About Fastr: Fastr empowers global brands and retailers to move at the speed of change, do more with less, and grow their businesses. Fastr is the only AI-first Digital Experience Platform (DXP) that unifies insight and execution into one AI-native platform — so commerce teams can launch, test, personalize, and optimize every experience without developers or tech bloat. Our products power day-to-day execution and optimization. Our services accelerate adoption, outcomes, and scale. Global brands like GE, Toys R Us, Weber, Carhartt and New Balance trust Fastr to eliminate bottlenecks and sell more. The Opportunity We are looking for a Senior Customer Success Manager who operates at the intersection of customer success and strategic account management. You will own a portfolio of Fastr's most strategic e-commerce customers end-to-end — from post-sale onboarding through renewal, expansion, and executive-level relationship management. This is a commercial, quota-carrying role. You will be accountable for net revenue retention (NRR), gross retention, and expansion ARR within your book of business. You will run renewals, lead commercial negotiations, identify and close upsell/cross-sell opportunities, and build multi-year strategic account plans that align Fastr's roadmap to each customer's e-commerce goals. You will work closely with Product, Engineering, Solutions, Marketing, and Sales to ensure every customer in your portfolio is achieving measurable business outcomes — and is positioned to grow with Fastr year over year. Key Responsibilities Renewals accurately forecast upsell bookings in the CRM on a weekly and quarterly cadence. Identify referenceable growth stories within your book and convert them into case studies, advocacy, and new-logo pipeline referrals. Commercial Negotiation Lead commercial negotiations on renewals, expansions, multi-year agreements, and mid-term amendments — including pricing, discounting, term length, and contractual protections. Partner with Legal, Finance, Deal Desk, and RevOps to structure deals that protect margin, reduce churn risk, and maximize lifetime value. Own pricing conversations with confidence: articulate value in dollars, defend list pricing, and use data (GMV, conversion lift, cost savings, operational ROI) to justify Fastr's commercial terms. Navigate procurement, vendor management, and executive approval processes typical of mid-market and enterprise retailers. Strategic Account Planning Build and maintain detailed strategic account plans for every top-tier customer, including commercial goals, stakeholder maps, whitespace analysis, success metrics, and 12-24 month expansion roadmaps. Run quarterly and annual Executive Business Reviews (EBRs) with C-level and VP-level stakeholders on the customer side — Heads of E-commerce, Digital, IT, and Revenue. Map Fastr's value to the customer's KPIs (conversion rate, AOV, time-to-publish, core web vitals, revenue per session) and track measurable outcomes against those targets. Coordinate cross-functional account teams (Sales, Solutions Architecture, Support, Product) to execute against the account plan. Customer Relationship
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