PSR Rail Team are currently recruiting for a Principal Fire Systems Engineer to work full time in Central London. This will be working for a well established Rail contractor who are working on one of the biggest projects in the UK. Don''t miss out!Fire Detection Systems Design Engineer - Role SummaryThis role focuses on leading the design and construction of Fire Detection and Alarm (FDandA) systems across medium to large infrastructure projects in Rail, Highways, HS2, and Power sectors. It demands technical expertise, stakeholder coordination, compliance assurance, and leadership of junior team members.Key ResponsibilitiesDesign and DeliveryLead the design and design verification of Fire Detection systems.Ensure compliance with BS 5839-1 and client-specific standards (e.g., Network Rail, TfL).Review and manage MEP consultants'' designs for:Safety by designTechnical adequacyConstructability and maintainabilityInterface integrationDocumentation and ComplianceDevelop and author Fire Alarm Cause and Effects documents.Coordinate all third-party system interfaces (e.g., HVAC, BMS, life safety).Ensure design standards meet BRE Global / FM Global accreditation criteria.Manage the LPS1014 F353 form to maintain compliance.Stakeholder CoordinationWork with Engineering Managers, Project Managers, and CREs to ensure design strategy meets cost, quality, and timeline targets.Provide technical responses, lead standardisation efforts, and promote value engineering.Represent the team during m