Senior Oracle / SQL Database Administrator (OT Environment)
21 days ago
Wokingham
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 Overview Our 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 systemsOT 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 uptimePerformance & 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 planningBackup, 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 exercisesSecurity & 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 schedulesDocumentation & 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 optimisationOT / 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, • ChemicalsSoft 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 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.