Senior Estates Engineer Hatfield, Hertfordshire Permanent Monday-Friday - with on call 1-6, would need to be within 1 hour of site. Are you a fully qualified Electrical Engineer looking for a role that combines reactive maintenance, engineering coordination, and project delivery within a complex critical environment? We are seeking a Senior Estates Engineer to join an established facilities team supporting a large, technically advanced site in Hertfordshire. This is not a role focused on routine PPMs. You''ll be responsible for managing reactive maintenance, coordinating engineering activities, leading fault-finding investigations, and delivering improvement projects across the site. A team of engineers carries out the majority of planned preventative maintenance, although there may be occasional requirements to support PPM activities when required. Key Responsibilities Manage and coordinate reactive maintenance across a critical site. Lead technical fault-finding and problem resolution. Coordinate engineers, contractors, and specialist service providers. Oversee electrical systems, HVAC, utilities, and building services infrastructure. Manage maintenance activities through CMMS/SAP systems. Deliver minor works, upgrades, and engineering improvement projects. Review plant performance and identify opportunities for optimisation and energy savings. Conduct inspections, audits, and asset condition assessments. Manage permits-to-work and ensure compliance with Health and ..... full job details .....