Unix System Administrator

Verse Consulting; Greater London; Hybrid; GBP 101,000 - 129,000; Full time

Job summary

Verse Consulting in London (Hybrid – 2–3 days onsite per week) is seeking an experienced Unix/Linux Infrastructure Engineer to provide BAU operational support across a large-scale enterprise Linux estate in a financial services environment.

You will administer Red Hat Enterprise Linux, patching and security hardening, manage Satellite and Capsule Servers in DMZ, and contribute to incident resolution, change management and disaster recovery testing. The role includes an on-call rota.

Qualifications

• BAU infrastructure support in large-scale enterprise environments.
• Experience handling production infrastructure incidents and implementing changes.
• Familiarity with ITSM tooling, third-party vendors and formal change processes.
• Excellent troubleshooting, stakeholder management and communication skills.

Responsibilities

• Provide BAU operational support across enterprise Unix/Linux infrastructure, ensuring platform stability and availability.
• Troubleshoot and resolve infrastructure incidents, including P1/P2 escalations, with IT teams.
• Administer and maintain RHEL environments, including patching and security hardening.
• Manage Red Hat Satellite and Capsule Server in DMZ environments, including patch distribution.
• Deploy and troubleshoot Microsoft Defender for Linux for endpoint security and vulnerability management.
• Perform routine administration: filesystem management, capacity planning, logging, certificates and user access.
• Coordinate infrastructure changes, vendor support, backup and disaster recovery testing.
• Maintain operational documentation and participate in scheduled maintenance and on‑call support.

Skills

BAU infrastructure support

Incident management

ITSM tooling

Stakeholder management

Communication skills

Change management

Tools

Red Hat Satellite

Capsule Server

Microsoft Defender for Linux

Ansible

Kubernetes/OpenShift

VMware

Azure

Python

Bash scripting

LDAP/AD integration with Linux

Job description

Contract Length: 12 monthsLocation: London (Hybrid – 2–3 days onsite per week)Rate: £550–£700 per day (Inside IR35)

Overview

We are seeking an experienced Unix/Linux Infrastructure Engineer to provide BAU operational support across a large-scale enterprise Linux estate within a financial services environment.

The infrastructure primarily consists of Red Hat Enterprise Linux (RHEL), supporting business-critical applications and enterprise infrastructure.

The successful candidate will be responsible for infrastructure support, incident management, patching, security, change implementation and maintaining high service availability. The role also includes participation in an out-of-hours support rota.

Key Responsibilities

• Provide BAU operational support across enterprise Unix/Linux infrastructure, ensuring platform stability and availability.
• Troubleshoot and resolve infrastructure incidents, including P1/P2 escalations, working closely with application and infrastructure teams.
• Administer and maintain Red Hat Enterprise Linux environments, including patching, upgrades and security compliance.
• Manage Red Hat Satellite and Capsule Servers within DMZ environments, including patch distribution and lifecycle management.
• Deploy, configure and troubleshoot Microsoft Defender for Linux, supporting endpoint security and vulnerability management.
• Perform routine administration, including filesystem management, capacity planning, logging, certificates and user access.
• Coordinate infrastructure changes, vendor support, backup and recovery, and disaster recovery testing.
• Maintain operational documentation and participate in scheduled maintenance and on‑call support.

Required Experience

• Strong background in BAU infrastructure support within large-scale enterprise environments.
• Experience supporting business-critical production infrastructure, managing incidents and implementing infrastructure changes.
• Experience working with ITSM tooling, third-party vendors and formal change management processes.
• Excellent troubleshooting, stakeholder management and communication skills.

Technical Skills

• Red Hat Enterprise Linux (RHEL 7/8/9) administration and troubleshooting.
• Hands‑on experience supporting Unix/Linux infrastructure underpinning the Murex platform.
• Microsoft Defender for Linux, including deployment, configuration, monitoring and troubleshooting.
• Red Hat Satellite and Capsule Server administration, including deployments and patch management within DMZ environments.
• Linux patching, security hardening and vulnerability remediation.
• Enterprise server and storage infrastructure, including SAN and Fibre Channel.
• Linux networking, including TCP/IP, DNS, NTP and firewall connectivity.
• Bash scripting and working knowledge of Python.
• Backup, recovery and disaster recovery procedures.
• Previous experience working within financial services, ideally investment banking or capital markets.
• Ansible and infrastructure automation.
• Kubernetes or OpenShift.
• VMware and Azure infrastructure.
• Monitoring and observability tooling.
• LDAP/Active Directory integration with Linux.