Field Service Engineer (Fire Building Automation) (w/m/d)

Provide on-site technical service and remote support for fire alarm, voice alarm systems, and safety lighting. Perform commissioning, maintenance, inspections, repairs, and system tests, diagnosing and resolving complex technical faults. Support customers, installers, and service partners via phone, email, or remote access, including escalation handling and root-cause analysis. Build long-term customer relationships, deliver technical trainings, maintain service documentation, and collaborate with Engineering, Product Management, Sales, and Quality.