Open Source DBA — PostgreSQL and MySQL (Replication, Tuning, RCA) for NATO with security clearance

This is a production DBA post on open source engines: PostgreSQL and MySQL standalone and clustered across development test and live. It is the unglamorous half of database work the half where replication lag lock contention and a badly planned query decide whether anyone else can do their job today.

It suits someone who tunes rather than guesses who has restored from backup in earnest and who writes the root cause analysis afterwards because the next incident depends on it.

What you would be doing

• Install configure maintain and upgrade PostgreSQL 12 and MySQL 8 standalone and clustered.
• Run routine maintenance properly schema housekeeping index maintenance statistics retention.
• Manage users roles privileges and authentication on least-privilege lines.
• Forecast storage growth and advise on partitioning and archiving before capacity becomes an incident.
• Troubleshoot production problems: data corruption replication failures performance degradation.
• Monitor database health lock contention deadlocks wait events replication lag resource use.
• Analyse and optimise query performance with execution plans and InnoDB tuning as everyday tools.
• Produce root cause analysis for critical incidents and keep environments consistent.

What you would bring

• Solid production experience on both PostgreSQL and MySQL.
• Replication clustering and recovery experience that has been tested rather than documented.
• Real query optimisation practice on both engines.
• Capacity planning and monitoring instincts.
• The habit of coordinating with application and infrastructure teams rather than around them.

The work is full time on site in Brussels.