Senior Security Engineer

Salary: £60,000 - 70,000 per year

Requirements

• Eligible for DV clearance
• Experience in several of the following areas: VMware vSphere, Windows Server, Red Hat Enterprise Linux (RHEL), Active Directory, DNS, Group Policy (GPO), Remote Desktop Services (RDS)
• Experience in security technologies such as Trellix / McAfee, SIEM platforms, syslog reporting and integration, antivirus technologies, TLS certificates, PKI concepts, and secure gateway technologies
• Linux administration and scripting skills, including shell scripting and regular expressions (Regex)
• Firewall configuration and management experience
• Experience with LDAP directory services, LDIF, email protocols and standards, and chat/messaging technologies (XMPP desirable)
• Experience with XML, JSON schema, file format validation and analysis, and web protocols
• A background in infrastructure, security, systems, or application engineering, with interest in developing further into architecture

Responsibilities

• Support the design, implementation, and ongoing enhancement of secure gateway solutions
• Produce technical designs and documentation for customer-driven change requests
• Work closely with Solution Architects, Engineering Leads, and operational support teams
• Support service availability, resilience, and security improvements
• Troubleshoot complex infrastructure and application issues
• Assist SOC and 3rd Line teams with incident investigation and resolution
• Manage and maintain directory services, messaging systems, and gateway technologies
• Create scripts and automation to improve operational efficiency
• Support the full change lifecycle from design through deployment and support

Technologies

• Active Directory
• Firewall
• Support
• JSON
• LDAP
• Linux
• RHEL
• Security
• VMware
• Web
• Windows
• XML

More

We are recruiting for a Senior Security Engineer to join a specialist cyber security programme supporting a highly secure and business-critical environment. This is an onsite role based in Bracknell and the South, with a benefits package offered. You will join a collaborative team of architects, engineers, and support specialists delivering secure gateway technologies and associated infrastructure services. This is a hands-on technical role suited to someone looking to grow further into architecture.

last updated 30 week of 2026