The integration of sustainability in project management is becoming essential to navigate the transformation of industries and societies overcoming the technical-environmental trade off in Knowledge Intensive Organizations. Although sustainability is a key driver for long-term orientation and competitive advantage, identifying and operationalizing sustainability-related capabilities in project contexts remains complex. One challenge lies in the identification of skills and practices to understand how sustainability related capabilities can be operationalized in project contexts. This contribution propose a data-driven approach for skills paths design to map relations among skills with a focus on project management and sustainability requirements. This study considers field-specific requirements with over 5,000 PM related job vacancies and Project Management Body of Knowledge (PM-BOK®), and adopts the European Classification of Skills, Competences and Occupation (ESCO). The methodology develops the so-called Prerequisite Discovery approach, that integrates text mining, graph theory, and machine learning, leveraging BERT-based word embeddings and link prediction algorithms, to extract and model skill interdependencies. Results identify 165 PM skills, including five green PM skills, namely environmental engineering, lean manufacturing, energy efficiency, ecosystems, and detecting bottlenecks. By mapping more than 14,000 prerequisite relations and 456 cross domain links the study reveals the current PM-sustainability interplay. Project management competences can act as enablers for green skills, and conversely, how green skills function as foundational prerequisites for sustainability-oriented project practices. While the current PM-sustainability interplay remains predominantly technical, emerging connections with digital, behavioural, decision making, and creative competences suggest the potential for a more holistic integration. The findings therefore indicate that PM green skills can serve as strategic enablers in knowledge creation, sharing, and integration. A framework is proposed to operationalize sustainability by grafting the knowledge cycle onto the green engine of the identified PM green skills. These information can feed adaptive educational and training paths to transform sustainability from a specialized concept into a cross-cutting strategic capability.