CNI Senior Infrastructure Analyst

To provide senior-level database support, administration, and technical ownership across Oracle (and some SQL Server/PostgreSQL) platforms within NESO's Critical National Infrastructure (CNI) environment. This role is vital for maintaining systems that directly contribute to keeping the UK's national energy infrastructure operational., * Deliver 24×7 system management and administration of Oracle databases in a mission-critical, high-availability environment.

• Perform proactive maintenance, monitoring, and performance optimisation.
• Support both legacy and modern Oracle environments across a diverse estate.
• Administer and support Oracle RAC (12-19C), ASM, RMAN, GoldenGate, and Enterprise Manager.
• Follow and utilise Change, Incident, Problem, and Release management processes.
• Support system transitions including failover and standby operations.
• Provide technical analysis, root-cause investigation, and problem ownership.
• Mentor and provide technical guidance to other technical staff.
• Liaise with 3rd-party vendors and internal support teams as required.
• Participate in an out-of-hours on-call rota once fully embedded., * Work calmly and methodically within a high-stakes, high-pressure environment where actions can have nationwide impact.
• Operate with a high degree of autonomy, reliability, and accuracy.
• Collaborate closely with internal CNI teams, DBAs, service managers, and system health/monitoring teams.

• OpenVMS-based Oracle systems (important for CNI operations)
• Red Hat Linux (core OS for Oracle estate)
• Some PostgreSQL environments
• Limited Microsoft SQL Server exposure, * 10+ years' experience as a Database Administrator (Oracle-focused).
• Hands-on expertise with:

• Oracle 12-19C
• Oracle RAC, ASM, RMAN, GoldenGate
• Oracle Enterprise Manager

• Strong understanding of Red Hat Linux, including KSH shell scripting.
• Experience supporting business-critical, real-time systems.
• Proven ability to work independently in a sensitive operational environment.
• Strong communication skills-verbal, written, and cross-team collaboration.
• Experience in ITIL-based environments., * OpenVMS exposure (training possible but limited for contractors).
• Experience with PostgreSQL.
• Experience with MS SQL Server.
• Proven customer-facing IT service experience.
• Experience participating in out-of-hours or escalation support rotas., * Degree or equivalent higher education in a computing/technical discipline.
• ITIL Foundation (minimum; higher preferred).
• Recognised technical certifications (Oracle, Linux, etc.) desirable.