To ensure a smooth onboarding process, hire dedicated Power BI developer with access to key resources, such as data sources, documentation, and existing dashboards. Introduce them to relevant team members and set up initial meetings to discuss business objectives and project expectations. Offer training on company-specific tools and processes, and assign a mentor to guide them through the first few weeks. Clearly define their role, responsibilities, and goals, and provide regular feedback to help them adjust. A well-structured onboarding process accelerates their integration into the team and ensures they quickly become productive.