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2nd/3rd line platform engineer

Bristol (City of Bristol)
CGI
Platform engineer
Posted: 31 December
Offer description

Position Description:

This role provides advanced operational support, maintenance, and development of a Secure MOD Platform. The position involves working across a complex technical estate to ensure availability, stability, and capability enhancement of core infrastructure and services. The role is primarily based on-site at MOD Corsham.

Your future duties and responsibilities:

. Provide 2nd/3rd line technical support and engineering expertise for incident, problem, and change management across production and non-production environments, including out-of-hours escalation as required.
. Administer and troubleshoot Windows Server platforms (AD, GPO, DNS, DHCP, IIS, clustering) in large-scale virtualised environments.
. Conduct root cause analysis and resolution of complex platform issues.
. Maintain and enhance automation and deployment workflows using Ansible, CI/CD pipelines (e.g. GoCD), and platform-native automation tooling.
. Support Citrix and virtualised platforms such as VMware vSphere and vRealize Automation (vRA).
. Support Windows-based and Linux (RHEL/CentOS/Oracle v8) systems, including patching and configuration management.
. Monitor, maintain, and optimise system health, capacity, and performance using SCOM, Tripwire, and other enterprise monitoring and logging solutions.
. Collaborate with engineering functions to deliver reliable and secure services.
. Ensure systems are maintained in line with security, compliance, and accreditation requirements, supporting audits and vulnerability remediation activities.
. Produce and maintain technical documentation, runbooks, and operational procedures.
. Share knowledge and provide mentorship to junior team members.

Required qualifications to be successful in this role:

Essential Skills & Experience:

. Experience in 2nd/3rd line engineering within secure or Defence environments.
. Strong experience in Windows Server administration within enterprise environments.
. Proficiency in Citrix and VMWare vSphere and vRealize Automation (vRA).
. Experience administering Active Directory environments, including Group Policy, trusts, and delegated administration.
. Experience with MECM (SCCM) or equivalent tooling for Windows patching and lifecycle management.
. Working knowledge of Linux systems (RHEL/Oracle).
. Skilled with monitoring tools such as SCOM.
. Knowledge of Git, Nexus, and CI/CD pipeline tools.
. Knowledge of Jumpboxes, AutoFS, and log rotation.
. Ability to communicate effectively with service owners, architects, and security stakeholders during incident and change activities.

Desirable Skills:

. Experience with Galaxy, Foreman/Katello, or GoCD (or alternatives).
. Familiarity with Trend, Nessus, or other security scanning tools.
. Knowledge of firewall administration.
. Knowledge of Ansible for automation or similar tools.
. Knowledge of enterprise backup, restore and disaster recovery solutions.
. Awareness of trust relationships and secure enterprise architectures.

Skills:

1. Active Directory
2. Citrix Netscaler
3. Linux

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