We are seeking a Professional Services Senior Project Manager to lead, control, and manage Professional Services projects from initiation through delivery for complex client engagements. This role involves building and managing relationships with key stakeholders (customer, supplier, and internal Rackspace teams), maintaining commercial responsibility for the project, and identifying new opportunities to address business problems. The Senior Project Manager will unite and direct internal and external technical and non-technical teams to ensure all targets and requirements are met, delivering projects on schedule and within budget. Key responsibilities include gathering and documenting requirements, managing project profitability and revenue, effectively managing resources, building cross-functional networks, contributing to methodology refinement, and providing excellent customer experience. The role also involves pre-sales engagement, including proposal and Statement of Work (SoW) creation, and negotiation with customers or partners.