Senior/Expert In Cluster/HA Management

Xcede Recruitment Solutions; United Kingdom; On-site; GBP 100,000 - 125,000; Part time

Job summary

A tech recruitment agency is looking for a Senior HA/Clustering Engineer to implement a PostgreSQL cluster using Pacemaker. This contract role requires deep expertise in RHEL9/Linux environments and a proven track record in PostgreSQL HA. Immediate start available with a competitive daily rate and a chance to shape high availability design on a high-impact project.

Benefits

Competitive daily rate

Immediate engagement on a high-impact project

Opportunity to shape HA design

Qualifications

• Experience with PostgreSQL clustering and high availability.
• Must be available for immediate start.

Responsibilities

• Design, configure, and support high availability clustering.
• Manage hot standby promotion and asynchronous WAL replication.
• Implement fencing in VM-based environments.
• Configure RabbitMQ with HA queues.
• Troubleshoot, optimise, and ensure reliable failover.

Skills

Deep expertise in RHEL9/Linux environments

Proven track record in PostgreSQL HA & replication

Strong hands-on experience with Pacemaker clustering

Knowledge of fencing mechanisms (IPMI/virsh)

Familiarity with RabbitMQ HA queues

Strong problem-solving and troubleshooting skills

Job description

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

• Design, configure, and support high availability clustering with Pacemaker and PostgreSQL.
• Manage hot standby promotion using OCF and asynchronous WAL replication to multiple replicas.
• Implement fencing (IPMI/virsh) in VM-based (non-container) environments.
• Configure and support RabbitMQ with HA queues (or similar message queue systems).
• Troubleshoot, optimise, and ensure reliable failover and recovery processes.

Key Skills & Experience

• Deep expertise in RHEL9/Linux environments.
• Proven track record in PostgreSQL HA & replication.
• Strong hands-on experience with Pacemaker clustering and resource management.
• Knowledge of fencing mechanisms (IPMI/virsh).
• Familiarity with RabbitMQ HA queues or equivalent.
• Strong problem-solving and troubleshooting skills.
• Available for immediate start.

What We Offer

• Competitive daily rate.
• Immediate engagement on a high-impact project.
• Opportunity to shape HA design and provide technical leadership.

If you are available and have the expertise required, please apply today with your CV and availability details.