Siena AI AI Jobs & Careers

Siena AI is the first autonomous customer service platform purpose-built for commerce, combining human empathy with advanced large language model automation to transform how brands engage with their customers. Founded in 2022 by Lisa Popovici and Andrei Negrau, Siena's platform handles over 80% of daily customer interactions across email, text, social media direct messages, and comments in more than 100 languages, achieving a 99.7% alignment score with brand voice and tone. At the heart of Siena's technology is its cognitive reasoning-based engine (CORE), which intelligently evaluates the best resolution path for complex customer service problems. The platform's AI Personas feature allows merchants to create distinct brand voices -- one persona for social media engagement and another for professional email communications -- ensuring every touchpoint feels authentic and on-brand. Client Simple Modern achieved a 98% customer satisfaction rating and an 80% automation rate within just 60 days of implementation. Backed by Sierra Ventures, Village Global, and other investors, Siena is trusted by leading consumer brands including HexClad, Kitsch, K18, MUD/WTR, and Simple Modern. For those passionate about the intersection of AI and customer experience, Siena offers the opportunity to shape the future of autonomous commerce at a fast-growing startup redefining what empathic AI can achieve.