Senior/Expert HA/Clustering Engineer (PostgreSQL + Pacemaker) Contract: 2 weeks (likely extension) Location: Onsite (details on request) Start: Immediate We are seeking an experienced HA/Clustering Engineer to support the implementation of a high availability PostgreSQL cluster using Pacemaker on RHEL9/Linux environments. This is a short-term contract opportunity for a senior specialist who can provide hands-on expertise and guide project delivery. Key Responsibilities<ul><li>Design, configure, and support high availability clustering with Pacemaker and PostgreSQL.</li><li>Manage hot standby promotion using OCF and asynchronous WAL replication to multiple replicas.</li><li>Implement fencing (IPMI/virsh) in VM-based (non-container) environments.</li><li>Configure and support RabbitMQ with HA queues (or similar message queue systems).</li><li>Troubleshoot, optimise, and ensure reliable failover and recovery processes.</li></ul>Key Skills & Experience<ul><li>Deep expertise in RHEL9/Linux environments.</li><li>Proven track record in PostgreSQL HA & replication.</li><li>Strong hands-on experience with Pacemaker clustering and resource management.</li><li>Knowledge of fencing mechanisms (IPMI/virsh).</li><li>Familiarity with RabbitMQ HA queues or equivalent.</li><li>Strong problem-solving and troubleshooting skills.</li><li>Available for immediate start.</li></ul>What We Offer<ul><li>Competitive daily rate.</li><li>Immediate engagement on a high-impact project.</li><li>Opportunity to shape HA design and provide technical leadership.</li></ul>📩 If you are available and have the expertise required, please apply today with your CV and availability details.

Senior/Expert in Cluster/HA Management

Previously working as an account manager in the public sector for the last 4 years, Luke joins our Contract team focusing on the Cloud and End-User Computing sector. 

Luke Roberts

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