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Fastr

Senior Customer Success Manager

Fastr

Senior Customer Success Manager at Fastr managing strategic e-commerce accounts. Driving renewals and expansions while ensuring customer satisfaction and measurable outcomes.

Posted 5/2/2026full-timeRemote • Massachusetts • 🇺🇸 United StatesSeniorWebsite

About the role

Key responsibilities & impact
  • Own the full renewal lifecycle for a portfolio of strategic e-commerce customers, including forecasting, negotiation strategy, and close.
  • Drive gross retention and net revenue retention (NRR) targets, with clear accountability for on-time renewals and minimized churn/downsell.
  • Proactively identify at-risk accounts, build mitigation plans, and mobilize internal resources (Product, Engineering, Executive Sponsors) to resolve escalations before they impact renewal outcomes.
  • Carry an expansion quota and own the full expansion cycle — from opportunity identification through commercial close — across additional modules, users, storefronts, regions, and premium service tiers.
  • 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.
  • Serve as the trusted advisor and primary commercial point of contact for your customers — the person their executives call first.

Requirements

What you’ll need
  • 5-8 years of customer-facing experience in Customer Success, Account Management, or a hybrid CSM/AM role at a B2B SaaS company.
  • Proven commercial track record — demonstrable ownership of renewal and expansion quota, with consistent attainment of NRR / GRR / expansion ARR targets.
  • E-commerce technology experience — previous experience working within ecommerce or retail technology.
  • Commercial negotiation skills — experience running multi-year renewals, price increases, discount structures, and enterprise procurement cycles.
  • Strategic account planning rigor — comfort building joint success plans, stakeholder maps, whitespace analyses, and EBR narratives for enterprise customers.
  • Executive presence — able to hold the room with VP- and C-level retail/digital executives and translate technical roadmaps into business impact.
  • Strong analytical instincts : You can read account data, identify patterns, and build a point of view from it.

Benefits

Comp & perks
  • Health insurance
  • 401(k) matching
  • Paid time off
  • Remote work options

ATS Keywords

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Hard Skills & Tools
customer successaccount managementrenewal lifecyclenegotiation strategyretention targetsexpansion quotastrategic account planninganalytical skillse-commerce technologycommercial negotiation
Soft Skills
executive presencecommunicationproblem-solvingrelationship buildingstrategic thinkingstakeholder managementadaptabilitycollaborationinfluencingtrust building