The Customer Success Manager is key in driving strategic customer success. You'll foster long-term relationships through business reviews, issue resolution, and cross-functional collaboration to maximize customer satisfaction and revenue growth. Responsibilities include strategic account management by developing account plans, onboarding, and owning the full lifecycle, identifying upsell opportunities, and maintaining weekly updates. You'll also be a customer advocate, resolving escalated issues and conducting quarterly business reviews to address challenges and propose new products. Performance will be measured by proactive meetings, HubSpot documentation, and increasing B2B revenue and margin. You will implement churn reduction strategies, analyze churn targets, and create mutual success plans.