Key Account Manager

Key Account Manager – Strategic Enterprise Accounts

Permanent | Reading

We are seeking a senior Key Account Manager to lead the strategic, commercial, and operational success of major enterprise telecoms customers. This role owns complex, high-value accounts end-to-end, driving long-term partnerships, profitable growth, and multi-year account strategies at enterprise scale.

Acting as the senior executive interface, you will build trusted relationships with C-suite stakeholders, lead high-value commercial negotiations (hundreds of millions), hold full P&L accountability, and orchestrate cross-functional teams across Sales, Commercial, Finance, Delivery, Operations, Technology, and Legal to deliver integrated solutions and exceptional service outcomes.

Key Responsibilities

• Deliver sustained, profitable growth across strategic enterprise accounts
• Own forecasting accuracy, commercial performance, and full contract lifecycle management
• Lead complex, high-value commercial negotiations and contractual change
• Identify and realise upsell, cross-sell, and solution expansion opportunities
• Resolve complex commercial and operational escalations
• Build and maintain strong, trusted relationships with senior customer stakeholders

About You

• Extensive experience leading large, complex strategic or enterprise accounts
• Demonstrable P&L ownership and enterprise-level commercial accountability
• Strong commercial acumen, financial literacy, and negotiation expertise
• Proven ability to influence and align cross-functional teams without direct authority
• Confident, credible communicator at C-suite and executive level

This role is ideal for a commercially driven leader who thrives in complex enterprise environments and enjoys shaping long-term, high-value customer partnerships.