• Serve as the Account Success Leader and trusted executive point of contact for assigned CSP accounts, from post-sale through onboarding, transformation, renewals, and expansion. • Develop and execute joint account success plans in partnership with Sales, aligning customer business objectives with Calix solutions and success programs. • Orchestrate the end-to-end customer lifecycle, ensuring alignment across internal teams and consistent delivery of value. • Guide customers through their business and operational transformation journey, leveraging consultative expertise to influence strategy, priorities, and adoption. • Champion a value-based approach to Customer Success, defining success metrics, KPIs, and ROI tied to customer outcomes. • Monitor customer health, utilization trends, and risk signals; proactively lead mitigation plans and drive timely resolution of escalations. • Build and sustain strong relationships with customer executives and sponsors, strengthening Calix’s role as a strategic partner. • Co-deliver Quarterly Success Reviews (QSRs) and executive briefings that highlight outcomes, impact, and success stories. • Drive renewals, retention, and expansion by anticipating customer needs and identifying upsell and cross-sell opportunities. • Capture and qualify growth opportunities, partnering with Sales to support pipeline development and deal execution. • Advocate for customer needs internally to influence roadmap alignment and solution evolution. • Collaborate in a matrixed environment with Sales, Product, Marketing, Support, Business Insights, and Services teams. • Provide program-level oversight for key initiatives, including planning, execution, timelines, and stakeholder communication.