Unix Engineer
Unix Engineer
Whitehall Resources require a Unix Engineer to work with a key client on a 6 month contract.
*This role will require on site work in London 3 days per week.
*Inside IR35.
Unix Engineer
Role Overview
The SI Unix Engineer is a senior Unix/Linux infrastructure specialist with a strong focus on platform security, compliance, and stability within highly regulated enterprise environments. The role supports critical Unix/Linux platforms, including legacy and modern systems, and plays a key part in data centre optimisation, migration, and security hardening initiatives.
This position requires deep hands on Unix/Linux expertise combined with strong security awareness, operational discipline, and the ability to communicate effectively with global stakeholders.
Key Responsibilities
* Provide L2/L3 support for Unix/Linux infrastructure platforms in production, including business critical and regulated systems
* Perform secure build, configuration, hardening, and ongoing maintenance of Unix/Linux servers
* Support data centre optimisation, migration, and transformation programmes, including platform stabilisation and risk reduction activities
* Implement and maintain security controls, including access management, patching, vulnerability remediation, and configuration compliance
* Participate in incident, problem, and change management, ensuring adherence to ITIL and security governance standards
* Support audit, risk, and compliance activities, including evidence gathering and remediation of audit findings
* Work closely with security, platform, and architecture teams to ensure platforms meet enterprise security and operational standards
* Create and maintain technical documentation, runbooks, and operational procedures
* Contribute to continuous improvement initiatives to enhance platform reliability, security, and operational efficiency
Technical Skills & Experience (Essential)
* Strong hands on experience administering Unix/Linux platforms in large enterprise environments
* Linux (RHEL, Oracle Linux, SUSE or equivalent)
* Unix variants (e.g. AIX, Solaris, HP UX or equivalent legacy platforms)
* Solid experience with system hardening and security best practices on Unix/Linux
* Strong understanding of:
- OS patching and lifecycle management
- User and privilege management (sudo, PAM, RBAC)
- File system, storage, and performance management
- Process monitoring, troubleshooting, and root cause analysis
* Experience working in regulated or security sensitive environments (e.g. banking, financial services, critical infrastructure)
* Familiarity with vulnerability management, security scanning, and remediation processes
* Experience supporting data centre migration or transformation programmes is highly desirable
* Working knowledge of ITIL processes (incident, problem, change)
Certifications (Preferred, not mandatory)
* Red Hat Certified Engineer (RHCE) or equivalent Linux certification
* Unix/Linux vendor certifications (AIX, Solaris, etc.)
* ITIL Foundation
* Security focused certifications (e.g. CompTIA Security+, CISSP – foundational exposure acceptable)
Soft Skills & Behavioural Attributes
* Strong verbal and written communication skills in English
* Ability to explain technical issues clearly to both technical and non technical stakeholders
* Proven ability to work effectively in global, distributed teams
* Strong analytical and problem solving mindset
* High attention to detail, particularly in security and compliance driven environments