Boutique executive search and leadership advisory firm in the US. Keller Executive Search is a boutique, privately held executive recruitment and advisory firm headquartered in the United States. The company specializes in leadership placement and organizational consulting on a global scale, with tailored, data-driven methodologies, comprehensive assessments, psychometric and background screening, and a strong international network through NPAworldwide. Keller delivers bespoke, high-impact search solutions across industries and also provides CEO succession planning, executive assessments, business culture reviews, employee coaching, and HR advisory services. A 210-day replacement guarantee backs their placements, emphasizing long-term relationships, confidentiality, and results-driven service for business success. The firm employs between 11 and 50 professionals.