Damien Cassaigne

Founder

Cassaigne Consulting

• Launched 1st March 2025!
• Business Strategy
• Change Management
• Deal Negotiation
• Leadership.

General Manager

AT&T

• Drove strategic business change
• Turned P&L to green through cost and revenue actions
• Developed CxO-level client relationships
• Secured $270M+ TCV wins in telecom solutions
• Led teams of 250–350 FTE for global delivery.

Sales Centre VP

AT&T

• Closed $600M+ in TCV through IBM partnerships
• Generated $150M+ in annual enterprise revenue
• Optimised joint GTM strategy with IBM Europe
• Drove consultative selling and innovation-led deals
• Negotiated high-value contracts.

Director / Executive Director

AT&T

• Core team member on $1.6Bn outsourcing contract
• Full outsourcing lifecycle from solution to execution
• Ensured $365M+ annual outsourcing revenue
• solution and contracting
• Negotiated complex contracts for success.

Project Manager / Executive

IBM

• Led international projects with cross-border teams
• Client Project Executive for enterprise accounts
• Applied PMI-certified methods to improve efficiency
• Oversaw infrastructure projects to delivery.

Consultant

Department of Health UK

• Delivered freelance consulting for project management.
• London-based
• UK public sector
• Developed and deployed PRINCE methodology.