Throughout his career, Leffler has delivered consulting services including project management, design, value engineering and structural system selection to a diverse, national client base. As a principal of The Leffler Group, he is in charge of overall project administration from pre-design through the construction phase.

His experience covers project types ranging from golf clubhouses, office buildings, and residential campuses, to educational, industrial, and correctional projects. Leffler delivers results through his personal involvement and oversight on each project.