Key Account Manager - Data Centres / UPS Systems Location: Field-based (UK-wide, with head office in Hertfordshire)Salary: Competitive + Bonus + Car Allowance + Benefits Are you an experienced Key Account Manager or Sales professional with a background in UPS systems, power electronics, or data centre infrastructure? An established global technology business is seeking a Key Account Manager to join their growing power and data centre solutions division. This is an excellent opportunity to manage a substantial portfolio of existing customers across the UK and Europe, providing strategic account management, technical support, and commercial leadership across mission-critical markets. As Key Account Manager - Data Centres / UPS Systems, you will: Take full ownership of a large portfolio of existing customers within the data centre and critical power sectors.Maintain and strengthen long-term relationships with major accounts, ensuring a high level of customer satisfaction and retention.Identify new opportunities for growth within existing customers by introducing additional products and services such as UPS systems, cooling solutions, PDUs, and data racks.Work closely with internal engineering, technical, and service teams to ensure seamless delivery of complex projects and system upgrades.Understand each client''s operational requirements, providing tailored technical and commercial solutions that add value.Prepare account development plans, forecasts, and performance reports to