Hiring a Functional Architect developer is beneficial as they bridge the gap between the technical team and business stakeholders. They understand both the functional requirements and how to implement them technically. They ensure the software solution aligns with business goals and strategies. Their expertise in system design and architecture is crucial for creating efficient, scalable, and maintainable systems. They also help in identifying and mitigating technical risks, ensuring a smoother project execution. Their role is critical in making informed decisions that impact the overall system functionality and user experience.