working at the intersection of IT, OT, and industrial systems, we’d love to hear from you.
Apply now for a confidential discussion.