9 of 9 Security Hardening Jobs in London

Linux Administrator (DV Security Clearance) Position Description CGI's Space, Defence, and Intelligence business unit is dedicated to delivering cutting-edge technical solutions that address the most complex challenges faced by government agencies. Our mission-critical systems are custom-built to ensure security, reliability, and innovation, helping our clients protect the nation and its people. We are currently … landscape. Our culture values innovation, collaboration, and ownership, making it an ideal environment for self-motivated individuals to thrive. Our roles are only available if you hold a UK Security Clearance and are a sole UK National due to the secure nature of the project. You will either hold a higher level clearance or be willing to obtain it. … Any individual without security clearance is welcome to apply and will always be considered for this or wider opportunities in CGI, where appropriate. This role will require you to work on site in London 5x per week. Your future duties and responsibilities -Diagnosing and solutioning problems with the system in production and non-prod - Increase the efficiency of system More ❯

architecture, management, and deployment of new and existing routing and switching within campus, cloud and data center networks. Lead proper execution of network changes & updates in accordance with corporate security policies to meet business requirements. Responsible for network performance, as well as conformance to security hardening standards and assessment of CVEs. Ability to troubleshoot network-related issues More ❯

architecture, management, and deployment of new and existing routing and switching within campus, cloud and data center networks. Lead proper execution of network changes & updates in accordance with corporate security policies to meet business requirements. Responsible for network performance, as well as conformance to security hardening standards and assessment of CVEs. Ability to troubleshoot network-related issues More ❯

and managing the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities … the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration tests, addressing findings and oversee any remediation work. Improve system monitoring, alerting … system administration experience with at least 3 years in a managerial or team lead role. Strong expertise with RHEL-based systems, including installation, ongoing management, monitoring, performance tuning, system security hardening, etc. Proven track record of managing geographically distributed teams, including senior engineers and tier-1/2 support staff including on-call and rota scheduling. Experience in More ❯

and managing the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities … the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration tests, addressing findings and oversee any remediation work. Improve system monitoring, alerting … system administration experience with at least 3 years in a managerial or team lead role. Strong expertise with RHEL-based systems, including installation, ongoing management, monitoring, performance tuning, system security hardening, etc. Proven track record of managing geographically distributed teams, including senior engineers and tier-1/2 support staff including on-call and rota scheduling. Experience in More ❯

IaC) principles. This senior position offers the opportunity to influence a broad range of infrastructure domains, including: Networking & Exchange Connectivity Linux Systems & Kubernetes Administration Microservice Orchestration & Observability Disaster Recovery & Security Hardening SKILLS & EXPERIENCE REQUIRED: Containers & Orchestration: Deep knowledge of Kubernetes and container security. Experience in managing global or multi-cluster deployments is highly valued. Distributed Systems & Messaging: Strong More ❯

SMTP, DNS, HTTP, Radius. Detailed knowledge of monitoring applications such as zabbix, nagios, icinga, SolarWinds, OpManager and others. Detailed knowledge of server and storage hardware. Detailed knowledge of server security hardening. Detailed knowledge of server virtualization (hypervisor). Facility Management, Network Cabling, Equipment Installation. Knowledge and proficiency in Excel, Word, PowerPoint, Visio and Microsoft Outlook. Strong time management/ More ❯

SMTP, DNS, HTTP, Radius. Detailed knowledge of monitoring applications such as zabbix, nagios, icinga, SolarWinds, OpManager and others. Detailed knowledge of server and storage hardware. Detailed knowledge of server security hardening. Detailed knowledge of server virtualization (hypervisor). Facility Management, Network Cabling, Equipment Installation. Knowledge and proficiency in Excel, Word, PowerPoint, Visio and Microsoft Outlook. Strong time management/ More ❯

SMTP, DNS, HTTP, Radius. Detailed knowledge of monitoring applications such as zabbix, nagios, icinga, SolarWinds, OpManager and others. Detailed knowledge of server and storage hardware. Detailed knowledge of server security hardening. Detailed knowledge of server virtualization (hypervisor). Facility Management, Network Cabling, Equipment Installation. We regret to inform applicants that only shortlisted candidates will be notified. Thank you for More ❯