The Principal Engineer serves as a senior technical leader responsible for the strategic direction, technical excellence, and successful delivery of geotechnical engineering services. This role provides oversight of complex projects, develops and maintains key client relationships, mentors engineering staff, and ensures compliance with applicable regulations, industry standards, and professional engineering practices. The Principal Engineer functions as a trusted advisor to clients, project teams, and company leadership, supporting business growth while maintaining the highest standards of safety, quality, and technical performance. The position includes interacting with multidisciplinary teams in the planning, investigation, analysis, design, and construction support of public and private infrastructure, transportation, energy, and other commercial projects.