• Define and execute Customer Success strategy for Tier 1 and National accounts • Drive measurable customer business outcomes including subscriber growth, retention, ARPU expansion, CSAT, and operational efficiency • Accelerate adoption and operationalization of Calix One platform capabilities • Serve as a trusted strategic advisor to C-suite and executive customer stakeholders • Partner with sales leadership on strategic account planning, white space analysis, and expansion opportunities. • Lead quarterly business reviews with executive sponsors, demonstrating business value and ROI. • Partner with Sales to drive expansion, renewal strength, and long-term value realization • Translate customer business priorities into scalable Success plays and engagement models • Expand adoption of subscription and platform across strategic accounts • Build and scale segment-specific Success motions tailored to Tier 1 complexity and operating models. • Attract, develop, and retain high-performing global teams • Build future-ready talent through career pathing, skills development, and leadership coaching • Foster a culture of accountability, customer obsession, innovation, and measurable impact • Operate with agility and decisiveness, even in ambiguous or rapidly changing environments. • Build trust and credibility by consistently operating in alignment with Calix core values. • Cultivate trusted relationships with senior customer executives and aligning success delivery to their strategic KPIs. • Advocate for the voice of the customer at the Calix leadership level, influencing product, strategy, and operations • Shape go-to-market strategy for strategic accounts and national programs • Represent Calix at industry events, executive briefings, and thought leadership forums.